CIS accountant services for UK Contractors

CIS Accountant Services
for Contractors and Subcontractors

Working under the Construction Industry Scheme can make tax, deductions and record keeping more complicated than they need to be. Findlay Todd provides specialist CIS accounting support for contractors and subcontractors, helping you stay organised, compliant and confident in your finances.

From CIS returns and deduction records to bookkeeping, tax returns and wider accountancy support, our team gives you clear, practical advice without unnecessary jargon.

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If you work in construction as a contractor or subcontractor, you’ll know that managing CIS correctly is essential to staying compliant with HMRC. The Construction Industry Scheme sets out how tax must be deducted, verified, and reported. Mistakes can lead to penalties and cash-flow disruption, so professional management is vital.

Need help with your CIS Accounting?

Findlay Todd Accountants provides specialist CIS support to contractors and subcontractors across Newcastle and the North East. We take care of registrations, subcontractor verifications, monthly CIS300 returns, and gross payment status applications, ensuring every submission is accurate and on time. With our help, your business remains compliant, your records stay audit-ready, and you can focus on delivering projects with confidence.

What are our CIS Accounting Services?

A CIS accountant specialises in managing the Construction Industry Scheme and understanding its detailed requirements. They ensure the right deductions are made, subcontractors are verified correctly, and all returns and records meet HMRC’s strict standards. At Findlay Todd, our team combines construction-sector knowledge with accounting expertise, so clients get practical guidance that fits how they actually work—on-site or in the office.

How our CIS Accountant Services Work

We begin by confirming whether you need to register as a contractor, subcontractor, or both. Next, we verify subcontractors with HMRC to establish the correct deduction rate (gross, 20% or 30%) and set up a simple process for collecting invoices and CIS statements. Each month we calculate deductions, prepare and submit the CIS300 return, issue payment & deduction statements to subcontractors, and reconcile everything to your accounting system. If you’re a subcontractor, we also help you reclaim over-deducted CIS through Self Assessment or Corporation Tax, improving cash flow fast.

What is included in our CIS Accountant Services

  • CIS registration and HMRC agent authorisation
  • HMRC verification of subcontractors and rate management (gross/20%/30%)
  • Monthly CIS300 returns and digital statements for each subcontractor
  • Set-up of easy document collection
  • PAYE/CIS reconciliation and journals into your accounts
  • Support with gross payment status applications and renewals
  • Help reclaiming over-deducted tax for subcontractors

Working as a construction subcontractor? Find out more about our specialist accounting for construction subcontractors and how we can support your wider accounting and tax requirements.

Construction Industry Scheme

Do I Need CIS Accountant Services?

If you work as a contractor or subcontractor under the Construction Industry Scheme, a CIS accountant can help you keep accurate records, account for deductions correctly and make sure your tax returns reflect the payments and deductions reported throughout the year. Professional support can also make it easier to stay on top of deadlines, bookkeeping and wider tax responsibilities as your business grows.

Accountants in Jarrow supporting small businesses, CIS accounting services

Why Choose Findlay Todd Accountants

Why UK Clients Stay With Us

We don’t just work with numbers, we work with people. That’s why our clients trust us year after year. We build lasting relationships through consistent, high-quality support.

