In short: Revenue and cost recognition decides when the income and costs from a construction contract appear in your accounts. For most construction limited companies, revenue is recognised as the work progresses rather than when a job is invoiced or finished, and costs are matched to that revenue. Getting the timing right gives you a true picture of profit on every job, accurate year end accounts and a corporation tax bill based on real performance.
For construction businesses, working out when income or a cost belongs in the accounts is rarely simple. Contracts run across months or years, payments arrive in stages, and the value of work on site often differs from what has been invoiced. This guide explains how revenue and cost recognition works for UK construction limited companies, where it commonly goes wrong and why it matters for profit, cash flow and tax. It forms part of our wider construction accounting guidance.
What is revenue recognition in construction?
Revenue recognition is the set of rules that decides when income is counted in your profit and loss account. Cost recognition is its partner: it decides when the costs of doing the work are counted. Together they determine the profit your accounts report for any period.
In most businesses the answer is straightforward. A shop sells a product and records the sale. Construction is different because a single contract can span several accounting periods, and the work is delivered gradually rather than handed over in one go.
Why is revenue recognition different for construction companies?
Construction contracts rarely line up neatly with a company's financial year. A job might start in one period and finish in the next. The customer might pay through applications for payment, stage payments or milestones that bear little relation to how much work has actually been done. Retentions may be held back, variations may be agreed late, and costs can move as a project develops.
If income and costs were simply recorded when invoices were raised or received, the accounts could show a large profit one month and a loss the next, with neither reflecting how the job is really performing. That is why construction needs its own approach, alongside the day to day job tracking covered in our guide to construction cost accounting. If you are new to the topic, our explainer on how construction accounting works is a good place to start.
When should a construction company recognise revenue?
For most construction contracts, revenue is recognised over time as the work is carried out, rather than all at once when the job is complete. The principle is that the customer gains the benefit of the work as it is built, so the income is earned progressively.
In practice, this means estimating how far through each contract you are at the reporting date, often called the stage of completion. There are several recognised ways to measure it, including:
- comparing costs incurred to date with total expected costs
- using surveyed valuations of the work carried out
- measuring physical progress against the contract
Each method has strengths and weaknesses, and the right one depends on the type of work and the information your business holds. What matters is that the method is reasonable, applied consistently and supported by reliable records. Choosing the wrong measure, or switching between methods, can move profit between periods in ways that are hard to explain to lenders, investors or HMRC.
How are costs recognised on a construction contract?
Costs follow the same logic as revenue. The aim is to match the costs of a contract with the income they help to earn, so the profit reported on each job reflects reality.
That means looking beyond what has been paid. Materials delivered to site but not yet invoiced by the supplier, subcontractor work carried out but not yet applied for, and plant hire running on account all need to be captured. Equally, materials bought for a job but not yet used may not belong in the costs for the period yet.
A reliable view of costs also depends on a realistic estimate of the costs still to come. The cost to complete forecast is one of the most important numbers in construction accounting, because it drives both the stage of completion and the expected profit on the whole contract. Optimistic forecasts are one of the most common reasons profits look healthy during a job and then disappear at the end.
What happens when a contract is expected to make a loss?
If a contract is expected to make a loss overall, the accounting rules generally require that loss to be recognised straight away, not spread across the remaining life of the job. This is often referred to as an onerous contract.
This is an area where honest forecasting really matters. Recognising a loss early can be uncomfortable, but it gives a truer picture of the business and avoids a sudden shock in a later set of accounts. It also gives directors the chance to act, whether that means renegotiating, tightening cost control or reviewing how similar work is priced in future.
How do variations, claims and retentions affect revenue?
Variations
Variations change the scope, price or timing of the original contract. The question is not only whether the work has been done, but whether the change has been agreed and is enforceable. Recognising income on variations that have not been properly approved is a common way for accounts to overstate profit.
Claims
Claims for extra payment, such as for delay or disruption, are treated with more caution. Because the outcome is often uncertain, income from claims is usually only recognised when it is highly likely to be received.
Retentions
Retentions are often misunderstood. The money held back by a customer has usually been earned, even though it has not yet been paid. It should normally sit in the accounts as an amount owed to you, not be left out of revenue altogether. Retentions you hold back from your own subcontractors work the other way round. Tracking both sides properly protects profit and makes sure retentions are actually collected when they fall due.
