CIS refund guides
Each guide answers one question in its first paragraph, shows the arithmetic where there is any, and names its sources with the date they were read. Written by Patrick Roper ACA. Every one of them says where HMRC's free route would do the same job.
How long HMRC is taking to pay CIS refunds
Two to twelve weeks depending on who you ask. What HMRC itself says, when to chase, and why April filers are paid first.
Claiming a CIS refund as a sole trader: the boxes on your return
The gov.uk page that ranks first is for limited companies. The sole-trader route is the Self Assessment return, and here are the entries.
What you keep from a £2,000 CIS refund: every firm's fee compared
From £0 to £720 in fees. Every published price on 1 November 2026, with the conditions the pages attach.
CIS refund calculator with the working shown
The estimate, then the arithmetic step by step on a £28,000 year, and the National Insurance the estimate leaves out.
Four years of unclaimed CIS refunds: the 5 April 2027 cut-off
Which tax years are still open, which closes next, and what a late claim involves.
Contractor took 20% but HMRC shows no record
The regulation that treats the deduction as paid, the evidence HMRC wants, and how to claim it.
Making Tax Digital and CIS: will it delay my refund?
Who joins in April 2027, what changes, and the refund delay trial users hit in 2026.