Built for the people doing the work, not their accountant. Verify subcontractors, work out the right deduction and file your monthly CIS return online to HMRC - on site, in the van, or back at the yard.
No more fiddly spreadsheets. No more logging into the HMRC portal. No more guessing the right rate. TradeKit handles the whole Construction Industry Scheme - verification, deductions, statements and the monthly return - in the same app as your quotes and invoices.
Your CIS300 is due by the 19th of every month. Miss it by a single day and HMRC charges an automatic £100 penalty - even on a nil return. TradeKit gets the return ready so you can file in minutes.
The full scheme, handled - for contractors who pay subcontractors.
Check a subcontractor with HMRC and get the right tax treatment back - gross, the standard rate, or the higher unmatched rate - so you deduct correctly every time.
TradeKit applies the deduction to labour only and leaves materials out of it, so every payment to a subcontractor is worked out the way HMRC expects.
Build and file your CIS300 online to HMRC, with the declarations handled for you. Nil returns and periods of inactivity are covered too.
Produce the payment and deduction statements your subcontractors need to claim their tax back - ready to share as a PDF.
Every submission is stored with a confirmation step and a tamper-evident audit trail, so you always have proof of what was filed and when.
CIS lives alongside your quotes, invoices, expenses and mileage - no separate payroll software, no second subscription, no spreadsheets.
The same order you already work in - verify, pay, review, file.
Add a subcontractor and verify them with HMRC to confirm the deduction rate that applies to them.
Enter what you pay. TradeKit splits labour and materials and works out the CIS deduction for you.
At the end of the tax month, TradeKit pulls your records into the CIS300 ready for you to check.
Confirm the declarations and file online. Your subcontractors get their deduction statements.
The things people ask before they trust software with a return.
If you pay subcontractors for construction work, you’re a contractor under the Construction Industry Scheme and you must send HMRC a monthly return - the CIS300 - listing what you paid each subcontractor and the tax you deducted. TradeKit builds it from your records and files it for you.
CIS returns are due by the 19th of each month, covering the tax month that ended on the 5th. If you miss the deadline HMRC charges an automatic £100 penalty straight away, rising to £200 after two months - so it pays to file on time, even when it’s a nil return.
When you verify a subcontractor, HMRC tells you the rate to deduct: 0% (gross) for those with gross payment status, 20% for registered subcontractors, and 30% if they aren’t registered or can’t be matched. TradeKit applies the right rate automatically once a subcontractor is verified.
It’s the record you must give each subcontractor showing what you paid them and what you deducted. They use it to claim the deduction back against their own tax bill. TradeKit generates these as PDFs you can send straight on.
No. TradeKit handles CIS alongside your quotes, invoices, expenses and mileage, so you’re not juggling - or paying for - a second app just to stay on top of the scheme.
TradeKit’s CIS submissions are built against HMRC’s published CIS Online specification for contractors, including the IRmark signing and validation the service requires. TradeKit is developed by KIH Technologies Ltd, a UK-registered software company.
Subcontractor verification and CIS300 filing are built and HMRC-tested, and go live on production credentials. Everything else on this page is available today.
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TradeKit is a software tool that helps you prepare and file your own Construction Industry Scheme returns. It does not provide tax or accountancy advice. You remain responsible for the accuracy of the information you submit to HMRC. TradeKit™ is a trade mark of KIH Technologies Ltd (UK trade mark application UK00004386242).