[ Accountants for Building Companies ]

Accountants for Building Companies

Building companies need more than a generic accountant. We work exclusively with builders, contractors and developers — structuring your company for tax efficiency, keeping CIS and payroll compliant, and filing accurate company accounts year after year.

Structure

Company set up for tax efficiency

Compliance

CT600, payroll and CIS on time

Accounts

Statutory accounts and P&L

Growth

Planning that scales with you

A building company has a different financial shape from almost any other business. Your income is project-based and lumpy, not a steady monthly stream. Your workforce is a mix of PAYE employees and CIS subcontractors, sometimes on the same site. Your assets include plant, vehicles and equipment that need capital allowances. And your profit margins depend on job costing being accurate — something most accountants never look at.

We work exclusively with building companies, which means we understand all of this from day one. We structure your company for tax efficiency — the right share structure, the right director remuneration mix of salary and dividends, and the right VAT scheme. We keep your CT600, company accounts, payroll and CIS filings on time, every time. And we plan ahead so that as you grow, your tax bill does not grow faster than it needs to.

From a new limited company with one director to an established contractor with twenty employees and a fleet of vans, we scale our service to match your business. We handle the compliance, you handle the building.

[ What We Handle ]

Accountants for Building Companies — the full scope.

  • ◢Company formation and share structure for builders
  • ◢Corporation tax (CT600) and marginal relief planning
  • ◢Statutory company accounts, balance sheet and P&L
  • ◢PAYE payroll and CIS for subcontractors
  • ◢VAT registration and construction VAT returns
  • ◢Director remuneration and dividend planning

[ Frequently Asked Questions ]

Accountants for Building Companies — your questions answered.

Should my building business be a limited company?

For most builders earning above £30,000–£40,000 per year, a limited company is more tax-efficient than operating as a sole trader, because you can take a combination of salary and dividends and keep corporation tax (currently 19–25%) below the higher income tax rates. We will review your income, expenses and growth plans and recommend the right structure.

What accounts does a building company need to file?

A limited company must file statutory accounts with Companies House and a corporation tax return (CT600) with HMRC every year. The accounts include a balance sheet, profit and loss statement, and notes. If you are VAT-registered, you also file quarterly VAT returns, and if you have employees or subcontractors, you file PAYE and CIS returns.

How do you handle both PAYE employees and CIS subcontractors?

We run your PAYE payroll for employees with RTI submissions to HMRC, and we handle CIS verification, deduction and monthly returns for your subcontractors. The two systems are kept separate but reconciled together so that your total labour cost is accurate and both sets of filings are on time.

Can you help with director salary and dividend planning?

Yes. We calculate the optimal mix of director salary and dividends each tax year to minimise your overall tax bill — corporation tax, income tax and National Insurance. The optimal split changes each year as thresholds and rates move, so we review it annually as part of your tax planning.

What if my building company has grown quickly?

Growth brings bigger tax bills, more compliance, and the need for better cashflow management. We help growing building companies by putting in proper bookkeeping and job costing, reviewing your VAT scheme (flat rate vs standard), planning for corporation tax payments on account, and making sure your payroll and CIS can handle a larger workforce.

Ready to talk to a specialist?

Book a free financial site review and we'll review your CIS, tax and accounts — no obligation.

Book Your Free Review
LCA
London Construction Accountants

Specialist chartered accountants for the UK construction sector. Tax returns, balance sheets and P&L statements engineered with structural precision.

© 2026 London Construction Accountants

Registered in England · Companies House No. 09727669

HMRC Registered Agents

◢ 31 JAN — Self assessment deadline◢ 31 MAR — CT600 Q4 (year-end Dec)◢ 30 JUN — First CT payment on account◢ 31 OCT — Paper self assessment deadline◢ 31 JAN — Self assessment deadline◢ 31 MAR — CT600 Q4 (year-end Dec)◢ 30 JUN — First CT payment on account◢ 31 OCT — Paper self assessment deadline◢ 31 JAN — Self assessment deadline◢ 31 MAR — CT600 Q4 (year-end Dec)◢ 30 JUN — First CT payment on account◢ 31 OCT — Paper self assessment deadline