Construction Company Accountants
We provide specialist accounting services for construction companies across Cardiff and South Wales, helping you stay on top of CIS compliance, job costing and HMRC rules so you can focus on winning and delivering projects.
Everything under Construction Company Accountants
From CIS deductions and VAT reverse charges to job costing and cashflow forecasting, we cover every financial need your construction business faces.
CIS Compliance & Deductions
We manage your CIS returns, verify subcontractors and keep you fully compliant with HMRC's Construction Industry Scheme rules.
Job Costing & Project Budgets
Track costs on every project, monitor profitability in real time and make sure each job delivers the margin you need.
VAT Reverse Charge
We handle the domestic reverse charge for construction services, keeping your VAT returns accurate and on time.
Cashflow & Tax Planning
Proactive planning to smooth your cashflow, reduce tax bills and help you reinvest in plant, staff or new contracts.
How we support construction businesses in Cardiff
Construction accounting is nothing like retail or professional services. You are dealing with fluctuating project costs, subcontractor payments, retention clauses, CIS deductions and the VAT reverse charge. Our team understands these complexities because we work with builders, fit-out contractors, groundworks specialists and trades across South Wales every day.
We start by getting your books in order: setting up job costing systems, reconciling CIS deductions and making sure every invoice, timesheet and材料 cost is recorded accurately. From there, we prepare monthly management accounts so you can see which projects are profitable and which are eating into your margin. You will also get cashflow forecasts that account for retention releases, staged payments and the natural lag between winning work and getting paid.
We keep you compliant with HMRC so you can keep your focus on site.
More information
What is included
CIS administration: We verify subcontractors, submit monthly CIS returns and reconcile deductions against your PAYE and Corporation Tax. If HMRC queries anything, we handle it.
VAT compliance: The domestic reverse charge shifted the VAT burden from contractor to customer for most construction services. We make sure your VAT returns reflect this correctly, avoiding penalties and repayment demands.
Job costing: Every project gets its own profit and loss account. Labour, materials, plant hire, subcontractors: we track it all so you know whether a job made money before the retention is even released.
Payroll: We run your payroll for site operatives, office staff and directors, handling auto-enrolment pensions, holiday pay and any Construction Industry Training Board (CITB) levy obligations.
Year-end accounts and tax: We prepare your statutory accounts, calculate Corporation Tax (or Income Tax and Class 4 NIC if you are a sole trader), and file everything with Companies House and HMRC on time.
Common concerns we address
Many construction businesses come to us after a costly mistake: a missed CIS deadline, an incorrect VAT return under the reverse charge, or simply no visibility into which jobs are profitable. We have seen directors chasing invoices while sitting on healthy retained balances they forgot to claim, and subbies paying too much tax because their previous accountant did not understand CIS deductions.
If your books are behind or your previous accountant was not construction-savvy, we will get you back on track. We also work closely with your site managers and quantity surveyors to align financial reporting with project timelines, so your accounts reflect the reality on the ground.
Construction-specific tax planning can save you thousands every year.
Why Cardiff and South Wales construction firms choose us
We are based in Cardiff and we know the local construction market well. Whether you are working on residential developments in the Vale, commercial fit-outs in the city centre, or infrastructure projects across the Valleys, we understand the contracts, the payment terms and the challenges you face. We have clients ranging from one-person building firms to contractors employing fifteen tradespeople, and we tailor our service to your size and ambition.
Our approach is proactive, not reactive. You will get regular updates on your financial position, early warnings about cashflow pinch points, and structured advice on when to invest in new plant, take on another employee, or hold off until a big invoice clears. We are here to help you grow sustainably, not just file your accounts once a year.
Worth considering
CIS Returns for Contractors
Monthly CIS returns prepared and filed on time, subcontractors verified, and deduction statements produced so you stay compliant and avoid HMRC penalties.
CIS Returns for Contractors→Before you get in touch
These are the questions we hear most often from construction business owners across Cardiff and South Wales.
Do I need a specialist construction accountant or will any accountant do?
How does CIS work and what do I need to do each month?
What is the VAT reverse charge and does it apply to me?
Can you help with job costing and project profitability?
What records do I need to keep for my construction business?
How much do your construction accounting services cost?
Do you work with sole traders as well as limited companies?
How quickly can you get my accounts up to date if I've fallen behind?
Let's talk about your construction accounting
Book a free consultation and we'll show you how we keep Cardiff construction businesses compliant, profitable and ready to grow.
Book a free consultation