Rhode Island estimated tax due dates for 2026
Rhode Island estimated income tax payments for tax year 2026 are due April 15, 2026, June 15, 2026, September 15, 2026, January 15, 2027. That matches the federal schedule. Below: who has to pay, how to avoid an underpayment penalty and where to pay, with the official source.
| Payment | Rhode Island due date |
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| 1 | |
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Federal 2026 estimated tax due dates, for comparison: April 15, 2026, June 15, 2026, September 15, 2026, January 15, 2027.
Who must pay Rhode Island estimated tax?
Every resident and nonresident individual shall make estimated Rhode Island personal income tax payments if his or her estimated Rhode Island personal income tax can be reasonably expected to be $250 or more in excess of any credits allowable against his or her tax, whether or not he or she is required to file a federal estimated tax for such year.
How do you avoid a Rhode Island underpayment penalty?
Interest is computed on the amount by which payments and credits are less than 80% of each installment when due; Rhode Island follows similar Internal Revenue Code exceptions (e.g., prior-year tax), claimed on Form RI-2210. Specific prior-year percentages were not stated on the 1040ES.
How much should you pay?
Start with your federal estimate: the free Quarterly Estimated Tax Calculator works out your 2026 federal payments and safe harbor. Rhode Island figures its own tax, so the state amount is separate.
