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    • All States—Sales and Use Tax: State and/or Local Tax Rate Changes Reported During August 31 - September 4, 2026
    • California—Corporate, Personal Income Taxes: 2026 Rate Schedules, Filing Thresholds, Other Adjusted Figures Released
    • Michigan—Sales and Use Tax: Maintenance of Ambient Temperature Did Not Qualify For Industrial Processing Exemption
    • New Hampshire—Multiple Taxes: Interest Rates Unchanged for 2027
    • New York City—Miscellaneous Tax: Insurance Agent Was Independent Contractor Subject to Unincorporated Business Tax
    • New York—Sales and Use Tax: Cloud-Based Document Management Services Properly Deemed Taxable Prewritten Computer Software
    • South Carolina—Multiple Taxes: Penalties and Penalty Waiver Standards Discussed
    • Tennessee—Multiple Taxes: Various Tax Manuals Updated
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    State Tax Day - Current, S.4, New Hampshire—Multiple Taxes: Interest Rates Unchanged for 2027, (Sep 8, 2026)

    The interest rates for the underpayment and overpayment of New Hampshire taxes administered by the Department of Revenue Administration are unchanged for calendar year 2027. The interest rate for underpayment remains at 9%, and the rate for overpayme ...

    The interest rates for the underpayment and overpayment of New Hampshire taxes administered by the Department of Revenue Administration are unchanged for calendar year 2027. The interest rate for underpayment remains at 9%, and the rate for overpayment remains at 6%.

    Technical Information Release TIR #2026-002, New Hampshire Department of Revenue Administration, September 1, 2026, ¶200-988

    Other References:

    Explanations at ¶89-204

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