What Is a Profit and Loss Account?
A profit and loss account is the financial statement that shows what a business earned, what it spent, and what was left over across a period of time. That period is usually a year, but management run one monthly.
It starts with turnover at the top, works down through the costs of running the business, and ends with the profit or loss for the year. Everything in between explains how one number became the other.
The single most useful thing to understand about it is that a profit and loss account covers a stretch of time. It answers "how did we do between April and March". The balance sheet answers a different question, "what do we own and owe right now", at one fixed date. Confusing the two is the most common mistake we see when business owners open their accounts for the first time.
There is a second thing worth knowing straight away, and almost nobody explains it. In the UK this statement has three different names, and all three are currently correct. Which one you use depends on which rulebook you are reading, not on what the statement contains.
Profit and Loss Account, Income Statement or P&L?
Search for this topic and you will find American sources calling it an income statement and British ones calling it a profit and loss account, with a line somewhere saying they are the same thing. That is true, but it is not the whole answer, and the whole answer matters if you are a UK company director.
Company law is the oldest of the three. The Companies Act 2006 requires directors to prepare a "profit and loss account". That is the term used throughout the Act and in the accounts regulations that sit underneath it. It is the name that governs what you legally have to produce and file.
UK accounting standards use different words. FRS 102 asks for an "income statement" where a business presents its results in two statements, or a "statement of comprehensive income" where it uses a single statement. The standard itself carries a note acknowledging that the income statement is the thing the Act calls the profit and loss account.
International standards go further again. IAS 1 calls it the "statement of profit or loss and other comprehensive income", which is precise and nobody says out loud.
So the honest answer to "income statement versus profit and loss" is that they are the same statement wearing the badge of whichever framework you happen to be holding. In practice, small UK companies see "profit and loss account" on their filed accounts and their accountant's cover letter, "income statement" inside the accounts prepared under FRS 102, and "P&L" in every conversation about either.
Our view is that the naming muddle does real damage at the small end of the market. A director who has been told to "check the income statement" and cannot find one in a set of accounts headed "profit and loss account" often concludes that something is missing. Nothing is missing. If you take one thing from this section, take this: P&L, income statement and profit and loss account are the same document, and you will never see all three names on the same page.
What Goes on a Profit and Loss Account
Working from the top down, a standard UK profit and loss account moves through five stages.
Turnover. The value of what you sold in the period, excluding VAT. Sales made, not cash collected, which is the difference the accruals basis introduces. If you are unsure whether your figure should be called turnover or revenue, the two mean the same thing in ordinary UK use, and we unpick the edge cases in is turnover the same as revenue.
Cost of sales. The direct costs of producing what you sold. Materials, the wages of people doing billable work, subcontractors, carriage in. Turnover less cost of sales gives gross profit.
Operating expenses. Everything you would still be paying if you sold nothing next month. Rent, insurance, software, accountancy fees, most salaries, marketing. UK statutory layouts split these into distribution costs and administrative expenses. Everyone else calls them overheads. Gross profit less these gives operating profit.
Finance and other items. Bank interest paid, interest received, and anything that sits outside trading. This gives profit before tax.
Tax. Corporation tax on the profit, for a limited company. What remains is the profit for the financial year, and it belongs to the shareholders.
We cover what each of those profit figures actually means, and why they can move in opposite directions, in gross profit vs net profit. This guide is about the statement itself rather than the definitions.
A Worked Profit and Loss Account Example
Here is a full year for a fictional design agency, laid out the way a small UK limited company's accounts would show it.
| £ | |
|---|---|
| Turnover | 480,000 |
| Cost of sales | (192,000) |
| Gross profit | 288,000 |
| Distribution costs | (18,000) |
| Administrative expenses | (222,000) |
| Other operating income | 4,000 |
| Operating profit | 52,000 |
| Interest payable | (4,000) |
| Profit before taxation | 48,000 |
| Tax on profit | (9,120) |
| Profit for the financial year | 38,880 |
A few things to read out of it, because a P&L is only useful if you interrogate it.
The gross margin is 60 per cent, which is normal for a service business selling people's time and would be alarming for a food wholesaler. Margins are only meaningful against your own sector and your own history, which is the point we make at length in gross margin.
Administrative expenses of £222,000 are absorbing 46 per cent of turnover. That is the number an owner should watch month to month, because overheads are what turn a healthy gross margin into a thin bottom line.
