Home › Areas We Cover › Cardiff › CIS Accountant
🏗️ CIS Specialist · Cardiff

CIS Accountant in Cardiff — Contractors & Subcontractors

HMRC-registered CIS specialists serving Cardiff fully online. Monthly returns on time, refund claims maximised, self-assessment sorted — fixed fee.

📅 Book Free 15-Min Call📞 07478 645331
HMRC Registered AgentSame-Day FilingFixed Monthly FeesCIS Refunds Claimed
CIS Accountant in Cardiff

CIS Made Simple for Cardiff Contractors & Subcontractors

Cardiff is Wales' capital city and one of the UK's fastest-growing urban centres, with major ongoing construction activity including city centre developments, significant Cardiff Bay regeneration, large residential schemes and infrastructure investment across CF10 to CF14. The Welsh construction sector employs a large number of CIS contractors and subcontractors working across both the capital and the wider South Wales region. CIS rules apply identically in Wales as in England — monthly returns, strict deadlines and significant penalties for non-compliance. Your Tax Help Accountants, HMRC-registered, handles CIS for Cardiff contractors and subcontractors fully online at a fixed monthly fee.

💡 As an HMRC-registered agent we deal with HMRC directly — filing CIS returns, verifying subcontractors, managing compliance and claiming back your overpaid tax.

What We Handle

Complete CIS Service for Cardiff

📅

Monthly CIS Returns

Filed by the 19th every month — all subcontractor payments and deductions covered. Never miss a deadline.

📄

Deduction Statements

Accurate statements issued to every subcontractor monthly — gross payment, deduction and net shown clearly.

✅

Subcontractor Verification

Every new subcontractor verified with HMRC before first payment — correct rate applied from day one.

💰

CIS Refund Claims

Self-assessment filed with every allowable expense claimed — recovering all overpaid CIS deductions.

📋

Self-Assessment Returns

Full SA100 annually covering all income, deductions and expenses — maximising your refund.

🏆

Gross Payment Status

Application for gross payment status if you qualify — no deductions taken from your payments at all.

Are You Owed a CIS Refund?

Most Cardiff CIS subcontractors overpay tax throughout the year. Book a free call and we will calculate exactly what you are owed.

📅 Find Out What You're Owed — Free Call
Why Your Tax Help Accountants

CIS Specialists. Fixed Fee. Always Responsive.

  • HMRC-registered agent — we deal with HMRC directly on your behalf
  • Same-day filing for urgent or overdue CIS returns
  • Fixed monthly fees — no surprises, no hourly rates
  • All deduction rates and rules handled correctly
  • Self-assessment with every allowable expense claimed
  • Serving Cardiff (CF10-CF14) and the whole of the UK online
4.5★
Google Rating
Same Day
Urgent filing available
Fixed Fee
No surprise bills — ever
CIS Questions Answered

Frequently Asked CIS Questions

Does CIS work the same way in Wales as in England?
Yes. CIS is a UK-wide scheme administered by HMRC and operates identically in Wales. The same registration requirements, deduction rates, monthly return deadlines and refund procedures apply to Cardiff contractors and subcontractors as to those anywhere else in the UK. Welsh language services are available from HMRC for those who prefer them, though we communicate in English.
I work on Cardiff Bay regeneration projects — how are large project CIS deductions handled?
On large projects the main contractor or developer's payroll team handles CIS verification and deductions. You should receive a deduction statement each time you are paid showing the gross amount, materials, deduction and net payment. Keep all your statements throughout the year — we use them to calculate your total CIS tax credit for your self-assessment and claim back any overpayment.
Can you handle CIS for Cardiff subcontractors who also work on projects in England?
Yes. CIS is a national scheme so your deductions from all contractors — whether in Cardiff, London or anywhere else in the UK — are all included in the same self-assessment return. We pool all your deductions from all sources, claim all your allowable expenses and calculate your net refund or liability across your full year's work wherever it was carried out.
What is the CIS penalty if I miss the 19th of the month deadline in Cardiff?
HMRC issues an automatic £100 penalty for each monthly return filed after the 19th of the month following the tax month — even if the return is nil and even if it is only one day late. This increases to £200 after two months, £300 after three and can rise substantially further for persistent late filing. We file your return every month before the deadline as part of your fixed service.
How do I get started?
Book a free 15-minute call via Calendly or call 07478 645331. We review your CIS position, tell you exactly what needs doing and give you a clear fixed-fee quote. We can take over immediately.
Related Guides

Further Reading

🏗️How to Claim a CIS Tax Refund — Step-by-Step Guide for 2026 → 📋How to Register for Self Assessment with HMRC in 2026 → 💼Do I Need an Accountant as a Sole Trader? The Honest Answer for 2026 →

Get Your CIS Sorted Today

No obligation. No jargon. A straightforward conversation about your Cardiff CIS situation.

📅 Book Free 15-Min Call📞 07478 645331

Email: info@yourtaxhelp.co.uk  |  yourtaxhelp.co.uk