Introduced Version SENATE BILL No. 451 _____ DIGEST OF INTRODUCED BILL Citations Affected: IC 6-3. Synopsis: Income tax rate. Provides for a decrease in the individual adjusted gross income tax rate beginning in 2029 depending on certain conditions being met. Effective: July 1, 2025. Holdman January 13, 2025, read first time and referred to Committee on Tax and Fiscal Policy. 2025 IN 451—LS 6727/DI 120 Introduced First Regular Session of the 124th General Assembly (2025) PRINTING CODE. Amendments: Whenever an existing statute (or a section of the Indiana Constitution) is being amended, the text of the existing provision will appear in this style type, additions will appear in this style type, and deletions will appear in this style type. Additions: Whenever a new statutory provision is being enacted (or a new constitutional provision adopted), the text of the new provision will appear in this style type. Also, the word NEW will appear in that style type in the introductory clause of each SECTION that adds a new provision to the Indiana Code or the Indiana Constitution. Conflict reconciliation: Text in a statute in this style type or this style type reconciles conflicts between statutes enacted by the 2024 Regular Session of the General Assembly. SENATE BILL No. 451 A BILL FOR AN ACT to amend the Indiana Code concerning taxation. Be it enacted by the General Assembly of the State of Indiana: 1 SECTION 1. IC 6-3-2-1, AS AMENDED BY P.L.201-2023, 2 SECTION 95, IS AMENDED TO READ AS FOLLOWS [EFFECTIVE 3 JULY 1, 2025]: Sec. 1. (a) As used in this section, "state fiscal year" 4 means the annual period commencing July 1 of a given year and 5 ending June 30 of the following year. 6 (b) Each taxable year, a tax at the following rate of adjusted gross 7 income is imposed upon the adjusted gross income of every resident 8 person, and on that part of the adjusted gross income derived from 9 sources within Indiana of every nonresident person: 10 (1) For taxable years beginning before January 1, 2015, three and 11 four-tenths percent (3.4%). 12 (2) For taxable years beginning after December 31, 2014, and 13 before January 1, 2017, three and three-tenths percent (3.3%). 14 (3) For taxable years beginning after December 31, 2016, and 15 before January 1, 2023, three and twenty-three hundredths percent 16 (3.23%). 17 (4) For taxable years beginning after December 31, 2022, and 2025 IN 451—LS 6727/DI 120 2 1 before January 1, 2024, three and fifteen hundredths percent 2 (3.15%). 3 (5) For taxable years beginning after December 31, 2023, and 4 before January 1, 2025, three and five-hundredths percent 5 (3.05%). 6 (6) For taxable years beginning after December 31, 2024, and 7 before January 1, 2026, three percent (3%). 8 (7) For taxable years beginning after December 31, 2025, and 9 before January 1, 2027, two and ninety-five hundredths percent 10 (2.95%). 11 (8) For taxable years beginning after December 31, 2026, and 12 before January 1, 2029, two and nine-tenths percent (2.9%). 13 (9) For taxable years beginning after December 31, 2028, if 14 the actual amount of forecasted state general fund revenue 15 collections for the state fiscal year ending June 30, 2028, and 16 for state fiscal years ending June 30 of each even-numbered 17 year thereafter, exceed by at least three percent (3%) the 18 amount of forecasted state general fund revenue collections 19 for the state fiscal year ending June 30 of the immediately 20 preceding state fiscal year, as determined by the budget 21 agency under subsection (e), the tax rate shall be decreased by 22 the following percentage point: 23 (A) Five one-hundredths of one percent (0.05%) beginning 24 January 1 of the year immediately succeeding the year of 25 the budget agency determination under subsection (e). 26 (B) Five one-hundredths of one percent (0.05%) beginning 27 January 1 of the year next succeeding the year referenced 28 in clause (A). 29 (b) (c) Except as provided in section 1.5 of this chapter (before its 30 expiration), each taxable year, a tax at the following rate of adjusted 31 gross income is imposed on that part of the adjusted gross income 32 derived from sources within Indiana of every corporation: 33 (1) Before July 1, 2012, eight and five-tenths percent (8.5%). 34 (2) After June 30, 2012, and before July 1, 2013, eight percent 35 (8.0%). 36 (3) After June 30, 2013, and before July 1, 2014, seven and 37 five-tenths percent (7.5%). 38 (4) After June 30, 2014, and before July 1, 2015, seven percent 39 (7.0%). 40 (5) After June 30, 2015, and before July 1, 2016, six and 41 five-tenths percent (6.5%). 42 (6) After June 30, 2016, and before July 1, 2017, six and 2025 IN 451—LS 6727/DI 120 3 1 twenty-five hundredths percent (6.25%). 