Profit before tax of £48,000 sits below the £50,000 small profits threshold, so the whole amount is taxed at 19 per cent rather than dragging into the marginal relief band. On these numbers, £2,001 of extra profit would have cost £530 in extra tax rather than £380. That is the sort of thing worth knowing in February, not in December when the accounts are being signed.
And the £38,880 at the bottom does not appear in anyone's bank account. It is added to retained earnings on the balance sheet, where it becomes the pot that dividends can lawfully be paid from.
The Two Statutory Formats, and Why Gross Profit Is Optional
Here is something the international guides on this subject cannot tell you, because it only applies in the UK. Your profit and loss account has to follow one of the formats set out in the company accounts regulations. There is a genuine choice, and it changes what your accounts show.
Format 1 analyses costs by function, meaning by the job the cost does. It runs turnover, cost of sales, gross profit, distribution costs, administrative expenses. This is what almost every set of small company accounts in the country uses, and it is the layout in the worked example above.
Format 2 analyses costs by nature, meaning by what the cost actually is. It runs turnover, changes in stock, own work capitalised, other operating income, raw materials and consumables, staff costs, depreciation, other operating charges.
Same business, same year, same profit. Here is the agency again under Format 2.
| £ | |
|---|---|
| Turnover | 480,000 |
| Other operating income | 4,000 |
| Raw materials and consumables | (96,000) |
| Other external charges | (140,000) |
| Staff costs | (172,000) |
| Depreciation | (16,000) |
| Other operating charges | (8,000) |
| Operating profit | 52,000 |
Notice what vanished. There is no gross profit line, and no cost of sales line, because Format 2 does not have them. Two identical businesses can file legally correct accounts where one reports a 60 per cent gross margin and the other reports no margin at all, purely because of a layout choice made by whoever set up the accounts software.
This has consequences that people discover at bad moments. If you are benchmarking yourself against a competitor's filed accounts and they used Format 2, you cannot calculate their gross margin. If you are selling your business and the buyer's analyst wants three years of margin history, a Format 2 house needs the analysis rebuilt from the nominal ledger. And if you switched formats at some point, your own year on year comparison quietly stopped comparing like with like.
Our view is that Format 1 is the right default for any business that sells a product or bills time, precisely because it forces gross profit onto the face of the statement. Format 2 makes sense for manufacturers with significant work in progress, where changes in stock genuinely need showing separately. Everyone else should be able to see their margin without asking for it.
The Profit and Loss Account and the Balance Sheet
These two statements are usually taught as separate topics, which hides the one mechanical fact that connects them.
The profit and loss account is the only financial statement that resets to zero every year. On the first day of a new financial year, turnover is nil, costs are nil, and the statement starts again. The balance sheet never resets. It carries forward, day after day, for the whole life of the company.
The join between them is a single number. Whatever the profit and loss account ends with, that figure is added to retained earnings in the balance sheet, and the P&L is wiped clean. In double entry terms this is the year end closing process, and it is why a balance sheet balances at all.
So the two statements are not alternatives. The P&L explains the movement, and the balance sheet holds the position that the movement produced. Add the cash flow statement and you have the full picture, which matters because a business can post the £38,880 profit in our example and still be unable to pay a supplier. Profit is an accounting measurement. Cash is a fact. Where the two diverge, the answer is almost always in working capital.
Your Profit and Loss Account Is Not Your Tax Computation
A director looks at profit before tax of £48,000 and reasonably assumes HMRC will tax £48,000. Often it will not.
The profit and loss account is prepared under accounting standards. The corporation tax bill is calculated under tax law, and the two disagree on several points. Getting from one to the other means:
- Adding back depreciation, which is never allowable for tax.
- Deducting capital allowances instead, which follow their own rules and their own rates. The main pool writing down allowance fell from 18 to 14 per cent in April 2026, so this gap has widened.
- Adding back client entertaining, which is a genuine business cost and a disallowable one.
- Adjusting for a handful of other items, from certain legal fees to some provisions.
The result is called taxable profit, and it is a different number from the one on your P&L. Neither is wrong. They are answering different questions. This is also why "my accounts say I made £48,000 but my tax bill is based on £54,000" is a normal sentence rather than a mistake, and why the tax line in the accounts rarely equals 19 or 25 per cent of the profit above it.
