Skip to content
Free tool

CIS deduction calculator

Work out how much CIS a contractor will deduct from a subcontractor payment, and what you'll actually receive.

CIS deduction (20%)

£200.00

Net payment received

£1,000.00

CIS is deducted only from the labour element of a payment, not materials. Contractors deduct 20% for subcontractors registered with HMRC under CIS, or 30% for those who aren't registered. The deduction counts as an advance payment towards your Income Tax and National Insurance.

Keep the number — and the record behind it

TradeTally helps UK sole traders turn quotes, invoices and receipts into organised records that are ready when tax time comes around.