2 (7) After June 30, 2017, and before July 1, 2018, six percent 3 (6.0%). 4 (8) After June 30, 2018, and before July 1, 2019, five and 5 seventy-five hundredths percent (5.75%). 6 (9) After June 30, 2019, and before July 1, 2020, five and 7 five-tenths percent (5.5%). 8 (10) After June 30, 2020, and before July 1, 2021, five and 9 twenty-five hundredths percent (5.25%). 10 (11) After June 30, 2021, four and nine-tenths percent (4.9%). 11 (c) (d) If for any taxable year a taxpayer is subject to different tax 12 rates under subsection (b), (c), the taxpayer's tax rate for that taxable 13 year is the rate determined in the last STEP of the following STEPS: 14 STEP ONE: Multiply the number of days in the taxpayer's taxable 15 year that precede the day the rate changed by the rate in effect 16 before the rate change. 17 STEP TWO: Multiply the number of days in the taxpayer's 18 taxable year that follow the day before the rate changed by the 19 rate in effect after the rate change. 20 STEP THREE: Divide the sum of the amounts determined under 21 STEPS ONE and TWO by the number of days in the taxpayer's 22 tax period. 23 However, the rate determined under this subsection shall be rounded 24 to the nearest one-hundredth of one percent (0.01%). 25 (e) This subsection applies beginning in 2028, and applies in 26 each even-numbered year thereafter. After the end of each 27 even-numbered state fiscal year, the budget agency shall calculate 28 and determine the percentage of revenue growth in the actual 29 amount of forecasted state general fund revenue collections 30 compared to the immediately preceding odd-numbered state fiscal 31 year for purposes of determining whether the tax rate will decrease 32 for a taxable year under subsection (b)(9). The budget agency shall 33 make the calculation not later than thirty (30) days after the end of 34 each even-numbered state fiscal year. Not later than September 1 35 of each even-numbered year, the budget agency shall certify the 36 results to the department and report to the budget committee for 37 review the following: 38 (1) The percentage of revenue growth determined under this 39 subsection. 40 (2) The adjusted gross income tax rate determination made 41 for each applicable year under this subsection. 42 Not later than November 1 of each even-numbered year, the 2025 IN 451—LS 6727/DI 120 4 1 department shall provide notice of the determination and the 2 applicable tax rates for each year under subsection (b)(9)(A) and 3 (b)(9)(B) on the department's website in a departmental notice. 4 SECTION 2. IC 6-3-2-1.7, AS ADDED BY P.L.137-2022, 5 SECTION 34, IS AMENDED TO READ AS FOLLOWS [EFFECTIVE 6 JULY 1, 2025]: Sec. 1.7. (a) For purposes of this section: 7 (1) "Distributor" means a person or entity located in this state that 8 purchases tangible personal property from an eligible corporation 9 for purposes of resale. For purposes of this section, a distributor 10 is not a person or entity that has a relationship described in 11 Section 267(b) of the Internal Revenue Code with the eligible 12 corporation. 13 (2) "Eligible corporation" means a corporation otherwise subject 14 to tax under section 1(b) 1(c) of this chapter. An eligible 15 corporation shall not include a corporation described in section 16 2.8(2) of this chapter or a corporation subject to tax under 17 IC 6-5.5. 18 (3) "Qualifying distribution sale" means a sale of tangible 19 personal property by an eligible corporation to a distributor that: 20 (A) is a purchase for resale by the distributor as defined in 21 IC 6-2.5-5-8; and 22 (B) for which the sourcing of the sale of the property to an 23 ultimate customer outside Indiana is agreed to by the 24 department and the eligible corporation, or, in the absence of 25 an agreement, sourced by the ratio of the population of Indiana 26 compared to the population of all states in which the qualified 27 distribution sales are sold to an ultimate customer. 28 For purposes of this section, a qualifying distribution sale shall 29 not include any sale for which the distributor does not issue an 30 exemption certificate in the manner provided by the department 31 under IC 6-2.5-8-8 or a purchase by the distributor for the 32 distributor's own use other than for resale. A qualifying 33 distribution sale shall not include any sale made by a pass through 34 entity that would otherwise be attributable under this article to the 35 eligible corporation. 36 (4) "Ultimate customer" means a purchaser of tangible personal 37 property who purchases the tangible personal property without an 38 intent of future resale of property. 