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How much should a construction company pay its accountant? Fees explained, with real numbers

What accountants charge UK construction companies between £1m and £15m, what drives the fee, what should be included, and when the cheapest option costs the most.

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How much should a construction company pay its accountant? Fees explained, with real numbers
The short answer. For a construction company between £1m and £15m, a proper monthly service (bookkeeping with job costing, CIS, VAT, payroll, year-end, tax planning and a monthly management document with a review call) costs £1,200 to £3,500 a month from a specialist. Compliance-only from a general practice is £500 to £1,200 a month but produces none of the information that runs the business. The fee is usually recovered several times over in the first year from unreclaimed CIS, untracked retentions and unclaimed allowances.

Why we publish our prices

Most accountants don't. We think a contractor who's about to trust someone with the numbers deserves to know what it costs before the call. Our fees are on the pricing page; this article is about what drives any accountant's fee for a construction business and what you should get for it.

What drives the fee

  • Transaction volume. Bank transactions a month, reconciled weekly. 150 a month is a few hours; 600 is a part-time bookkeeper.
  • Payroll headcount and frequency. Weekly payroll for 20 people is four times the work of monthly for 8.
  • CIS. Subcontractors verified, deductions calculated, statements issued, returns filed by the 19th. The number of subcontractors drives it, and whether CIS suffered needs reconciling and offsetting monthly.
  • VAT complexity. Reverse charge checking on every customer and supplier; monthly rather than quarterly returns if you're in repayment.
  • Entities. Each additional company (holding company, SPV) adds accounts and compliance.
  • What you want to know. Compliance only, or margin by job, a retentions ledger, a cash forecast and a monthly review. This is the biggest variable and the one most worth paying for.

Three tiers of service, and what they cost

TierWhat you getTypical monthly feeWho it suits
Compliance onlyYear-end accounts, corporation tax, VAT returns, maybe payroll. Bookkeeping often done in-house.£500 to £1,200Businesses under £1m with a good in-house bookkeeper and no appetite for management information
Compliance plus bookkeepingAs above plus bookkeeping and CIS, quarterly management accounts at company level£900 to £1,800Businesses that want the admin off their desk but aren't yet running on numbers
Construction specialist, full serviceJob-costed bookkeeping, CIS incl. monthly suffered offset, reverse charge VAT, payroll, year-end, pre-year-end tax planning, monthly working document (margin by job, retentions, 13-week cash, tax position) and a review call£1,200 to £3,500£1m to £15m contractors who want to run the business on numbers

What should always be included

Software (Xero, Dext, job costing). Filing deadlines and reminders. Phone calls and emails without a clock running. A pre-year-end tax planning meeting. Handover from your previous accountant. If any of those are extras, the headline fee isn't the real fee.

When the cheapest option costs the most

A £3m subcontractor paying £800 a month for compliance only. CIS suffered reclaimed annually: £60,000 sitting with HMRC for most of the year. £54,000 of retentions with no release dates, £18,000 of it overdue. Four years of plant on HP with no capital allowances claimed: £140,000 of tax. Two customers served at a loss, unknown because nobody split the margin. None of that is in the £800. All of it is real money. The gap between the cheap fee and the specialist fee was about £1,500 a month; the cost of the cheap fee was six figures.

One-off fees to expect

  • Catch-up bookkeeping if the books are behind: quoted after a review, typically £600 to £2,500.
  • A structured onboarding or reset programme: ours is the 90 Day Profit Reset at £1,950, £4,500 or £7,500 depending on how much we do versus you.
  • Project work: R&D claims (usually a percentage of relief), group restructuring (fixed quote), tender cash modelling.

Questions to ask any accountant before you sign

  1. How many construction clients do you have, and what size?
  2. Will my revenue be recognised on a certified basis?
  3. Do you offset CIS suffered monthly or reclaim annually?
  4. Will I get margin by job every month? Within how many days of month-end?
  5. Who do I speak to, and how quickly do they reply?
  6. What's included in the fee and what's extra?

The answers tell you more than the price does.

Sources

Questions people ask

Is a fixed monthly fee better than hourly?

For a construction business, yes. Hourly billing means you hesitate to ask questions. A fixed fee agreed up front, that only changes when the business does, lets you use your accountant.

Should bookkeeping be done in-house or outsourced?

Either can work. In-house is cheaper per hour but needs someone who understands job costing, CIS and reverse charge, and cover when they're off. Outsourced to a construction specialist usually produces better information for a similar cost once you count the overhead.

How much does the 90 Day Profit Reset cost?

Self Build is £1,950 (you do the work with our workbooks), Supply & Fit is £4,500 (we rebuild the numbers, you make the decisions), Turnkey is £7,500 (everything, plus a senior accountant in your monthly meeting). All plus VAT, one-off.

Will a specialist accountant cost more than my current one?

Usually, by £500 to £1,500 a month. In most cases the first fix finds more than that in the first quarter: unreclaimed CIS, untracked retentions, unclaimed allowances.

About the author. Chris Neuman is the founder of Taxtful, accountants and advisers to UK construction companies turning over £1m to £15m. Taxtful is construction-only: every client, every template, every conversation. This article is general guidance, not advice on your circumstances; rates and rules change, so check the current position before acting.

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