Why is what you invoice not always the same as your revenue?
Applications for payment and stage invoices are commercial documents. They are shaped by the payment terms of the contract, not by the accounting rules. As a result, the amount invoiced on a job at any point can be higher or lower than the value of work actually carried out.
When you have invoiced more than you have earned, the difference is effectively income received in advance and should not yet be counted as revenue. When you have earned more than you have invoiced, the difference is income that belongs in the period even though it has not been billed. These adjustments, often grouped under work in progress, are where many construction accounts go wrong, particularly for businesses whose bookkeeping is driven entirely by invoices.
A well configured system makes this far easier to manage. Our guide to the best construction accounting system in the UK covers what to look for.
What commonly goes wrong at the year end?
The year end is where revenue and cost recognition matters most, because the figures feed directly into your statutory accounts and tax return. Common problems include:
- work carried out before the year end but invoiced afterwards being left out
- supplier and subcontractor costs arriving late and landing in the wrong year
- jobs valued on out of date cost to complete forecasts
- unapproved variations being counted as income
- losses on difficult contracts not being recognised
- retentions missing from the balance sheet
Getting cut off right requires close working between the site, the commercial team and whoever prepares the accounts. Regular management accounts during the year make the year end far less of a scramble, because each contract has already been reviewed several times before the final figures are needed.
How does revenue recognition affect your corporation tax bill?
For a limited company, taxable trading profit normally starts from the profit shown in accounts prepared under generally accepted accounting practice. That means the timing of revenue and costs on your contracts flows through to the timing of your corporation tax.
Recognising profit too early can bring a tax bill forward before the cash has arrived. Recognising it too late can store up problems for a later year and invite questions if the approach does not follow the accounting rules. There are also specific points around provisions, losses and the tax treatment of certain costs that are worth reviewing with an adviser. Our tax advisory team can look at how your contract accounting interacts with your tax position.
Which accounting rules apply to UK construction companies?
Most UK construction limited companies prepare their accounts under FRS 102, the main UK accounting standard, with smaller companies often using its simpler small company section. The smallest companies may use FRS 105, the micro entity standard. Larger groups may report under international standards.
Each framework sets out when contract revenue can be recognised, and they do not all work in exactly the same way. FRS 102 has been revised to follow a more structured, contract based approach to revenue, which looks at what has been promised to the customer and when each promise is fulfilled. Companies that have used the same method for years should check that their policy still fits the current rules, particularly where contracts combine design, build and maintenance.
How can Pulse help construction companies with revenue recognition?
Revenue and cost recognition sits at the heart of reliable construction accounts. When it is right, every job shows a true margin, the year end runs smoothly and tax is based on real performance. When it is wrong, it can hide losses, distort cash flow planning and cause problems with lenders and HMRC.
At Pulse, we work with construction limited companies to put in place practical contract accounting policies, reliable work in progress reviews and regular reporting that directors can act on. That sits alongside our wider support with CIS, the VAT domestic reverse charge, year end accounts and business advisory.
To find out more about how we support the sector, visit our construction accountants page, or get started with Pulse today.
Frequently asked questions
What is work in progress in construction accounting?
Work in progress is the adjustment that brings the revenue on a contract into line with the work actually carried out. It covers work done but not yet invoiced, and invoicing that has run ahead of the work. Reviewing it regularly is essential for an accurate profit on each job.
Can a construction company recognise profit before a job is finished?
Yes, in most cases. Where work is delivered over time, profit is usually recognised as the contract progresses, provided the outcome can be estimated reliably. If a loss is expected, it is normally recognised straight away.
How should retentions be treated in the accounts?
Retentions held back by a customer have usually been earned, so they should normally be shown as an amount owed to the business rather than excluded from revenue. They should also be tracked so they are collected when due.
Do small construction companies need to follow revenue recognition rules?
Yes. Every limited company must prepare its accounts under an accounting framework, and each one includes rules on contract revenue. The detail varies, but the principle of recognising income when it is earned applies across them.
What is an onerous contract in construction?
An onerous contract is one where the total expected costs are higher than the income it will bring in. The expected loss is generally recognised in the accounts as soon as it becomes apparent.
How often should construction contracts be reviewed?
Ideally as part of regular management accounts, so forecasts, variations and costs stay up to date. Leaving reviews until the year end increases the risk of errors and late surprises.
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