39 (b) If an eligible corporation has greater than one billion dollars 40 ($1,000,000,000) of tangible personal property sales that otherwise 41 would be sourced to this state under section 2(e) of this chapter, and 42 would have an apportionment percentage under section 2 of this 2025 IN 451—LS 6727/DI 120 5 1 chapter of greater than ten percent (10%) prior to application of this 2 section the eligible corporation may elect to determine its tax as 3 follows: 4 STEP ONE: Determine the apportionment percentage under 5 sections 2 and 2.2 of this chapter, treating qualifying distribution 6 sales as if they were not receipts for purposes of the 7 apportionment numerator, but treating the portion where the 8 ultimate customer would be located in Indiana as part of the 9 receipts numerator. 10 STEP TWO: Determine Indiana adjusted gross income in the 11 manner otherwise provided in this article, applying the 12 apportionment percentage in STEP ONE. For purposes of this 13 STEP, any adjusted gross income arising from qualified 14 distribution sales shall be treated as business income of the 15 eligible corporation. 16 STEP THREE: Determine the tax due under this chapter on the 17 amount computed in STEP TWO, reduced by any nonrefundable 18 credits under IC 6-3-3 or IC 6-3.1, but not less than zero (0). For 19 purposes of this article, any application of a credit under this 20 STEP shall reduce the amount available for carryforward in the 21 same manner as otherwise provided under IC 6-3-3 or IC 6-3.1. 22 STEP FOUR: 23 (A) If the eligible corporation's qualified distribution sales are 24 not in excess of two billion dollars ($2,000,000,000), 25 determine one-half of one percent (0.5%) of the qualified 26 distribution sales. 27 (B) If the eligible corporation's qualified distribution sales are 28 in excess of two billion dollars ($2,000,000,000) but not in 29 excess of three billion dollars ($3,000,000,000), determine 30 three-eighths of one percent (0.375%) of the qualified 31 distribution sales in excess of two billion dollars 32 ($2,000,000,000) plus ten million dollars ($10,000,000). 33 (C) If the eligible corporation's qualified distribution sales are 34 in excess of three billion dollars ($3,000,000,000) but not in 35 excess of four billion dollars ($4,000,000,000), determine 36 one-fourth of one percent (0.25%) of the qualified distribution 37 sales in excess of three billion dollars ($3,000,000,000) plus 38 thirteen million seven hundred fifty thousand dollars 39 ($13,750,000). 40 (D) If the eligible corporation's qualified distribution sales are 41 in excess of four billion dollars ($4,000,000,000), determine 42 one-eighth of one percent (0.125%) of the qualified 2025 IN 451—LS 6727/DI 120 6 1 distribution sales in excess of four billion dollars 2 ($4,000,000,000) plus sixteen million two hundred fifty 3 thousand dollars ($16,250,000). 4 STEP FIVE: Add the amounts determined under STEP THREE 5 and STEP FOUR. 6 (c) Notwithstanding any other provision of this section, for an 7 eligible corporation that makes an election: 8 (1) if the tax for a taxable year covered by the election as 9 computed under subsection (b) is less than twenty-six million 10 dollars ($26,000,000), the tax shall be twenty-six million dollars 11 ($26,000,000); and 12 (2) if the tax for the taxable year covered by an election as 13 computed under subsection (b) is greater than the amount 14 specified in clauses (A) through (C), the amount of tax shall be 15 the following amounts: 16 (A) For a taxable year ending after December 31, 2018, and 17 before January 1, 2025, forty million dollars ($40,000,000). 18 (B) For a taxable year ending after December 31, 2024, and 19 before January 1, 2026, forty-two million dollars 20 ($42,000,000). 21 (C) For each taxable year ending after December 31, 2025, 22 forty-two million dollars ($42,000,000) plus one million 23 dollars ($1,000,000) for each taxable year ending after 24 December 31, 2025. 25 For purposes of this subsection, the tax for a taxable year under this 26 section shall be determined after application of any credit allowable 27 under IC 6-3-3 and IC 6-3.1. 28 (d) If an eligible corporation makes an election under this section, 29 the following apply: 30 (1) The eligible corporation shall be subject to the election for the 31 taxable year of the election and each taxable year thereafter until 32 the first taxable year ending ten (10) years after the first year in 33 which an election is made under this section, even if the 34 corporation would not be an eligible corporation for a taxable year 35 after the taxable year in which the election is made, and shall be 36 binding on any successor corporation or group of corporations to 37 the eligible corporation. 