Self-employment / tax reserve

Quarterly estimated tax calculator

Set aside a conservative amount from freelance, gig, or business profit. This is a planning estimate, not an official tax return or payment voucher.

Results are estimates for planning. Review the assumptions and verify important decisions with the right official or qualified source.

step 1 / your inputs

Start with your numbers.

The gray example is only a guide. Replace it with your own number.

Estimated annual net profit$Revenue after ordinary business expenses. Example: 48000Other annual taxable income$Optional W-2 or other taxable income. Example: 0Tax already withheld$Federal or other withholding already paid. Example: 6000Planning total tax rate%Use a conservative assumption and verify with official guidance. Example: 25

step 2 / see your estimate

Your result updates as you type.

Estimated annual reserve

After the withholding entered above

Estimated quarterly amount

$0.00

Divide into four planning payments

Profit used

Use net profit after eligible business expenses

Calculated in your browser. No data is sent.

How to use this estimate

Tax rules, deductions, filing status, state taxes, and safe-harbor rules can change the amount due.
Keep a visible as-of date and verify payment instructions with the IRS or your state tax agency.
Reserve taxes from each payment rather than waiting until the end of the year.

Common questions

Is this an official quarterly tax calculation?+

No. It is a planning estimate. Use IRS Form 1040-ES, official tax guidance, or a qualified professional for actual estimated payments.

Should I calculate tax on revenue or profit?+

A planning estimate generally starts from net business profit after eligible expenses, but the correct treatment depends on your situation.

the WageWillow guide

What this quarterly tax estimate includes

The calculator starts with estimated net self-employment profit, adds other taxable income, subtracts entered withholding, and applies a planning rate. It is deliberately simple and should not be presented as an official tax computation or payment voucher.

Use net profit after ordinary business expenses.
Keep federal, state, and self-employment-tax assumptions visible.
Link to IRS Form 1040-ES and current payment instructions.

Why tax reserves need an as-of date

Tax brackets, deductions, filing choices, estimated-payment rules, and state requirements can change. Keep the calculation assumptions and update date visible, and direct users to official IRS or state guidance for the amount and timing that actually apply to them.

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