Accountants for Construction
Accountants for Construction in London
Specialist Construction Accountants in London
Construction is one of the most financially complicated sectors in the UK — CIS, project-based income, VAT reverse charge, retentions and lumpy cash flow. Accountactical is the specialist team London developers, contractors and housebuilders trust to handle that complexity, from one-man subcontractors to multi-site firms.
- ✓Monthly CIS returns filed by the 19th, without fail
- ✓VAT reverse charge applied correctly across contracts
- ✓Retentions and project income recorded properly
- ✓Cash flow visibility across every live site
Construction accounting risks
- ✓A missed CIS return brings immediate, escalating fines
- ✓Reverse charge misapplication wrecks subcontractor cash flow
- ✓Misrecorded retentions overstate profit and distort tax
Complete Accounting Services for Construction Companies
CIS Compliance
Verification, deductions and monthly returns filed on time, every month.
VAT & Reverse Charge
Correct treatment on every invoice, for contractors and subbies alike.
Project & Retention Accounting
Income, costs and retentions tracked accurately per project.
Cash Flow & Forecasting
Lumpy construction cash flow forecast so you see gaps before they land.
Payroll & Subcontractors
Site teams and subcontractors paid correctly under the right scheme.
Year-End Accounts & Tax
Statutory accounts and tax planning built for construction realities.
How Our Process Works
Free Review
Your current setup assessed — CIS, VAT, records and risks.
Setup
Systems, registrations and processes put on a solid footing.
Monthly Rhythm
Returns, books and payroll delivered to a steady monthly beat.
Year-End & Planning
Accounts finalised and the next year planned with intent.
Why London Construction Companies Trust Accountactical
- ✓Deep CIS and reverse charge expertise, applied daily
- ✓Project accounting that shows true margin per site
- ✓Subcontractor and contractor sides both understood
- ✓Fixed pricing that scales with your operation
- ✓Proactive deadline management across every obligation
Built for lumpy cash flow
Staged payments, retentions and slow-paying main contractors make construction cash flow unlike any other trade. We forecast it properly, so wages and materials are never a surprise.
Free tool: Had 20% deducted on your invoices? Estimate your rebate with our free CIS tax refund calculator.
What our clients say
“I was completely lost with declaring rental income and expenses. Accountactical guided me step by step, explained everything clearly, and even helped me save money.”
“Dealing with property tax felt overwhelming, but their expert team made it simple. Professional, approachable and accurate. I finally feel confident about compliance.”
“They understand the complexities of UK tax better than anyone. Their tailored advice gave me reassurance and strong financial results without unnecessary stress.”
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View all servicesFrequently asked questions
CIS returns are filed monthly and due by the 19th of each month. Late filings attract automatic penalties that escalate with repetition — ours go in on schedule, every time.
For many construction services between VAT-registered businesses under CIS, the customer accounts for the VAT instead of the supplier. Applied wrongly it distorts invoices and cash flow — we set it up correctly from the start.
Retentions need to be recorded so that profit reflects what you can actually invoice and when. We track them per contract, keeping your accounts and your tax position accurate.
Yes — we handle deductions and returns on the contractor side, and verification, records and refunds on the subcontractor side, often for businesses that are both at once.
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Free 30-minute consultation. Clear advice, fixed pricing and a plan you can act on.