Scaffolder Tax UK 2026/27: CISRS Cards, CIS Deductions and a £40,000 Example
Self-employed scaffolders working for contractors face CIS tax deductions at source, plus CISRS card and PPE costs. Full worked example on £40,000 gross CIS turnover.
Another CIS trade, another reconciliation at year-end
Like carpenters and other construction subcontractors, self-employed scaffolders working for contractors have tax deducted before they're paid, under the Construction Industry Scheme — 20% for registered subcontractors, 30% for those who haven't registered. The final Self Assessment return reconciles these advance deductions against the actual tax and Class 4 NI owed once genuine expenses are accounted for.
Self-Employed Tax Calculator
Calculate income tax, Class 2 and Class 4 National Insurance for self-employed and sole traders for 2025/26.
Open Self-Employed Tax calculatorWorked example: £40,000 gross CIS turnover
Gross turnover (invoiced to contractors): £40,000
CIS deducted at source (20%, registered subcontractor): £8,000
Deductible expenses:
- CISRS card renewal and progression training: £400
- PPE and safety equipment (harness, boots, high-vis): £600
- Hand tools: £700
- Van running costs/mileage: £2,200
- Public liability insurance: £300
- Accountancy fees: £300
- Total expenses: £4,500
Taxable profit: £40,000 − £4,500 = £35,500
Income tax: (£35,500 − £12,570) × 20% = £22,930 × 20% = £4,586
Class 4 NI: (£35,500 − £12,570) × 6% = £22,930 × 6% = £1,376
Total actual tax and NI owed: £5,962
CIS already deducted: £8,000 — Refund due: £8,000 − £5,962 = £2,038
Take-Home Pay Calculator
Calculate your net salary after income tax, National Insurance and student loan deductions.
Open Take-Home Pay calculatorDeductible expenses checklist
- CISRS card renewal and progression training
- PPE and safety equipment (harness, hard hat, boots, high-vis)
- Personal hand tools
- Van running costs or mileage
- Public liability insurance
- Accountancy fees
Filing and paying
Register as a CIS subcontractor to secure the 20% deduction rate, keep every CIS payment/deduction statement from contractors, and file your Self Assessment return by 31 January following the tax year end to reconcile CIS deductions and claim any refund.
uk-self-employed-allowable-expensesFrequently asked questions
Is scaffolding work covered by the Construction Industry Scheme?
Yes, scaffolding is a core CIS trade — contractors deduct 20% (registered subcontractors) or 30% (unregistered) from a self-employed scaffolder's payments and pass it to HMRC in advance, reconciled against the actual tax bill through Self Assessment at year-end.
Is a CISRS card tax deductible?
Yes, the cost of obtaining and renewing a Construction Industry Scaffolders Record Scheme (CISRS) card, along with any required training courses to progress through card levels, is a deductible business expense for a self-employed scaffolder.
Can a scaffolder claim PPE and safety equipment?
Yes, harnesses, hard hats, safety boots, high-vis clothing and other required PPE are fully deductible, either as a revenue expense for consumable items or via capital allowances for longer-life safety equipment.
How much does a scaffolder get back on £40,000 gross CIS turnover?
If £40,000 gross had 20% CIS deducted (£8,000), and actual expenses of around £4,500 bring taxable profit to £35,500, real income tax and Class 4 NI comes to roughly £5,946 — meaning a refund of around £2,054 once CIS deductions are reconciled against the actual bill.
Do scaffolders need their own tools and equipment, or is it usually provided?
This varies by arrangement — some self-employed scaffolders use contractor-supplied scaffold materials but bring their own hand tools, harnesses and PPE. Whatever is personally bought and used for the trade is deductible; equipment provided and owned by the contractor is not something the scaffolder can claim.
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