HMRC-registered CIS specialists serving Harrow subcontractors, contractors and construction trades across HA1 to HA3. Same-day refund filing, monthly contractor returns and gross payment status applications. Fixed monthly fees.
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 Harrow
Harrow has one of North West London's busiest construction and trades economies, driven by the borough's relentless residential improvement market — loft conversions, rear and side-return extensions, basement digs and full refurbishments across the HA1, HA2 and HA3 streets of Harrow, Harrow-on-the-Hill, Wealdstone and North Harrow — alongside major commercial construction right on Harrow's doorstep, most notably the ongoing Wembley Park regeneration a few minutes down the road, the Harrow town centre regeneration plans, and the steady flow of self-employed subcontractors who travel into central London sites every day. The Construction Industry Scheme is one of the most common reasons Harrow trades overpay tax, because main contractors deduct 20 per cent (or 30 per cent if you are not verified) from every payment before you ever see it.
Your Tax Help Accountants, HMRC-registered, handles every aspect of CIS for Harrow construction trades. Monthly contractor returns (CIS300) for those engaging subcontractors on Harrow extensions, Wembley Park phases and central London sites, same-day refund filing for subcontractors who want their money back fast, subcontractor verification through HMRC's online service, gross payment status applications for those who qualify, and full Self-Assessment with every legitimate expense properly captured. All at a fixed monthly fee, with same-day filing available on the 6th of April so your refund lands months before the January crowd.
💡 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. Average refund £1,500-£5,000.
Full monthly CIS300 returns filed direct to HMRC for Harrow contractors engaging subcontractors. Verification handled, payment statements produced, penalties avoided.
We verify your Harrow subcontractors with HMRC before you pay them, ensuring the correct deduction rate (gross, 20 per cent or 30 per cent) is applied from day one.
For established Harrow subcontractors meeting the turnover, compliance and business tests, we prepare and submit gross payment status applications so you receive payments without deduction.
Simple receipt-capture app for tools, fuel, materials, PPE and CSCS card renewals. Every legitimate expense captured throughout the year, not scrambled together at the deadline.
Behind on Self-Assessment or CIS returns? We bring you up to date and engage with HMRC about penalties, requesting reductions where there's a reasonable excuse.
You can claim CIS refunds for up to four prior tax years. Many Harrow subcontractors are owed several thousand pounds across multiple years. Book a free call and we will scope it out.
📅 Get Your Free Backdated CIS ReviewReal Client Story
Client H is a self-employed carpenter based in Harrow, working through CIS for several main contractors on residential extensions across HA2, fit-out work at Wembley Park and refurbishment projects in central London. When he came to us his expense records were a glovebox full of receipts, a rough memory of which jobs he had done, and a previous accountant who filed a basic Self-Assessment without ever actively reviewing his expense position. His CIS deductions over the year had totalled around £6,600 against gross earnings of £33,000.
We rebuilt his records for the year and captured every legitimate expense: van and fuel costs across multiple sites, plasterer-specific tools and equipment (including a new mixer drill and several hawks and trowels mid-year), PPE and safety boots, his CSCS card renewal, scaffold tower training and an asbestos awareness refresher, mobile and admin costs, work clothing, materials he had purchased himself for several jobs, and a reasonable home-office proportion. We also moved him onto a simple receipt-capture app for going forward.
Outcome: CIS refund of £4,400, filed within 9 days of the 6 April tax year end and received from HMRC five weeks later. Client W now has a system that captures receipts as they happen and gives him a clear running view of his refund position throughout the year.
Why Your Tax Help Accountants
CIS Tax Questions Answered
No obligation. No jargon. A straightforward conversation about your Harrow CIS position, how much refund you should be expecting and how quickly we can get it filed.
Office: 020 8050 4564 | Mobile: 07478 645331 | info@yourtaxhelp.co.uk