Self Assessment · fixed fee
Self Assessment for CIS Contractors and Subcontractors
Construction Industry Scheme tax returns that reclaim your CIS deductions and claim every allowable expense.
- Qualified ICAEW, ACCA and AAT accountants
- Fixed fee, agreed before you pay
- Filed with HMRC before the 31 January deadline
★★★★★ Rated Excellent by clients on Google
MOST POPULAR PLAN
Standard
£199 + VAT
One-off fixed fee. No hidden extras.
- SA100 return prepared and filed online
- Employment, self-employed, rental, dividend and investment income
- Tax liability calculated, refund claimed if due
- Allowances and reliefs checked
- Filing confirmation sent to you
Trusted by 270+ businesses
Sole traders, landlords and directors
Qualified accountants
ICAEW, ACCA and AAT qualified team
Fixed fee, no surprises
Agreed up front, paid securely online
Part of Accotax
A trading style of Accotax, accotax.co.uk
Overview
Reclaim your CIS deductions
If you work as a subcontractor in construction, contractors deduct tax from your payments under the Construction Industry Scheme. Those deductions are payments on account towards your tax bill, and many subcontractors are owed a refund.
We prepare your return, set your CIS deductions against your tax bill, claim your construction expenses and tell you whether you owe or are due money back.
This service is for you if…
- You are a CIS subcontractor, labourer or tradesperson
- Tax is deducted from your payments by contractors
- You may be owed a CIS tax refund
- You are registered as self-employed in construction
- You use tools, vehicles or workwear for the job
- You want to apply for gross payment status
What we do for you
What is included in our cis contractors service
CIS deductions reclaimed
Your CIS statements are matched to your return so every deduction is credited against your tax bill.
Construction expenses
Tools, protective clothing, vehicle costs, training and other allowable expenses reviewed and claimed.
Tax calculation
You see your Income Tax, National Insurance and any payments on account before we file.
Online filing with HMRC
We file securely online and send you the filing confirmation and your SA302 tax calculation.
Deadlines and payments
We tell you exactly what to pay, how much, and when, including payments on account.
Accountant support
Ask us questions by phone, email or WhatsApp throughout, from a qualified accountant.
Know the rules
Key Self Assessment rules for cis contractors
- Contractors deduct 20% from registered subcontractors and 30% from unregistered subcontractors.
- Deductions are credited against your Self Assessment bill, and any excess is refunded.
- Gross payment status means no deductions, but it is subject to turnover and compliance tests.
- Keep every monthly CIS statement from each contractor.
- Allowable expenses can include tools, vehicle costs, workwear, training and insurance.
How it works
Your tax return done in four simple steps
1
Order online
Choose your package and pay securely online. Your fixed fee is confirmed before we start.
2
Send your details
Complete our short questionnaire and upload your documents. We tell you exactly what we need.
3
We prepare your return
A qualified accountant prepares your SA100, checks reliefs and sends you the figures to approve.
4
We file with HMRC
Once you approve, we file online and send your filing confirmation and tax calculation.
Client reviews
Rated by our clients on Google
EXCELLENT
Based on 300 reviews
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Jamie FletcherTrustindex verifies that the original source of the review is Google.
It was a pleasure working with Anum on our accounts. The whole process was swift and effortless, and it was one less thing to worry about. I'd highly recommend them.Posted on Google![]()
Mansur LimanTrustindex verifies that the original source of the review is Google.
Accotax have been our accountants for many years now. We maintained them, because of their professionalism. In the last coiple of years, i have working with Imran, who has been very professional and helpful in guiding us through the whole process explaining and clarifying every aspect of it. Very prompt in responding to questions and patient with us even when we seem to be slow. I really enjoy working with him. Thank youPosted on Google![]()
Muna MohamoudTrustindex verifies that the original source of the review is Google.
I highly recommend Imran to anyone looking for a reliable and knowledgeable accountant. He helped me sort out a very complicated backlog of accounts and prepared my overdue tax returns with professionalism and attention to detail. Throughout the process, he was incredibly patient, took the time to answer all of my questions, and explained everything clearly. He guided me through each step and helped rectify issues that had built up over time, making what felt like an overwhelming situation much more manageable. I'm very pleased with the service I've received and truly appreciate his support. If you need help with your accounts or taxes, I would highly recommend Imran.Posted on Google![]()
Sergey MTrustindex verifies that the original source of the review is Google.
I had a positive experience with Accotax. The work was completed promptly, my tax return was successfully filed, and I received a refund of overpaid tax. I found the cooperation efficient and helpful. Special thanks to Muhammad Saifullah for his assistance.Posted on Google![]()
Ebba QureshiTrustindex verifies that the original source of the review is Google.
Fabulous team at ACCOTAX - very efficient and good response time . Honest and professional with their work. I would highly recommend them even if you’re a young start up - or a large business they have it covered .Posted on Google![]()
Mael LeboucherTrustindex verifies that the original source of the review is Google.
We worked with a few different accountants before finally settling with Accotax, and we’re really glad we did. Their team is great. Abdul is responsive and easy to reach whenever I have a question, which makes a big difference. They take the time to understand how our business works and what our needs are. They are very knowledgeable, and when they don’t have the answer straight away, they take the time to look into it and get back to us quickly. Anum, who looks after our account on a day-to-day basis, including reconciling invoices and preparing the annual accounts, is amazing. She is professional, efficient, and follows the processes we have put in place together. She's also very quickin getting back to us whenever needed. We’re very happy to work with her and hope to continue doing so for as long as possible. Overall, Accotax has made our accounting experience much smoother and easier. We see them as a long-term partner as our business continues to grow. I would 100% recommend them.Posted on Google![]()
3rd HubTrustindex verifies that the original source of the review is Google.
Imran provides a very dependable and straightforward accounting service. He is always responsive and professional when managing our accounts. Excellent support.Posted on Google![]()
Martin TyrrellTrustindex verifies that the original source of the review is Google.
I have really impressed to date with all dealings with Accotax highly enough. From day one, they've made what can often be a complicated and stressful part of running a business feel straightforward and hassle-free. A special mention has to go to Anum, who has been friendly, incredibly responsive, and genuinely cares about providing the best possible service. No question is ever too much trouble, and she consistently goes above and beyond to make sure everything is dealt with efficiently. I wouldn't hesitate to recommend you to anyone looking for an accountant they can genuinely trust.Posted on Google![]()
Matthew LyonTrustindex verifies that the original source of the review is Google.
Great speedy service and very personable. Anum dealt with my income certificate and did everything quickly and helped me out massively. Very happy with the service provided.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
FAQs
CIS contractors Self Assessment: your questions answered
Yes. If CIS deductions plus other tax paid exceed your tax bill, HMRC refunds the difference when your return is filed.
Yes. You must register for Self Assessment and file a return each year.
Registered subcontractors suffer 20% deductions. Unregistered subcontractors suffer 30%. Registering reduces the deduction.
Tools, equipment, protective clothing, vehicle running costs and business mileage, training, and public liability insurance.
HMRC typically processes refunds a few weeks after your return is filed. We file as soon as we have your documents.
Get your tax return filed, on time and stress-free
Fixed fee from £199 + VAT. Pay online, send your details and let our qualified accountants do the rest.