Statement of Profit and Loss Account: UK Small Business Guide

A statement of profit and loss account shows how much a business earned, what it spent and whether it made a profit or loss during a set period.

It is also commonly called a profit and loss statement, P&L or income statement.

The basic calculation is simple:

Income − costs and expenses = profit or loss

However, the final figure does not tell the whole story. A business can make a profit and still struggle with cash flow. The profit on a management report may also differ from the taxable profit that you report to HMRC.

For a small-business owner, a P&L becomes most useful when you review it regularly. It can show whether sales are growing, direct costs are rising, overheads are changing and profit margins are getting better or worse.

Quick Answer: What Is a Profit & Loss Statement?

A Profit & Loss statement, or P&L, summarises a business’s income and expenses over a set period. It shows whether the business made a profit or a loss.

Most P&Ls start with sales or turnover. They then subtract direct costs to show gross profit before deducting other business expenses.

You can prepare a P&L monthly, quarterly or annually. Reviewing it regularly can help you track profit, compare trading periods and spot rising costs.

Remember that profit is not the same as cash in the bank. The profit on your accounts may also differ from your final taxable profit.

What does a Profit & Loss statement show?
What are the main sections of a P&L?
What do turnover and sales mean?
What is cost of sales?
What is gross profit?
What are operating expenses?
What is net profit?
A simple Profit & Loss example
How to read a small-business P&L
Why profit is not the same as cash
Is P&L profit the same as taxable profit?
Cash basis versus traditional accounting
P&L versus balance sheet versus cash flow
Do small businesses need a P&L?
How often should you review your P&L?
Common Profit & Loss mistakes
What to do if your P&L looks wrong

What Does a Statement of Profit and Loss Account Show?

A statement of profit and loss account, also called a P&L or income statement, measures financial performance over a set period.

That period might cover:

one month
one quarter
six months
a financial year
another period that is useful to the business

In simple terms, the report helps answer one question:

Did the business earn more than it spent?

Your P&L does something different from your bank account. A bank balance tells you how much cash you have at that moment. A P&L shows the income and costs linked to business performance during a period.

For limited companies, GOV.UK explains that the statutory profit and loss account shows sales, running costs and the profit or loss made during the financial year.

What Are the Main Sections of a P&L?

The exact headings vary between businesses and accounting software. However, most small-business Profit & Loss statements contain similar sections.

P&L item	What it means	Question to ask
Turnover / sales	Income from normal trading	Are sales rising or falling?
Cost of sales / direct costs	Costs directly linked to what you sell	Are direct costs rising faster than sales?
Gross profit	Sales minus direct costs	Is the main trading activity profitable?
Overheads / operating expenses	General costs of running the business	Which costs are changing most?
Net profit / loss	What remains after relevant expenses	Is the business making an overall profit?

What Do Turnover and Sales Mean?

Turnover is the income your business earns from its normal trading activity before you deduct business costs.

Growing turnover can be a good sign, but higher sales do not always mean higher profit.

For example, sales might rise by 20% while the costs needed to generate those sales rise by 30%. In that situation, the business could become less profitable even though turnover increased.

That is why you should review sales alongside costs and profit margins.

What Is Cost of Sales?

Cost of sales covers costs that link directly to the goods or services you sell.

For example, a builder may include materials used on customer projects.

A retailer may include the cost of stock that customers bought.

Service businesses often have fewer direct costs, so their P&L may look different from the report for a retailer or construction business.

The important point is consistency. Use the same sensible categories from one period to the next so that comparisons remain useful.

What Is Gross Profit?

Gross profit broadly follows this calculation:

Sales − cost of sales = gross profit

This figure shows how much remains from sales before you subtract general overheads.

You can also calculate a gross profit margin:

Gross profit ÷ sales × 100

The percentage often tells you more than the cash figure alone.

For example, gross profit may rise because sales increased. However, a falling gross margin could show that direct costs are rising or that prices are too low.

