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    • California—Corporate Income Tax: Apportionment Regulation Updated
    • California—Multiple Taxes: Low Income Housing Credit Provisions Amended
    • California—Sales and Use Tax: Limited Tax Exclusion for Pawnbrokers Extended Through December 31, 2031
    • District of Columbia—Multiple Taxes: Sales Tax Increase Delayed, Decoupling Provision Readopted
    • Idaho—Multiple Taxes: Interest Rate on Tax Delinquencies and Refunds Set for 2027
    • Massachusetts—Motor Fuel Tax: Two Month Suspension For Gas And Diesel Tax Proposed
    • New Mexico—Tobacco Tax, Practice and Procedure: Rules Regarding New Regulations, Cigarette Taxes Amended
    • Oklahoma—Personal Income Tax: Electronic Filing Guide for Software Developers Issued
    • Oklahoma—Personal Income Tax: Electronic Filing Handbook Issued
    • Rhode Island—Sales and Use Tax: Report Generated through AI and Human Review was Taxable
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    State Tax Day - Current, S.9, Oklahoma—Personal Income Tax: Electronic Filing Handbook Issued, (Sep 24, 2026)

    An Oklahoma Tax Commission handbook provides individual income tax electronic filer information for tax year 2026.

    Electronic Filer Handbook, Oklahoma Tax Commission, September 1, 2026, ¶201-307

    Other References:

    Explanations at ¶89-106

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