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Will Aitchison profile picture
Will Aitchison
1. September, 2026
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Great experinece working with Findlay Todd for the first time on my business accounts. Would highly recommend to anyone thinking about using them.
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Jade Hamilton profile picture
Jade Hamilton
21. August, 2026
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I have been with Findlay Todd Accountants since opening my limited company in 2023 and they have been brilliant. Efficient, professional and great at their jobs. Dan is very approachable and will answer any of my daft questions haha! His team are all wonderful and I highly recommend them to everyone. Stress and hassle free always. Thanks again xxx
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Peter Todd profile picture
Peter Todd
14. August, 2026
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First time going through the process and the Team at Findlay Todd talked me through every step of the way and made sure I understood exactly what was going on and offered great advice. 100% recommend
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Carl Watkinson profile picture
Carl Watkinson
14. August, 2026
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Have dealt withFindlay Todd for a few years now and they are Very helpful and friendly. Great experience and definitely recommend .
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Ashley Holt profile picture
Ashley Holt
10. August, 2026
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Dan and the team were brilliant throughout my time working with them. Highly recommend anybody to reach out! True professionals.
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David Holmes profile picture
David Holmes
5. August, 2026
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I’ve used Finley Todd for a number of years . The offer a professional service from start to finish.
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David Ireland profile picture
David Ireland
31. July, 2026
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Findlay Todd have looked after my business for a number of years now and I have always found them to provide a first class service. With prompt responses to queries and clear timelines given for work to be undertaken, their level of service exceeds that which you would expect from a busy accountants ( and I have had plenty of dealings with other accountants over the years). I am more than happy to recommend their services to people who want a real world approach to accounting.
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Jack
22. July, 2026
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Absolutely brilliant, so helpful couldn’t recommend them enough
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Jenny Graham profile picture
Jenny Graham
21. July, 2026
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Super friendly and approachable team! So glad I've found them
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Paulo Rodrigues profile picture
Paulo Rodrigues
14. July, 2026
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I came across Findlay Todd through a Google search. I contacted them with a query regarding eligilibity for Seafarer's Earnings Deduction (SED). Daniel replied promptly and provided the help I was looking for in a way that made me feel reassured that I was communicating with someone who knows well their trade. Having contacted other accountants, Findlay Todd's replies to my emails have felt like a breath of fresh air. I will definitely consider using their personal tax return services in the future!

CIS accountant services for UK contractors FAQs

Let Us Answer Your Questions About CIS Accounting

Yes, contractors must register before they pay subcontractors. Subcontractors should also register; if not, contractors may have to deduct 30% instead of the standard 20%. We’ll check your position and complete the registrations.

A CIS accountant helps contractors and subcontractors manage their responsibilities under the Construction Industry Scheme. At Findlay Todd, we can support you with CIS registration, subcontractor verification, monthly returns, deduction records, tax returns and wider accounting requirements.

HMRC applies three rates: 0% (gross payment status), 20% (registered subcontractor), and 30% (unregistered or cannot be verified). We verify each subcontractor so you deduct the correct amount and avoid penalties.

The monthly CIS300 is due by the 19th of the following month (e.g., April’s deductions report by 19 May). Late filing can trigger penalties and interest. We file on time and keep proof of submission.

Yes. We can provide ongoing CIS accounting support rather than only helping at year end. This can include maintaining records, preparing returns and helping you stay on top of your wider bookkeeping and tax responsibilities.

You do not have to use a CIS accountant, but professional support can help you keep accurate records, understand the deductions made from your payments and make sure they are correctly accounted for when completing your tax return.

Yes. We help subcontractors prepare their Self Assessment tax returns, taking account of CIS deductions, income and relevant business expenses. We will review your records and explain your tax position clearly before your return is submitted.

You can apply if your tax affairs are up to date and your business meets turnover and compliance tests. GPS improves cash flow because contractors don’t deduct CIS from your payments. We’ll assess eligibility and manage the application.

Sole traders claim it through Self Assessment; companies offset through PAYE/Corporation Tax or claim a repayment. We prepare the return and supporting schedules so HMRC processes it quickly.

Keep subcontractor details and verifications, invoices, deduction totals, payment statements, and proof of filings. We set up a tidy digital trail so you’re audit-ready.

Related Accountancy Services

More Ways We Can Support You

Your accounting needs rarely sit in isolation. Alongside this service, Findlay Todd can support you with a wider range of accountancy services to help keep your finances organised, compliant and easier to manage.

Whether you also need help with bookkeeping, payroll, VAT, tax returns, or year-end accounts, our team can provide joined-up support tailored to your circumstances.

Tax Returns

We prepare accurate tax returns for contractors and subcontractors, making sure your CIS deductions, income and allowable expenses are properly accounted for.

Bookkeeping

Keep your CIS records, income and business expenses organised throughout the year, making tax returns and financial reporting much easier to manage.

Payroll

If you employ staff or subcontractors, we can provide reliable payroll support alongside your CIS accounting, helping you keep payments and reporting on track.