Comparing the margin over several months can make these changes easier to spot.

What Are Operating Expenses?

Operating expenses cover many of the day-to-day costs of running the business.

Depending on the type of business, these may include:

wages
rent
insurance
telephone and internet costs
accounting and bookkeeping fees
advertising
software subscriptions
professional fees
travel
repairs
administration costs

Accurate bookkeeping matters here.

If you put similar transactions into different categories each month, comparisons become less useful. Consistent records make it easier to see whether a particular cost has genuinely increased.

What Is Net Profit?

Net profit is the amount left after the relevant business expenses have come off the income shown in the report.

A positive result means the business made an accounting profit for that period.

A negative result means the recorded costs were greater than the recorded income.

One loss-making month does not automatically mean the business has a serious problem. Seasonal trading, large one-off costs or investment can all affect a single period.

Instead, look at the reason for the loss and compare the result with earlier months.

A Simple Profit and Loss Example

Consider a small landscaping business with the following quarterly figures:

Sales: £45,000
Direct materials and subcontractor costs: £15,000
Gross profit: £30,000
Other operating expenses: £21,000
Net profit: £9,000

Its gross profit margin is:

£30,000 ÷ £45,000 × 100 = 66.7%

Its net profit margin is:

£9,000 ÷ £45,000 × 100 = 20%

Those percentages become more useful when you compare them with earlier periods.

Suppose sales rise during the next quarter, but the net margin falls from 20% to 12%. The owner should investigate the reason rather than focus only on the higher turnover.

How to Read a Small-Business P&L

Reading a P&L becomes easier when you follow the figures from top to bottom.

1. Compare Sales With Earlier Periods

Start by comparing current sales with the previous month, the same month last year or your budget.

Consider whether the change makes sense.

A seasonal business may expect large differences between months, while a business with steady trading may want to investigate sudden changes.

2. Review Gross Profit

Next, look at gross profit and gross margin.

If sales increased but gross profit failed to rise at a similar rate, investigate direct costs and pricing.

Possible causes include:

supplier price increases
excessive discounts
higher subcontractor costs
changes in the products or services sold

3. Check Major Expenses

Avoid looking only at the total expense figure.

Review individual categories and focus on meaningful changes.

A software subscription increasing by £20 may not need much attention. Subcontractor costs doubling without a clear reason deserves a closer look.

4. Review Net Profit Margin

Net profit shows what remains after costs.

The net profit margin can make comparisons easier because it shows profit as a percentage of sales.

Watching the percentage over time can help you spot changes that a single £ figure might hide.

5. Investigate Unusual Changes

A P&L can tell you where to investigate, but it may not explain the cause.

For example, higher vehicle costs could result from more business activity, fuel price changes or incorrect bookkeeping.

Check the transactions before you make decisions.

Why Profit Is Not the Same as Cash in the Bank

This is one of the most important points for a small-business owner to understand.

A profitable business can still run short of cash.

Under traditional accounting, for example, a business may record sales before customers pay their invoices. HMRC explains that traditional accounting and cash-basis accounting recognise income and expenses at different times.

Other transactions may also reduce cash without appearing as a normal P&L expense in the same way.

Examples include:

repaying the capital part of a loan
buying certain business assets
taking drawings as a sole trader
paying amounts that relate to an earlier accounting period

Cash can also increase without creating profit. A new business loan, for example, puts money into the bank but does not count as sales income.

For this reason, you should not use your P&L as a replacement for cash-flow monitoring.

Is P&L Profit the Same as Taxable Profit?

Not always.

A P&L gives you an accounting result. Tax rules then determine how you calculate taxable profit.

For sole traders, HMRC allows qualifying business expenses when calculating taxable profit. Personal spending and owner drawings do not count as allowable business expenses simply because money left the business bank account.

Other tax adjustments can also change the final figure.

As a result, you should not assume that the net profit shown on a monthly management P&L is automatically the amount on which HMRC will calculate tax.