What You File at Companies House, and What Changes in April 2028
Right now, most small UK companies do not file their profit and loss account at all.
Section 444 of the Companies Act 2006 lets a small company deliver just the balance sheet to Companies House and leave out the profit and loss account, the directors' report and the related notes. The accountancy profession calls this filleting, which is exactly what it sounds like. The full accounts still get prepared, and shareholders and HMRC still see everything. The public register only gets the skeleton.
That is why you can look up a competitor on Companies House and find out what they own but not what they sell. It applies to a lot of companies, because the size thresholds rose sharply for periods beginning on or after 6 April 2025. A company is small if it meets two of three tests: turnover not more than £15m, balance sheet total not more than £7.5m, and not more than 50 employees. Micro-entities sit further down again, at £1m, £500,000 and 10 employees.
This is changing, and most of what is written about it online is now out of date.
The Economic Crime and Corporate Transparency Act 2023 removed the filleting option. Small companies and micro-entities will have to file a profit and loss account, and abridged accounts disappear entirely. All accounts will have to be filed in iXBRL through commercial software, with the web and paper filing routes closed.
The original commencement date was April 2027, and that is still the date on a great many accountancy blog posts, law firm briefings and AI generated summaries. It is wrong. Companies House paused the change in January 2026 and has now confirmed the new date as April 2028, with a transition period of one full accounting year plus nine months.
The second correction matters more. The scare story attached to this reform was always "your turnover and margins are about to become public". Companies House has confirmed that small companies and micro-entities will be able to opt out of publishing the profit and loss account on the public register. The information still goes to Companies House, and law enforcement and HMRC can still see it. Your competitors, on current policy, cannot.
Our view is that the reform is now a compliance change rather than a commercial one, and it has been widely oversold. The genuine work is the move to software only iXBRL filing, which affects every company that currently uses the Companies House web service, including the dormant and near dormant companies whose directors file the accounts themselves each year alongside the confirmation statement. That is a practical problem worth solving in 2027. The privacy question mostly is not, provided the opt-out arrives as described. We will say plainly that the detail of the opt-out has not been published yet, and we would not make a structural decision about a business on the strength of a policy statement.
Why Your Operating Profit Is About to Rise Without Anything Improving
There is a second change to the profit and loss account already in progress, and it is getting far less attention than the filing reform despite being live right now.
The FRC's periodic review amendments to FRS 102 apply to accounting periods beginning on or after 1 January 2026. Two of them reshape the P&L.
Revenue recognition moves to a five step model, closer to the international standard, which changes the timing of turnover for businesses with bundled contracts, staged delivery or long term arrangements.
The bigger one is leases. The old split between operating and finance leases has gone for lessees. Most leases now go on the balance sheet as a right of use asset with a matching liability. And that pulls the rent out of your operating costs.
Take a company paying £60,000 a year to rent premises on a five year lease. Under the old rules, £60,000 sat in administrative expenses and that was the end of it. Under the new rules the company recognises a right of use asset of roughly £268,000, depreciates it at about £53,600 a year, and charges interest of about £12,500 in the first year.
The effect on the statement:
| Measure | Old treatment | New treatment | Movement |
|---|---|---|---|
| Rent in operating costs | £60,000 | nil | gone |
| Depreciation | nil | £53,600 | up |
| Interest | nil | £12,500 | up |
| EBITDA | baseline | baseline + £60,000 | up sharply |
| Operating profit | baseline | baseline + £6,400 | up |
| Profit before tax | baseline | baseline less £6,080 | down |
Nothing about the business changed. The company occupies the same building on the same terms and pays the same £60,000. Over the full lease the total charge is broadly the same. What moved is where the cost sits and when it lands, with more expense in the early years and less later.
This is where we would push back on how the change is being presented. A great deal of commentary is describing higher EBITDA as an improvement. It is not an improvement, it is a reclassification, and treating it as one is how businesses talk themselves into decisions.
The practical risk is in agreements that reference these numbers without defining them. Bank covenants set to a multiple of EBITDA. Earn outs on a business sale priced off operating profit. Bonus schemes tied to a profit figure. Every one of those was written against the old definitions, and unless the drafting anticipated a change in accounting standards, the goalposts have moved. If you are valuing or buying a business over the next two years, comparing a set of 2027 accounts against 2025 comparatives without adjusting for this is a mistake that runs into real money. Our guide to business valuation explains why the multiple you apply is only as good as the earnings figure underneath it.