38 (2) After the period of the initial election under subdivision (1), 39 the department may permit a taxpayer to make an election under 40 this section for each subsequent taxable year after the election 41 expires under subdivision (1). However: 42 (A) an election under this subdivision is only permitted for one 2025 IN 451—LS 6727/DI 120 7 1 (1) taxable year; and 2 (B) if an eligible corporation does make an election for a 3 taxable year, the eligible corporation may only make a new 4 election if the new election is subject to the terms of 5 subdivision (1). 6 (e) If two (2) or more eligible corporations are part of a consolidated 7 return or combined return, the computation under STEP FOUR of 8 subsection (b) shall be determined separately for each corporation. 9 (f) For purposes of computing net operating losses for the taxable 10 year under section 2.6 of this chapter and the deduction allowable 11 against adjusted gross income under section 2.6 of this chapter, the loss 12 for the taxable year or deduction allowable shall be computed pursuant 13 to STEP TWO of subsection (b). 14 (g) An election under this section shall be in the form and manner 15 prescribed by the department. The election must be completed and filed 16 with the department on or before the date of filing of the original return 17 for a taxable year to be effective beginning with that taxable year. In 18 addition, if an eligible corporation files a consolidated return or 19 combined return for the first taxable year of the election, or for any year 20 subsequent to the first taxable year of the election, the eligible 21 corporation and the department shall enter into an agreement regarding 22 issues specific to consolidated or combined returns. In the absence of 23 such an agreement, any such issues shall be treated in a manner 24 prescribed by the department and published in the Indiana Register. If 25 the original return for a taxable year is filed after the due date for the 26 original return, including any extensions, an election will not be 27 allowed for that taxable year or any subsequent year to which the 28 election otherwise would apply. However, the eligible corporation may 29 file an election for subsequent taxable years, provided the eligible 30 corporation otherwise meets the requirements of this section. 31 SECTION 3. IC 6-3-4.5-1, AS AMENDED BY P.L.9-2024, 32 SECTION 186, IS AMENDED TO READ AS FOLLOWS 33 [EFFECTIVE JULY 1, 2025]: Sec. 1. The following definitions apply 34 throughout this chapter: 35 (1) "Adjustment year" means the partnership taxable year 36 described in Section 6225(d)(2) of the Internal Revenue Code. 37 (2) "Administrative adjustment request" means an administrative 38 adjustment request filed by a partnership under Section 6227 of 39 the Internal Revenue Code. 40 (3) "Affected year" means any taxable year for a taxpayer that is 41 affected by an adjustment under this chapter, regardless of 42 whether the partnership has received an adjustment for that 2025 IN 451—LS 6727/DI 120 8 1 taxable year. 2 (4) "Audited partnership" means a partnership subject to a 3 partnership level audit resulting in a federal adjustment. 4 (5) "Corporate partner" means a partner that is subject to the state 5 adjusted gross income tax under IC 6-3-2-1(b) IC 6-3-2-1(c) or 6 the financial institutions tax under IC 6-5.5-2-1. In the case of a 7 partner that is a corporation described in IC 6-3-2-2.8(2) that also 8 is subject to tax under IC 6-3-2-1(b), IC 6-3-2-1(c), the 9 corporation is a corporate partner only to the extent that its 10 income is subject to tax under IC 6-3-2-1(b). IC 6-3-2-1(c). 11 (6) "Direct partner" means a partner that holds an interest directly 12 in a partnership or pass through entity. 13 (7) "Exempt partner" means a partner that is exempt from the 14 adjusted gross income tax under IC 6-3-2-2.8(1) or the financial 15 institutions tax under IC 6-5.5-2-7(4), except to the extent of 16 unrelated business taxable income. 17 (8) "Federal adjustment" means a change to an item or amount 18 determined under the Internal Revenue Code or a change to any 19 other tax attribute that is used by a taxpayer to compute state 20 adjusted gross income taxes or financial institutions tax owed, 21 whether that change results from action by the Internal Revenue 22 Service, including a partnership level audit, or the filing of an 23 amended federal return, a federal refund claim, or an 24 administrative adjustment request by the taxpayer. A federal 25 adjustment is positive to the extent that it increases state adjusted 26 gross income as determined under IC 6-3 or IC 6-5.5 and is 27 negative to the extent that it decreases state adjusted gross income 28 as determined under IC 6-3 or IC 6-5.5. 