| (5) |
| (a) | Except as provided in Subsection (5)(c), the commission may not pay interest on an overpayment of a tax, fee, or charge if the overpayment of the tax, fee, or charge is refunded within:
| (i) | 45 days after the last date provided for filing the return:
| (A) | with respect to a tax under Chapter 7, Corporate Franchise and Income Taxes, or Chapter 10, Individual Income Tax Act; and |
| (B) | if the return is filed electronically; or |
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| (ii) | 90 days after the last date provided for filing the return:
| (A) | with respect to a tax, fee, or charge, except for a tax under Chapter 7, Corporate Franchise and Income Taxes, or Chapter 10, Individual Income Tax Act; or |
| (B) | if the return is not filed electronically. |
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| (b) | Except as provided in Subsection (5)(c), if a person files a return after the last date provided for filing the return, interest is not allowed on the overpayment if the overpayment is refunded within:
| (i) | 45 days after the date the return is filed:
| (A) | with respect to a tax under Chapter 7, Corporate Franchise and Income Taxes, or Chapter 10, Individual Income Tax Act; and |
| (B) | if the return is filed electronically; or |
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| (ii) | 90 days after the date the return is filed:
| (A) | with respect to a tax, fee, or charge, except for a tax under Chapter 7, Corporate Franchise and Income Taxes, or Chapter 10, Individual Income Tax Act; or |
| (B) | if the return is not filed electronically. |
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| (c) |
| (i) | Subject to Subsection (5)(c)(ii), for an amended return, the commission shall pay interest on an overpayment for a time period:
| (A) | that begins on the later of the date the original return was filed orthe due date for filing the original return not including any extensions for filing the original return; and |
| (B) | that ends on the date the commission receives the amended return. |
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| (ii) |
| (A) | For interest that accrues on or after January 1, 2026, the maximum amount of interest authorized by Subsection (5)(c)(i) is $100 per calendar year. |
| (B) | Subsection (5)(c)(ii)(A) does not apply to an overpayment provided to a federally recognized tribe or an overpayment resulting from commission error. |
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| (iii) | For an amended return filed electronically with respect to a tax under Chapter 7, Corporate Franchise and Income Taxes, or Chapter 10, Individual Income Tax Act, the commission shall pay interest on an overpayment if the commission does not process a refund of the overpayment within a 45-day period after the date the commission receives the amended return, for a time period:
| (A) | that begins 46 days after the commission receives the amended return; and |
| (B) | that ends on the date that the commission completes processing the refund of the overpayment. |
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| (iv) | For an amended return not filed electronically or with respect to any tax, fee, or charge not described in Subsection (5)(c)(iii), the commission shall pay interest on an overpayment if the commission does not process a refund of the overpayment within a 90-day period after the date the commission receives the amended return, for a time period:
| (A) | that begins 91 days after the commission receives the amended return; and |
| (B) | that ends on the date that the commission completes processing the refund of the overpayment. |
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