CiteTax
Withholding & Planning
Self-employed, freelancing, or earning income outside a regular paycheck? These calculators help you understand what you owe — and when — so you can plan quarterly payments and avoid underpayment penalties.
Every rate is cited to the source: IRS Schedule SE, Publication 505, and current FICA rates from the Social Security Administration.
Estimate how much federal tax will be withheld from your paycheck based on your W-4 elections — IRS Publication 15-T Percentage Method, every step shown.
Open tool →Bonus Tax CalculatorSee exactly what's withheld from a bonus check — the flat 22% federal supplemental rate, Social Security, and Medicare — versus the tax the bonus actually adds at filing, bracket by bracket.
Open tool →Total Tax Burden CalculatorSee your complete 2026 tax picture in one place — federal income tax, Social Security, Medicare, and state income tax combined into a single effective rate and take-home pay figure.
Open tool →Paycheck Tax Breakdown CalculatorSee every tax deduction on your paycheck — federal income tax withholding, Social Security, Medicare, and state income tax — calculated line by line for your pay frequency and W-4 settings.
Open tool →Pre-Tax Contribution Tax Savings CalculatorCalculate exactly how much a 401(k), HSA, Traditional IRA, or SEP-IRA contribution saves you in taxes — federal income tax savings, FICA savings where applicable, and net cost after all savings.
Open tool →Self-Employment Tax CalculatorCalculate Schedule SE self-employment tax on net self-employment income, including the deductible half — cited to IRS Schedule SE instructions and current FICA rates.
Open tool →Quarterly Estimated Tax CalculatorCalculate your quarterly estimated tax payments using the safe harbor method — shows the annual and per-quarter amounts with IRS due dates and underpayment threshold cited.
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