29 (9) "Federal adjustment reports" includes methods or forms 30 required by the department for use by a taxpayer to report final 31 federal adjustments for purposes of this chapter, including an 32 amended Indiana tax return, information return, or uniform 33 multistate report. 34 (10) "Federal partnership representative" means a person the 35 partnership designates for the taxable year as the partnership's 36 representative, or the person the Internal Revenue Service has 37 appointed to act as the federal partnership representative, 38 pursuant to Section 6223(a) of the Internal Revenue Code. 39 (11) "Final determination date" means the following: 40 (A) Except as provided in clause (B) or (C), if the federal 41 adjustment arises from an Internal Revenue Service audit or 42 other action by the Internal Revenue Service, the final 2025 IN 451—LS 6727/DI 120 9 1 determination date is the date on which the federal adjustment 2 is a final determination under IC 6-3-4-6(d). 3 (B) For federal adjustments arising from an Internal Revenue 4 Service audit or other action by the Internal Revenue Service, 5 if the taxpayer filed as a member of a consolidated tax return 6 filed under IC 6-3-4-14, a combined return filed under 7 IC 6-3-2-2 or IC 6-5.5-5-1, or a return combined by the 8 department under IC 6-3-2-2(p), the final determination date 9 means the first date on which no related federal adjustments 10 arising from that audit remain to be finally determined, as 11 described in clause (A), for the entire group. 12 (C) If the federal adjustment results from filing an amended 13 federal return, a federal refund claim, or an administrative 14 adjustment request, the final determination date means the day 15 on which the amended return, refund claim, administrative 16 adjustment request, or other similar report was filed. 17 (12) "Final federal adjustment" means a federal adjustment after 18 the final determination date for that federal adjustment has 19 passed. 20 (13) "Indirect partner" means a partner in a partnership or pass 21 through entity that itself holds an interest directly, or through 22 another indirect partner, in a partnership or pass through entity. 23 (14) "Internal Revenue Code" has the meaning set forth in 24 IC 6-3-1-11. 25 (15) "Nonresident partner" has the meaning provided in 26 IC 6-3-4-12(n). 27 (16) "Partner" means a person or entity that holds an interest 28 directly or indirectly in a partnership or other pass through entity. 29 (17) "Partner level adjustments report" means a report provided 30 by a partnership to its partners as a result of a department action 31 with regard to the partnership. A partner level adjustments report 32 does not include an amended statement provided by a partnership 33 or other entity as a result of an adjustment reported by the 34 partnership. 35 (18) "Partnership" has the meaning set forth in IC 6-3-1-19. 36 (19) "Partnership level audit" means an examination by the 37 Internal Revenue Service at the partnership level under Sections 38 6221 through 6241 of the Internal Revenue Code, as enacted by 39 the Bipartisan Budget Act of 2015, Public Law 114-74, which 40 results in federal adjustments. 41 (20) "Partnership return" means a return required to be filed by a 42 partnership pursuant to IC 6-3-4-10. In the case of a partnership 2025 IN 451—LS 6727/DI 120 10 1 that is required to withhold tax or file a composite return pursuant 2 to IC 6-3-4-12 or IC 6-5.5-2-8, the term also includes the returns 3 or schedules required for tax withholding or composite filing. In 4 the case of a partnership that is an electing entity under 5 IC 6-3-2.1, the term also includes the returns or schedules 6 required for the pass through entity tax under IC 6-3-2.1. 7 (21) "Pass through entity" means an entity defined in IC 6-3-1-35, 8 other than a partnership, that: 9 (A) is not subject to tax except as provided in IC 6-3-2-2.8(2), 10 in the case of a corporation described in IC 6-3-2-2.8(2); or 11 (B) is not subject to tax except on its undistributed taxable 12 income, in the case of an estate or a trust. 13 (22) "Reallocation adjustment" means a federal adjustment 14 resulting from a partnership level audit or an administrative 15 adjustment request that changes the shares of one (1) or more 16 items of partnership income, gain, loss, expense, or credit 17 allocated to direct partners. A positive reallocation adjustment 18 means the portion of a reallocation adjustment that would 19 increase federal adjusted gross income or federal taxable income 20 for one (1) or more direct partners, and a negative reallocation 21 adjustment means the portion of a reallocation adjustment that 22 would decrease federal adjusted gross income or federal taxable 23 income for one (1) or more direct partners, according to Section 24 6225 of the Internal Revenue Code and the regulations under that 25 section. 