business · free Companion App · local in this browser
Estimated Tax Set-Aside Planner
Turn quarterly net profit and a chosen rate into the dollar amount you move to the tax bucket.
Enter your numbers
Enter only the details needed for this task. Check them against the original source.
Your result
Your result will appear here.
Engine self-test
Running golden cases…
Source notes
- U.S. Internal Revenue Service — Estimated Taxes
The IRS explains when individuals and sole proprietors must pay estimated tax quarterly and how safe-harbor payments work.
Reviewed 2026-10-09. Safe-harbor percentages depend on prior-year adjusted gross income. Confirm with the current-year instructions.
What this App does not do
This App multiplies numbers you enter. It does not compute your actual tax, file returns, or replace a tax professional.
This free App has no paid features. It does not contact an agency, employer, bank, seller, provider, or other person.