Cash Basis Versus Traditional Accounting

The accounting method can affect when income and expenses appear.

For UK sole traders and eligible partnerships, cash basis has been the default tax accounting method since the 2024/25 tax year, unless the business opts out or cannot use it.

Cash Basis

Under cash basis, you generally record income when you receive the money.

You normally record expenses when you pay them.

This method can make the timing of income and costs easier to understand for smaller businesses.

Traditional Accounting

Traditional accounting normally records income when the business earns it and expenses when they arise.

That means unpaid customer invoices, supplier bills and year-end adjustments may affect the figures.

If you use accounting software, check which reporting method your P&L uses before you compare it with your tax return or year-end accounts.

P&L Versus Balance Sheet Versus Cash Flow

These reports answer different questions.

Report	Main question	What it covers
Profit & Loss	Did we make a profit?	Income and expenses over a period
Balance sheet	What do we own and owe?	Assets, liabilities and equity at a set date
Cash flow	Where did the cash go?	Cash movements over a period

A P&L gives you only part of the financial picture.

For example, a business may report strong profit while customers owe large unpaid invoices. Another business might have plenty of cash because it recently took out a loan even though its normal trading activity is making a loss.

Reviewing the reports together gives you a clearer view. For more detail, read our balance sheet guide for small-business owners.

Do Small Businesses Need a Profit & Loss Statement?

The answer depends partly on the business structure.

Sole Traders

HMRC requires self-employed people to keep records of their business income and expenses so they can work out their profit or loss for Self Assessment.

A sole trader does not necessarily need to prepare the same type of statutory P&L as a limited company.

However, a clear Profit & Loss report can make the bookkeeping easier to understand and help the owner monitor performance throughout the year.

Limited Companies

Limited companies prepare statutory annual accounts from their financial records.

GOV.UK states that statutory accounts include a profit and loss account, along with a balance sheet and other required information.

Companies House has also announced changes that will take effect from April 2028.

From that point, small companies and micro-entities will need to file Profit & Loss accounts with Companies House. They will have an option to stop Companies House publishing that information on the public register.

These April 2028 reforms are future changes. They do not describe the current filing rules in August 2026.

How Often Should You Review Your P&L?

For many small businesses, a monthly review works well.

Monthly reports can help you spot trends without waiting until the end of the year. Our monthly bookkeeping checklist can help you keep the underlying records organised.

A simple review might include:

current sales compared with the previous month
sales compared with the same month last year
gross profit margin
major expense categories
net profit margin
year-to-date results

Seasonal businesses should use comparisons carefully.

For example, comparing December with November may tell you less than comparing this December with the previous December.

Choose comparisons that make sense for the way your business trades.

Common Profit and Loss Mistakes

Small-business owners often make a few common mistakes when reading a P&L.

Confusing Turnover With Profit

High sales do not guarantee strong profit.

Always look at the costs needed to generate those sales.

Treating the Bank Balance as Profit

Cash and profit measure different things.

Check your P&L and cash position separately.

Ignoring Profit Margins

The £ value of profit can increase while the percentage margin falls.

Track both figures.

Using Inconsistent Categories

Changing expense categories from month to month makes comparisons harder.

Keep your bookkeeping approach consistent.

Assuming Accounting Profit Equals Taxable Profit

Tax rules may require adjustments before you reach taxable profit.

Use the P&L as a starting point rather than an automatic tax calculation.

Looking at One Month in Isolation

One unusual month may give a misleading picture.

Compare several periods and look for trends.

What to Do If Your P&L Does Not Look Right

If your P&L contains figures you do not recognise, work back through the bookkeeping before changing anything.

Check:

whether you reconciled all business bank accounts
whether the records contain duplicate transactions
whether any income is missing
whether you used the correct expense categories
whether personal spending appears in the business records
whether you selected the correct report dates
whether the report uses cash basis or traditional accounting
whether year-end accounting adjustments affect the figures

Accurate records make these checks much easier.