Check the definitions in your facility letter and your shareholder agreements now, while the first affected year ends are still being prepared.
Red Flags We Look For in a Profit and Loss Account
After enough years reading small company accounts, certain patterns stand out. These are the ones that make us ask questions.
Turnover up, gross margin down. The most common bad news in small business, and the easiest to miss because the top line is going the right way. It means you are buying growth with price cuts or absorbing cost increases you have not passed on.
Administrative expenses growing faster than turnover. Overheads should be at least partly fixed. If they track sales upwards one for one, something is being miscoded, or you have quietly built a cost base that scales with revenue and gives you no operating leverage.
Other operating income doing heavy lifting. A profit that depends on grants, insurance recoveries or one off items is not a trading profit. Strip it out and look at what is left.
The exceptional item that appears every year. If it happens annually, it is not exceptional, it is a cost of doing business that somebody would prefer to present separately.
Healthy profit, no cash. Reliably means money is trapped in trade receivables or stock. Profit and cash are different measurements and only one of them pays wages.
Round numbers everywhere. Real trading produces untidy figures. A P&L full of clean thousands usually means estimates have been posted and never revisited, which means the trial balance has not been properly reconciled.
Our View
The profit and loss account has a reputation problem. It is treated as a compliance artefact, something an accountant produces months after the year end so a tax return can be filed. Used that way it is close to worthless, because by the time you read it, every decision it might have informed has already been made.
The businesses that get value from it read one every month. Not a perfect one, and not an audited one. A rough monthly P&L with sensible cut off and consistent coding will tell you your gross margin is slipping in June, which is a problem you can still fix. The statutory version tells you the same thing the following March, which is a post mortem. That difference is the whole argument for management accounting, and it is the single highest return change most small companies can make to how they use their numbers.
Two things are worth holding onto from the changes above. The April 2028 filing reform is real but has been oversold, and anyone still telling you your accounts go public in April 2027 has not checked since January. The FRS 102 lease change is live now, it is quietly inflating operating profit and EBITDA across the country, and it is the one more likely to cost somebody money in the next two years, because it moves numbers that other contracts depend on.
One last observation about small company accounts specifically. In an owner managed business the bottom line is partly a decision rather than a measurement. Directors' salary and employer's National Insurance sit above the profit line as costs. Dividends sit below it as a distribution. Two identical companies, trading identically, can report very different profits purely because of how the owners chose to pay themselves. We explain the mechanics in directors' remuneration, but the reading habit that follows from it is this: when you assess an owner managed business, including your own, look at operating profit before directors' pay. That is the number that describes the trade. Everything below it describes a tax decision.
How IAK Can Help
We prepare statutory accounts and the profit and loss account behind them for limited companies and sole traders across North London, in the format that suits the business rather than whatever the software defaulted to. That includes getting ready for the April 2028 filing changes and working through what the FRS 102 amendments do to your reported operating profit and any covenants tied to it.
If your year end figures are the only numbers you see, our management reporting service produces a monthly P&L you can act on, and our bookkeeping and Xero teams make sure the coding underneath it is consistent enough to trust. On the tax side, our tax planning work is largely about the gap between accounting profit and taxable profit, and where that gap can legitimately be widened.
Not sure what you actually need? What does an accountant do is an honest answer, and you can always contact us for a free consultation.
Sources
- Companies Act 2006, section 396, on the requirement for directors to prepare a profit and loss account.
- Companies Act 2006, section 444, on the small company filing exemption that allows the profit and loss account to be omitted.
- The Small Companies and Groups (Accounts and Directors' Report) Regulations 2008, Schedule 1, for the statutory profit and loss account formats and the line items in Format 1 and Format 2.
- FRS 102, Financial Reporting Council, on the income statement and statement of comprehensive income, and for the periodic review amendments effective for periods beginning on or after 1 January 2026.
- Companies House to bring in changes to accounts filing from April 2028, GOV.UK, on the April 2028 commencement, the profit and loss filing requirement, the opt out from publication, iXBRL software only filing and the removal of abridged accounts.
- UK company size thresholds have increased, ICAEW, for the small company and micro-entity thresholds applying to periods beginning on or after 6 April 2025.
- Corporation Tax rates and reliefs, GOV.UK, for the 19 per cent small profits rate and the £50,000 lower limit used in the worked example.