The monthly cycle
CIS contractors report payments to subcontractors each month. The return is generally due by the 19th following the tax month, including a nil return or inactivity action where appropriate.
The safest process is a fixed monthly close rather than waiting for HMRC reminders.
Verify before paying
Check the subcontractor’s status and deduction rate before the first payment. Keep the verification details, invoice, labour and materials split, gross payment and deduction together.
Do not assume that a subcontractor used on another project has already been correctly verified for the current business.
Employment status matters
The monthly return includes a declaration about subcontractor status. Contracts, working arrangements and supervision should be considered rather than relying only on the label used on an invoice.
Employment status mistakes can create wider PAYE and penalty exposure.
A practical next step
Close CIS records shortly after the 5th, reconcile payments and approve the return well before the 19th. Issue payment and deduction statements promptly.
Accountants4All can help verify subcontractors, prepare returns and keep CIS records aligned with bookkeeping and payroll.
Official guidance
Rules and deadlines can change. Check the current official guidance and obtain advice for your circumstances.
GOV.UK: File CIS monthly returnsNeed a clear next step?
Talk through the records, deadline or setup involved.
This article provides general information and is not personal tax, legal or financial advice.