CIS refund calculator

How much CIS tax are you owed back?

Contractors take 20% off your labour before they pay you. If you earned under about £45k, you've probably had too much taken. See your estimate in 2 minutes.

  • HMRC rates 2025-26 to 2027-28
  • Nothing saved
  • Free

Get your refund done by S+ Money (opening January 2027) →

Tax year
1 · What you earned
£
£
2 · Your expenses for the year
£
£
£
£
£
£
£
£
Using actual van costs instead of mileage?
£
3 · Also had a PAYE job or pension? (optional)
£
£
Your estimate
£–

Put in what contractors paid you to see your estimate.

Work elsewhere too? Your refund may be smaller.

Want us to claim it for you?

Get on the list. We open in early 2027, once S+ Money is registered to file for you. Until then you can claim it yourself on your tax return.

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Questions? hello@splusmoney.co.uk

Rates used

Checked on GOV.UK on .

Estimate only, not tax advice. This uses the GOV.UK rates for the year you pick and only the figures you enter. It doesn't see your HMRC record, student loan, Marriage Allowance, pension or Gift Aid relief, savings, dividend or property income, or losses, and it isn't for limited companies. Your real refund or bill is what HMRC works out from your Self Assessment return. Your figures stay in your browser: nothing is sent or saved.
Your estimate
£–
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