Rhode Island estimated tax (quarterly) calculator

Plan quarterly payments based on Rhode Island tax rules.

How this calculator works

Step 1 estimates your Rhode Island tax based on the taxable income you provide and the bracket schedule (3.75% up to 5.99%). The tool adjusts for Rhode Island-only income using your allocation %.

Step 2 uses your withholding and prior-year tax (if provided) to estimate a quarterly plan that aligns with Rhode Island's 90% current-year or 100% prior-year safe-harbor rules.

Step 3 divides the remaining tax into four equal payments and lists the standard due dates used by Rhode Island.

Frequently asked questions

When are Rhode Island estimated payments due?

Rhode Island uses the standard quarterly dates: April 15, June 15, September 15, and January 15 of the following year.

What if withholding changes later?

Recalculate with updated withholding to keep your quarterly plan accurate.

Is the safe harbor the same as federal?

Rhode Island generally follows a 90% current-year or 100% prior-year safe harbor. Special rules apply if at least two-thirds of your income is from farming or ranching.

Estimates use Rhode Island's published brackets and are not a substitute for official payment calculations.