HMRC-registered CIS specialists for Slough subcontractors and contractors across SL1 to SL3. Fast refund filing, monthly CIS300 returns and gross payment status, all on a fixed monthly fee.
20% is deducted from every CIS invoice before your expenses are counted. Most subcontractors are owed a refund. Three numbers, instant estimate — no signup.
Calculate My CIS Refund →CIS Accountant in Slough
Few places in the South East keep trades busier than Slough. The Slough Trading Estate — one of the largest in single ownership in Europe — never stops turning over units, sheds and data centres, the town-centre rebuild around the High Street and the new residential blocks keep finishing crews on the go, and Heathrow on the doorstep pulls subcontractors onto airport and M4-corridor jobs all year. For all that work, the Construction Industry Scheme still bites: contractors take 20% (or 30% if you are not verified) off every payment before it reaches you, so most Slough subbies finish the year out of pocket to HMRC.
We run the full CIS service for Slough trades: same-day refund filing the moment the year ends, monthly CIS300 returns for anyone paying subcontractors, HMRC verification, gross payment status applications, and a Self-Assessment that captures every allowable cost. Fixed monthly fee, filed from 6 April so you are not waiting until winter for your money.
💡 As an HMRC-registered agent, we deal with HMRC directly on your behalf — filing monthly returns, processing refund claims and handling verifications. Same-day filing available from 6 April for the fastest refund.
What We Handle
Self-Assessment filed within 24–48 hours of 6 April with every legitimate expense captured. HMRC refunds typically arrive 4–6 weeks later.
Full monthly CIS300 returns filed direct to HMRC for Slough contractors paying subcontractors. Verification handled, deduction statements produced, late-filing penalties avoided.
We verify your subcontractors with HMRC before you pay them, so the correct rate — gross, 20% or 30% — is applied from the very first payment.
For established Slough subcontractors who pass the turnover, compliance and business tests, we prepare and submit gross payment status applications so you are paid without deduction.
A simple phone app logs tools, fuel, materials, PPE and CSCS renewals as you go — so nothing is lost and nothing is a scramble next April.
Behind on Self-Assessment or CIS returns? We bring you current and put your case to HMRC, asking for penalty reductions where there is a reasonable excuse.
Refund claims can be made for up to four previous tax years. Plenty of Slough subcontractors are sitting on several years' worth without realising it. Book a free call and we'll scope out exactly what's recoverable.
📅 Get Your Free Backdated CIS ReviewWorked Example
Take a self-employed dryliner moving between commercial fit-outs on the Trading Estate and a couple of residential blocks near the town centre. He invoices about £36,000 gross across the year, and roughly £7,200 is stopped under CIS before he is paid.
Built properly, the costs tell: mileage across sites and onto Heathrow jobs, board lifters and power tools, consumables and screws bought by the run, PPE, his CSCS card and a fire-stopping course, plus the business slice of his phone. Set against £7,200 of deductions, that base routinely brings back a healthy four-figure refund, filed in April and paid weeks later.
This is an illustrative example to show how a claim is built — your own figures depend entirely on your earnings, deductions and expenses, and we confirm them with you before anything is filed.
Why Your Tax Help Accountants
CIS Questions, Answered
No obligation, no jargon — just a straight conversation about your CIS position, the refund you should be expecting, and how fast we can file it.
Office: 020 8050 4564 | Email: info@yourtaxhelp.co.uk