Last updated: June 2026

Disclaimer

The information and calculators provided on Contractor Tax Tools (the “Site”) are for general informational and educational purposes only. They are not financial, tax, accounting, or legal advice and must not be relied upon as such.

Estimates only

Every figure produced by our calculators is an estimate based on the information you enter and on published tax rules that change over time. Tax legislation, rates, thresholds and allowances are subject to change and may vary based on your individual circumstances. We do not guarantee that any calculation is accurate, complete, or current.

No professional relationship

Using this Site does not create an accountant–client, adviser–client, or any other professional relationship. Before making any financial decision — including how to operate your contract, what taxes to pay, or your IR35 status — you should consult a qualified accountant, tax adviser, or other professional, and refer to official sources such as GOV.UK / HMRC (UK) or the IRS (US).

IR35 status

Our IR35 status checker provides an indicative result only. It is not a Status Determination Statement and has no legal standing. HMRC's own CEST tool and a professional contract review should be used for any decision you intend to rely on.

Limitation of liability

To the fullest extent permitted by law, Contractor Tax Tools accepts no liability for any loss or damage arising from your use of, or reliance on, this Site or its calculators. You use the Site at your own risk.

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