Estimated Quarterly Tax Calculator

Estimate quarterly federal and state payments for self-employment or untaxed income.

Filing status

Expected self-employment profit

Other taxable income

Expected federal withholding

Federal credits

Prior-year total tax

State effective tax rate

Quarterly payment estimate

$4,798

Federal + simple state estimate

Annual amount to cover

$19,192

$17,702 federal before withholding

Self-employment tax

$9,043

Income tax after credits

$8,659

Simple state estimate

$3,690

Federal safe-harbor target

$9,200

Uses annualized 2025 federal tax plus SE tax and a flat state estimate. Safe-harbor display uses 100% of prior-year tax, or 110% when AGI is above $150,000.