26 (23) "Resident partner" means a partner that is not a nonresident 27 partner. 28 (24) "Review year" means the taxable year of a partnership that 29 is subject to a partnership level audit, an administrative 30 adjustment request, or an amended federal return that results in 31 federal adjustments, regardless of whether any federal tax 32 determined to be due is the responsibility of the partnership or 33 partners. 34 (25) "Statement" means a form or schedule prescribed by the 35 department through which a partnership or pass through entity 36 reports tax attributes to its owners or beneficiaries. 37 (26) "Tax attribute" means any item of income, deduction, credit, 38 receipts for apportionment, or other amount or status that 39 determines a partner's liability under IC 6-3, IC 6-3.6, or IC 6-5.5. 40 (27) "Taxable year" means, in the case of a partnership, the year 41 or partial year for which a partnership files a return for state and 42 federal purposes and, in the case of a partner, the taxable year in 2025 IN 451—LS 6727/DI 120 11 1 which the partner reports tax attributes from the partnership. 2 (28) "Taxpayer" has the meaning set forth in IC 6-3-1-15 (in the 3 case of the adjusted gross income tax) and IC 6-5.5-1-17 (in the 4 case of the financial institutions tax) and, unless the context 5 clearly indicates otherwise, includes a partnership subject to a 6 partnership level audit or a partnership that has made an 7 administrative adjustment request, as well as a tiered partner of 8 that partnership. 9 (29) "Tiered partner" means any partner that is a partnership or 10 pass through entity. 11 (30) "Unrelated business taxable income" has the meaning set 12 forth in Section 512 of the Internal Revenue Code. 13 SECTION 4. IC 6-3-4.5-9, AS AMENDED BY P.L.9-2024, 14 SECTION 188, IS AMENDED TO READ AS FOLLOWS 15 [EFFECTIVE JULY 1, 2025]: Sec. 9. (a) Partnerships and partners 16 shall report final federal adjustments arising from a partnership level 17 audit or an administrative adjustment request and make payments as 18 required under this section. 19 (b) Final federal adjustments subject to the requirements of this 20 section, except those subject to a properly made election under 21 subsection (c), shall be reported as follows: 22 (1) Not later than the applicable deadline, the partnership shall: 23 (A) file an amended partnership return for the review year and 24 any other taxable year affected by the final federal adjustments 25 with the department as provided in section 8 of this chapter 26 and provide any other information required by the department; 27 (B) notify each of its direct partners of their distributive share 28 of the final federal adjustments as provided in section 8 of this 29 chapter for all affected taxable years for which the partnership 30 filed an amended partnership return by an amended statement 31 or a report in the form and manner prescribed by the 32 department; 33 (C) file an amended composite return for direct partners and 34 an amended withholding return for direct partners for the 35 review year and any affected taxable years as otherwise 36 required by IC 6-3-4-12 or IC 6-5.5-2-8 and pay any tax due 37 for the taxable years; and 38 (D) if the partnership is an electing entity, file an amended 39 return under IC 6-3-2.1 for the review year and any affected 40 taxable year and pay any tax due for the taxable year. 41 (2) Each direct partner that is subject to tax under IC 6-3, 42 IC 6-3.6, or IC 6-5.5 shall, on or before the applicable deadline: 2025 IN 451—LS 6727/DI 120 12 1 (A) file an amended return as provided in section 8 of this 2 chapter reporting their distributive share of the adjustments 3 reported to them under subdivision (1)(B) for the taxable year 4 in which affected taxable year attributes would be reported by 5 the direct partner as provided in section 8 of this chapter; and 6 (B) pay any additional amount of tax due as if final federal 7 partnership adjustments had been properly reported, less any 8 credit for related amounts paid or withheld and remitted on 9 behalf of the direct partner. 10 (3) Each tiered partner shall treat any final federal partnership 11 adjustments under this section in a manner consistent with the 12 treatment of tiered partners under section 8 of this chapter. 