Regular bookkeeping also reduces the risk of discovering months of errors shortly before a tax return or accounts deadline.

Need Clearer Profit & Loss Reporting?

Real Key Accountancy supports sole traders and small businesses with bookkeeping, reconciliation and financial reporting. See our bookkeeping services in Wolverhampton.

If your current P&L is difficult to understand, or the bookkeeping behind it needs attention, you can discuss your records, transaction volume and reporting needs before choosing the right level of support.

Conclusion

A profit and loss statement for a small business shows whether the business made a profit or loss during a set period.

Do not focus only on the final figure.

Review turnover, direct costs, gross margin, overheads and net profit together. Compare the figures over time and investigate any unexpected changes.

Most importantly, remember that profit does not automatically equal cash in the bank or taxable profit.

When accurate bookkeeping supports the report, a monthly P&L becomes much more than an accounting document. It becomes a practical tool for understanding and running the business.

This article provides general information and does not constitute personalised accounting, tax, legal or financial advice. Tax treatment and reporting requirements depend on individual circumstances, and rules can change. Check current HMRC guidance or seek professional advice where necessary.

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Frequently Asked Questions

Everything you need to know about our bookkeeping services and how we can support your business.

What is a Profit & Loss statement in simple terms?

A Profit & Loss statement shows how much a business earned and spent during a particular period. Income appears near the top, relevant costs and expenses are deducted, and the report finishes with the resulting profit or loss. It may also be called a P&L, profit and loss account or income statement.

Is a P&L the same as an income statement?

In normal small-business usage, yes. “Profit & Loss statement”, “P&L”, “profit and loss account” and “income statement” are commonly used for the report showing income, expenses and the resulting profit or loss over a particular period. The terminology may differ between software, accounting frameworks and individual accountants.

Is turnover the same as profit?

No. Turnover usually refers to sales income before deducting the costs of running the business. Profit is what remains after the relevant costs and expenses have been deducted. A business can therefore have high turnover but relatively low profit if its margins are small or expenses are high.

What is gross profit?

Gross profit is generally sales minus the direct cost of generating those sales. For a retailer, for example, the cost of the stock sold might form part of cost of sales. Gross profit is calculated before general overheads such as administration or other operating expenses are deducted.

What is net profit?

Net profit is the amount remaining after the relevant expenses shown on the P&L have been deducted. The precise presentation depends on the type of accounts and accounting basis being used. Business owners should not automatically assume the net accounting profit is identical to taxable profit.

Why is my profit higher than my bank balance?

Profit and cash measure different things. Depending on the accounting basis, sales might be included before a customer has paid. Cash can also be used for loan repayments, asset purchases or owner withdrawals. A P&L should therefore be considered alongside your bank position and, where appropriate, cash-flow and balance-sheet information.

Can I make a profit but have no cash?

Yes. A business can be profitable while short of cash. For example, customers may owe the business money, stock may have been purchased in advance, or cash may have been used to repay borrowing. Profitability and liquidity are related but separate aspects of financial health.

Does a sole trader need a Profit & Loss statement?

A sole trader must keep adequate records of business income and expenses for Self Assessment. HMRC says those records are needed to work out the business's profit or loss. A formal statutory P&L in the same format as limited-company accounts is not necessarily required, but a P&L is a useful way to summarise those records.

Does a limited company need a Profit & Loss account?

Limited-company statutory accounts include a Profit & Loss account showing sales, running costs and the profit or loss for the financial year, subject to the relevant accounting and filing rules. GOV.UK also explains that statutory accounts must meet applicable accounting standards.

Do small companies currently file their P&L at Companies House?

The filing position depends on the company's size and applicable accounts regime. As of August 2026, the April 2028 reforms have not yet taken effect. Companies House says that from April 2028 small companies and micro-entities will have to file P&L accounts, with an option to prevent their publication on the public register.

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