Quarterly Planner

Plan estimated payments. Nothing is saved — it’s just a calculator.

Inputs

Estimated annual tax

Tip: copy the “Estimated total tax (annual)” from the main calculator.

Taxes already paid

Enter any estimated payments and/or withholding.

Use “safe harbor” planning (simple 110%).This is a simplified rule of thumb — real safe harbor depends on your prior-year tax and AGI.

Annual target

Quarterly

Remaining

Jan 1 – Mar 31

Due April 15

Apr 1 – May 31

Due June 15

Jun 1 – Aug 31

Due September 15

Sep 1 – Dec 31

Due January 15

Disclaimer: This calculator provides estimates for informational purposes only. Consult a tax professional for personalized advice.