13 (c) Except as provided in subsection (d), an audited partnership 14 making an election under this subsection shall: 15 (1) not later than the applicable deadline, file an amended 16 partnership return for the review year and for any other affected 17 taxable year elected by the audited partnership, including 18 information as required by the department, and notify the 19 department that it is making the election under this subsection; 20 and 21 (2) not later than ninety (90) days after the applicable deadline, 22 pay an amount, determined as follows, in lieu of taxes owed by its 23 direct or indirect partners: 24 (A) Exclude from final federal adjustments the distributive 25 share of these adjustments reported to a direct exempt partner 26 that is not unrelated business income. 27 (B) For the total distributive shares of the remaining final 28 federal adjustments reported to direct corporate partners and 29 to direct exempt partners, apportion and allocate such 30 adjustments as provided under IC 6-3-2-2 or IC 6-3-2-2.2 (in 31 the case of the adjusted gross income tax) or IC 6-5.5-4 (in the 32 case of the financial institutions tax), and multiply the 33 resulting amount by the tax rate for the taxable year under 34 IC 6-3-2-1(b), IC 6-3-2-1(c), IC 6-3-2-1.5, or IC 6-5.5-2-1, as 35 applicable. 36 (C) For the total distributive shares of the remaining final 37 federal adjustments reported to nonresident direct partners 38 other than tiered partners or corporate partners, determine the 39 amount of such adjustments which is Indiana source income 40 under IC 6-3-2-2 or IC 6-3-2-2.2, and multiply the resulting 41 amount by the tax rate under IC 6-3-2-1(a), IC 6-3-2-1(b), and 42 if applicable IC 6-3.6. If a partnership is unable to determine 2025 IN 451—LS 6727/DI 120 13 1 whether a nonresident is subject to tax under IC 6-3.6, or to 2 determine in what county the nonresident is subject to tax 3 under IC 6-3.6, tax shall also be imposed at the highest rate for 4 which a county imposes a tax under IC 6-3.6 for the taxable 5 year. 6 (D) For the total distributive shares of the remaining final 7 federal adjustments reported to tiered partners: 8 (i) determine the amount of any adjustment that is of a type 9 that it would be subject to sourcing in Indiana under 10 IC 6-3-2-2, IC 6-3-2-2.2, or IC 6-5.5-4, as applicable, and 11 determine the portion of this amount that would be sourced 12 to Indiana; 13 (ii) determine the amount of any adjustment that is of a type 14 that it would not be subject to sourcing to Indiana by a 15 nonresident partner under IC 6-3-2-2, IC 6-3-2-2.2, or 16 IC 6-5.5-4, as applicable; 17 (iii) determine the portion of the amount determined under 18 item (ii) that can be established, as prescribed by the 19 department by rule under IC 4-22-2, to be properly allocable 20 to nonresident indirect partners or other partners not subject 21 to tax on the adjustments; and 22 (iv) multiply the sum of the amounts determined in items (i) 23 and (ii) reduced by the amount determined in item (iii) by 24 the highest combined rate for the taxable year under 25 IC 6-3-2-1(a) IC 6-3-2-1(b) and IC 6-3.6 for any county, the 26 rate under IC 6-3-2-1(b), IC 6-3-2-1(c), or the rate under 27 6-5.5-2-1 for the taxable year, whichever is highest. 28 (E) For the total distributive shares of the remaining final 29 federal adjustments reported to resident individual, estate, or 30 trust direct partners, multiply that amount by the tax rate under 31 IC 6-3-2-1(a) IC 6-3-2-1(b) and IC 6-3.6. If a partnership does 32 not reasonably ascertain the county of residence for an 33 individual direct partner, the rate under IC 6-3.6 for that 34 partner shall be treated as the highest rate imposed in any 35 county under IC 6-3.6 for the taxable year. 36 (F) Add an amount equal to any credit reduction under 37 IC 6-3-3, IC 6-3.1, and IC 6-5.5 attributable as a result of final 38 federal adjustments. 39 (G) Add the amounts determined in clauses (B), (C), (D)(iv), 40 (E), and (F). For purposes of determining interest and 41 penalties, the due date of payment shall be the due date of the 42 partnership's return under IC 6-3-4-10 for the taxable year, 2025 IN 451—LS 6727/DI 120 14 1 determined without regard to any extensions. 2 (d) Final federal adjustments subject to an election under subsection 3 (c) shall not include: 4 (1) the distributive share of final federal adjustments that would 5 constitute income derived from a partnership to any direct or 6 indirect partner that is a corporation taxable under IC 6-3-2-1(b), 7 IC 6-3-2-1(c), IC 6-3-2-1.5, or IC 6-5.5-2-1 and is considered 8 unitary to the partnership; or 9 (2) any other circumstances that the department determines would 10 result in avoidance or evasion of any tax otherwise due from one 11 (1) or more partners under IC 6-3 or IC 6-5.5. 