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Most CIS subcontractors overpay tax. Enter your labour income, the deduction rate and your expenses to estimate your CIS refund. Then let our accountants claim it for you.
Uses 2026/27 rates. Nothing is stored or sent.
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Fully registered and supervised to act on your behalf.
CIS subcontractors.
General construction trades.
Trades paid under CIS.
Labour-only work.
Finishing trades.
Use the calculator for free, then let a Chartered Certified Accountant prepare and file your return. VAT included.
All prices include VAT.
Using 2026/27 rates.
Gross labour before deductions.
20% or 30%.
Tools, van, mileage, phone.
Estimated refund.
| Status | Deduction |
|---|---|
| Registered subcontractor | 20% |
| Not registered | 30% |
| Gross payment status | 0% |
In short: contractors deduct 20% from your labour. That deduction ignores your Personal Allowance and expenses, so most subcontractors overpay. Filing a Self Assessment return reclaims the difference.
A subcontractor earns £40,000 with £8,000 deducted. After £6,000 of expenses, profit is £34,000. Tax and Class 4 NI come to about £5,572, so the rebate is around £2,428.
Our Construction Industry Scheme service files your return and chases the refund. If you also work as a sole trader, see our self-employed accountants. More on our tax calculators page.
Official guidance: Construction Industry Scheme
Transparent pricing, confirmed in writing before any work begins. No hourly charges and no surprises.
Work directly with a qualified accountant who knows your affairs, never a call centre.
Responsive support by phone, email and WhatsApp, with clear advice in plain English.
Experienced with Xero, QuickBooks, FreeAgent and Sage, as well as spreadsheet records.
“My sole trader tax return was completed quickly and accurately. They even highlighted allowable expenses I hadn’t considered.”
“Used Wingate for a CGT submission recently, efficient, knowledgeable, and easy to deal with.”
“Wingate have processed my tax returns for some years now & I am more than happy with service provided.”
Share a few details and a qualified accountant will respond with a fixed-fee proposal, usually within one working day. All prices include VAT.
Request your quoteWhatsApp 0161 531 4179Real reviews from the self-employed, landlords, company directors and families we help with their tax returns and accounts.
Wingate Accountants Ltd is an independent firm of Chartered Certified Accountants, providing tax and compliance services to individuals and businesses across the UK.
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