Loading calculator…
Compute Form 1040-ES quarterly payments so you steer clear of underpayment penalties.
Total tax = federal income tax on (income − ½ SE tax − std deduction) + SE tax (15.3% on 92.35% of SE income). Divide by four to get the estimated payment due each quarter (April 15, June 15, Sept 15, Jan 15).
No. They use verified 2026 IRS/SSA figures but ignore credits, phase-outs and AMT. Use tax software or a CPA to file.
Marginal is the rate on your next dollar. Effective is total tax ÷ taxable income — always lower because earlier brackets fill first.
Take whichever is larger. 2026 standard deduction: Single $16,100 · MFJ $32,200 · HoH $24,150 · MFS $16,100.
Eight states impose no income tax. The rest are approximated at their top rate — see your state's brackets for a precise figure.
Results are estimates for educational purposes only and are not financial advice. Verify with a qualified professional before making decisions.
Last updated October 2026