Tax calculators · 2026

Estimate the tax. Understand the gap.

Current federal rules, visible assumptions, and no financial inputs sent to a server.

Bonus Tax Calculator

Estimate take-home pay and compare withholding with marginal tax.

Estimate contractor profit, self-employment tax, QBI, state tax, and quarterly payments.

Model gains, federal loss deductions and carryforwards, NIIT, and selected-state tax.

Compare 2026 federal and state wage-income tax across two U.S. states.

Compare federal and selected-state tax for a joint return versus two separate returns.

Compare sole proprietor tax with salary, distributions, and entity cost.

Separate vest income and withholding from gain or loss at sale.

Stack a conversion through 2026 brackets and estimate pro-rata IRA basis.

Separate ordinary income, adjusted basis, and capital gain for an ESPP sale.

Estimate supplemental withholding, payroll tax, take-home, and the federal tax gap.

Screen an ISO exercise with 2026 AMT exemptions, phaseout, and rate thresholds.