Free educational tool · Business

Are your federal tax payments keeping pace with the year?

Compare the current-year and prior-year safe-harbor paths, account for expected withholding and payments already made, and identify the next regular installment target.

Uses configurable 2026 IRS rules · Financial inputs stay in your browser

Your planning figures

Compare two federal safe-harbor paths.

Use your expected full-year federal total tax—not taxable income—and the total withholding you expect for the year. Keep your prior-year Form 1040 nearby.

Expected total tax after applicable credits; include self-employment and other taxes.
Include expected withholding from wages, pensions, and other sources.
Usually the “total tax” amount from the prior Form 1040.
Determines whether the 100% or 110% prior-year rule applies.
Used to identify the next regular installment date.
Payment-pattern facts

Every financial figure stays in your browser. This form does not send, store, log, or attach your answers to a lead.

This educational estimate is not tax, legal, or investment advice and does not calculate an underpayment penalty. It covers regular federal individual estimated-tax installments only. Special rules, state obligations, disaster relief, fiscal years, farmers and fishers, nonresident taxpayers, estates, trusts, and annualized-income calculations require separate review.