CIS Returns, sorted every month
Whether you’re a contractor deducting tax from subcontractors or a subcontractor wondering where your refund’s got to, CIS is easy to get wrong and expensive when you do. We handle verification, monthly returns and refund claims – so nothing’s late and nothing’s missed.
WHO THIS IS FOR
Contractor or subcontractor, we've got you
If you're a contractor
You’re deducting tax from your subcontractors and reporting it to HMRC every month. Miss a deadline and the penalties start immediately – £100 for the first day alone, rising fast. We verify your subcontractors, calculate the right deductions and file on time, every time.
If you're a subcontractor
Tax is being deducted from your pay before you see it – usually more than you actually owe. Most subcontractors are owed a refund and don’t realise it. We handle your verification status and make sure you claim back what’s yours at year end.
WHAT’S INCLUDED
Everything CIS requires
Verification handled
Every new subcontractor verified with HMRC before their first payment, so you deduct the right rate from day one – not the 30% default rate for the unverified.
Monthly returns filed
Your CIS return submitted to HMRC by the 19th of every month, without fail. We track the deadline so you don’t have to.
Refunds claimed
If you’re a subcontractor who’s overpaid, we calculate exactly what you’re owed and claim it back at year end – no leaving money with HMRC.
THE PROCESS
Getting CIS off your plate
1
Book a free call
Tell us whether you’re contracting or subcontracting, and roughly how many people or jobs are involved.
2
Get your fixed quote
One price, based on your volume – not per return, not by the hour.
3
Hand it over
Send us new subcontractor details as they come on board, or your pay and deduction records if you’re being paid under CIS. We do the rest.
QUESTIONS
Before you ask
What's the difference between a contractor and subcontractor under CIS?
A contractor pays subcontractors for construction work and must deduct tax before paying them. A subcontractor is the one doing the work and having tax deducted. Many businesses are both at once — paying subcontractors on one job while being paid as a subcontractor on another.
What happens if a subcontractor isn't verified?
HMRC defaults to a 30% deduction rate instead of the standard 20% — or 0% for subcontractors with gross payment status. That’s real money out of someone’s pocket unnecessarily, and it’s avoidable. We verify everyone before their first payment.
I think I'm owed a CIS refund — how do I claim it?
If you’re a subcontractor and more tax’s been deducted than you actually owe, the refund is claimed through your Self Assessment or Corporation Tax return at year end. We calculate exactly what’s owed and make sure it’s claimed — not left sitting with HMRC.
What are the penalties for a late CIS return?
£100 for being one day late, rising to £200 after two months, then further penalties the longer it runs — up to £3,000 or more for persistent lateness. The deadline is the 19th of every month and it doesn’t move.
Do I need to register for CIS?
If you’re a contractor paying subcontractors for construction work, yes — registration is mandatory before you make your first payment. Subcontractors can register too, which gets them the standard 20% rate instead of 30%.
Can you take over CIS if I'm switching accountants?
Yes. We handle the switch directly with your previous accountant so nothing’s missed and there’s no gap in your monthly filing.
Let's get your CIS sorted
Free 15-minute call. Fixed quote in writing. No obligation, no chasing.