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    • California—Corporate Income Tax: FTB May Preserve Organization's State Exempt Status After Federal Revocation
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    • California—Corporate, Personal Income Taxes: Definition of “Eligible Transmission Project” Revised for Tax Credit
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    • California—Multiple Taxes: Low-Income Housing Credit Allocations Restricted
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    • California—Personal Income Tax: Voluntary Return Checkoff for Black Cultural District Established
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    • California—Sales and Use Tax: Exemption Enacted for Infant Formula
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    • California—Sales and Use Tax: San Diego Metropolitan Transit System Allowed to Adopt Transaction and Use Tax Ordinance by Initiative
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    • California—Sales and Use Tax: Short-Term Rental Facilitator Act of 2026 Enacted
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    • Idaho—Personal Income Tax, Practice and Procedure: Publication on How Federal Filing Changes Affect Idaho Returns Revised
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    • Illinois—Sales and Use Tax: Taxation of Craft Growers of Cannabis Discussed
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    • Illinois—Tobacco Tax: Nicotine Pouch Sales To Federal Prisons Are Exempt
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    • Michigan—Multiple Taxes: Interest Rate on Overpayment and Underpayment of Taxes Announced
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    • North Carolina—Sales and Use Tax: Directive Provides Format of Required Report on Tax Paid on Electricity for Use at Certified Datacenter
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    • Texas—Sales and Use Tax: Marketplace And Platform Fees No Longer Taxable
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    State Tax Day - Current, S.11, Michigan—Multiple Taxes: Interest Rate on Overpayment and Underpayment of Taxes Announced, (Oct 2, 2026)

    The interest rate on the underpayment and overpayment of Michigan taxes for the period of January 1, 2027 through June 30, 2027 is 7.77%.

    Revenue Administrative Bulletin 2026-10, Michigan Department of Treasury, September 30, 2026, ¶402-788

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