12 (e) No election under subsection (c) may be made for federal audit 13 adjustments received by the department after April 30, 2023. 14 (f) Notwithstanding IC 6-3-4-11, an audited partnership not 15 otherwise subject to any reporting or payment obligations to Indiana 16 that makes an election under subsection (c) consents to be subject to 17 Indiana law related to reporting, assessment, payment, and collection 18 of Indiana tax calculated under the election. 19 SECTION 5. IC 6-3-4.5-18, AS AMENDED BY P.L.201-2023, 20 SECTION 99, IS AMENDED TO READ AS FOLLOWS [EFFECTIVE 21 JULY 1, 2025]: Sec. 18. (a) If a partnership or tiered partner is required 22 to issue a report, issue an amended statement, or issue other 23 information to a partner, owner, or beneficiary under this chapter, and 24 does not issue such report, statement, or information within the period 25 such issuance is required under this chapter, the partnership or tiered 26 partner shall be liable for any tax that otherwise may be due from the 27 partner, owner, or beneficiary, notwithstanding any other provision in 28 IC 6-3 or IC 6-5.5. The tax rate under this section shall be computed at 29 the highest rate for the taxable year under: 30 (1) IC 6-3-2-1(a), IC 6-3-2-1(b), plus the highest rate imposed in 31 any county under IC 6-3.6; 32 (2) IC 6-3-2-1(b); IC 6-3-2-1(c); or 33 (3) IC 6-5.5-2-1; 34 unless the partnership or tiered partner can establish that a lower rate 35 should apply, the partnership or tiered partner has made an election to 36 be subject to tax under sections 6, 8, or 9 of this chapter, or to the 37 extent the partnership, tiered partner, or the department can determine 38 that the tax was otherwise properly reported and remitted. Such tax 39 shall be considered to be due on the due date of the partnership's or 40 tiered partner's return for the taxable year, determined without regard 41 to extensions. 42 (b) If a partnership or tiered partner issues the report, amended 2025 IN 451—LS 6727/DI 120 15 1 statement, or other information: 2 (1) to an address that the partnership or tiered partner knows or 3 reasonably should know is incorrect; or 4 (2) if the report, amended statement, or other information not 5 described in subdivision (1) is returned and the partnership or 6 tiered partner: 7 (A) fails to take reasonable steps to determine a proper address 8 for reissuance within thirty (30) days after the report, amended 9 statement, or other information is returned; or 10 (B) takes such steps and fails to reissue the report, amended 11 statement, or other information to a proper address within 12 thirty (30) days after the report, amended statement, or other 13 information is returned; 14 such report, amended statement, or other information shall be 15 considered to have not been issued for purposes of this section. 16 (c) The department may issue a proposed assessment under this 17 section not later than three (3) years after the department receives a 18 return or amended return from the partnership or tiered partner for 19 which the partnership or tiered partner fails to issue reports, amended 20 statements, or other information, or from the date a partnership is 21 required to issue partner level adjustments reports to its partners. 22 (d) If: 23 (1) a direct or indirect partner files and remits the tax otherwise 24 due under this section, the assessment to the partnership or tiered 25 partner under this section shall be reduced by the portion of the 26 tax attributable to the direct or indirect partner; and 27 (2) a partnership or tiered partner files and remits the tax under 28 this section, such tax shall be treated as payment of tax to the 29 direct or indirect partners. However, in no event shall the direct 30 or indirect partners be permitted a refund of tax paid by a 31 partnership or tiered partner under this section unless otherwise 32 permitted under this chapter or IC 6-8.1-9-1. 33 (e) Nothing in this section shall be construed to relieve a partnership 34 or tiered partner from any duty to issue a report, amended statement, or 35 other information otherwise required under this chapter or under any 36 other provision of IC 6-3 or IC 6-5.5. If a partnership or tiered partner 37 issues a report, amended statement, or other information provided 38 under this chapter after the date otherwise required for issuance, the 39 department may grant relief to any tiered partner, direct partner, or 40 indirect partner affected by the late issuance, including extension of 41 applicable deadlines. 2025 IN 451—LS 6727/DI 120