Business tax / Free financial tools

Self-Employed Tax Calculator

Turn projected freelance revenue and costs into a profit, federal tax estimate and monthly reserve.

US federal • 2026 · Instant results · No sign-up

Enable JavaScript to use this interactive calculator. The calculation method and assumptions are explained below.

How this calculator works

Business profit is revenue less eligible expenses and capital deductions plus add-backs. Federal income tax is compared with and without positive business profit, after the deductible half of regular self-employment tax. The 2026 Social Security wage base is coordinated with entered wages.

Planning estimate only. Review the assumptions alongside the result before using it for a tax, financing or business decision.

IRS 2026 tax tables · IRS self-employment tax

Common questions

Does the model determine my QBI deduction?

No. Enter a deduction only after eligibility and income limits have been checked. The default is zero.

What happens if I have a business loss?

The loss remains visible, but this tool does not assume it offsets other income. At-risk, passive-activity and excess-business-loss limits may apply.

Put your numbers into context.

A calculator can help you ask better questions. Tell ZTax what you are planning and we will discuss the records, scope and support you need.

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