Trading profit: what it means, how to work it out, and the tax on it

Short answer: “trading profit” means one of three things, depending on who is talking. For a UK sole trader or partner, it is the taxable profit from the business that goes on the Self Assessment return: the net profit in your accounts, plus costs HMRC does not allow (depreciation, client entertainment, fines, the private share of mixed costs), less capital allowances. Income tax and Class 4 National Insurance are charged on it. For a company, it is profit from its normal business before interest and tax, which is the same as operating profit. In an old-style trading account, it is sales less cost of sales, which is gross profit. None of them is the amount you can take out of the business, and none is the cash in the bank. Worked examples of each are below.

The three meanings side by side

Who uses it	What “trading profit” means	How to work it out
HMRC and UK sole traders or partners	Taxable profit from your trade	Net profit + disallowable costs − capital allowances (or income − £1,000 trading allowance)
Companies, lenders, buyers of a business	Profit from normal trading, before interest and tax	Gross profit − overheads (including depreciation); leave out interest and one-off items
Bookkeeping textbooks (the “trading account”)	Gross profit	Sales − cost of sales

If someone asks for your trading profit, ask which one they mean. A mortgage lender or an accountant preparing a tax return wants the first; someone valuing a company usually wants the second.

Sole trader: from Xero’s net profit to taxable trading profit

Your Xero Profit and Loss ends in Net Profit. For a sole trader that is before income tax, because the tax is personal and is not a business expense, and before anything you took out, because drawings are not an expense either. HMRC then asks for a few adjustments to get your taxable trading profit:

• Add back depreciation. It is not allowed for tax. Capital allowances replace it.
• Add back disallowable costs: client and customer entertainment, fines and penalties, and anything personal that went through the business.
• Add back the private share of mixed costs, such as the personal use of a van or a phone, if the full cost went through the books.
• Take off capital allowances for equipment, tools and vehicles bought for the business. Most small businesses claim the whole cost of equipment in the year they buy it under the Annual Investment Allowance. Cars work differently.

A landlord or mortgage lender reads the same net profit as your income; the profit and loss statement for self-employed sole traders guide shows what to put on one and what they usually ask for with it.

If your business income is small, you can use the £1,000 trading allowance instead of claiming actual expenses and capital allowances, but not both. Income under £1,000 a year does not need reporting at all.

A worked example: a painter and decorator in Leeds

These figures are made up. Sam is a sole trader and not VAT registered. This is the Xero Profit and Loss for the tax year 6 April 2025 to 5 April 2026, and Sam has no other income.

Xero Profit and Loss	£
Sales	64,000
Materials	(9,800)
Van running costs	(4,000)
Phone, insurance and accountant	(2,200)
Depreciation of tools	(2,100)
Client entertainment	(350)
Parking fine	(80)
Other running costs	(7,070)
Net Profit	38,400

Brackets are costs. Sam drives the van privately about a quarter of the time. The van was bought three years ago and its allowances were claimed then. This year Sam bought ladders and spraying kit for £1,800.

From net profit to trading profit	£
Net Profit from Xero	38,400
Add back depreciation	2,100
Add back client entertainment	350
Add back the parking fine	80
Add back private use of the van (25% of 4,000)	1,000
Less capital allowances (Annual Investment Allowance on the £1,800 of equipment)	(1,800)
Taxable trading profit	40,130

For 2025/26 (the rates are the same in 2026/27) the personal allowance is £12,570, basic rate income tax is 20% up to £50,270, and Class 4 National Insurance is 6% on profits between £12,570 and £50,270, then 2% above that:

• Income tax: (40,130 − 12,570) × 20% = 27,560 × 20% = £5,512.00
• Class 4 National Insurance: 27,560 × 6% = £1,653.60
• Total: £7,165.60, about 17.9% of the trading profit

The return and the payment are due by 31 January 2027. Because the bill is over £1,000, HMRC also asks for payments on account towards next year: two payments of half this year’s bill, £3,582.80 each, due 31 January and 31 July 2027. So in Sam’s first year with payments on account, the January payment is 7,165.60 + 3,582.80 = £10,748.40. That January bill is a common cash shock for sole traders. Putting aside about 18 to 20% of each month’s profit in a separate account avoids it; how much can I pay myself? shows how to set drawings so the tax money is still there.

The adjustments only raised the taxable profit by £1,730 here. Larger gaps usually come from a big equipment purchase (which lowers trading profit sharply in that year) or from personal costs running through the business.

If the adjusted figure comes out below zero, that is a trading loss, and it is not wasted. A sole trader can set it against other income of the same or the previous tax year (sideways relief, capped at the greater of £50,000 or 25% of income), carry it forward against later profits of the same trade, or, in the first four years of trading, carry it back three years. If a loss year is coming, you can also apply to reduce your payments on account. The net operating loss guide covers the options for sole traders and companies, with worked examples.

Company: trading profit is operating profit

For a limited company, trading profit is the profit from its normal activities before interest and tax: gross profit − overheads, with depreciation included as an overhead. Interest paid, interest received and one-off gains (such as selling a building) sit below it. It is the same figure as operating profit, and close to EBIT. The operating profit guide covers the formula and the margins to compare, and the free EBITDA calculator works out EBIT and EBITDA from your own figures.

A worked example: a joinery company

A made-up UK limited company, year to 31 March 2026, no associated companies:

	£
Sales	750,000
Cost of sales	(450,000)
Gross profit	300,000
Overheads, including £12,000 depreciation	(175,000)
Trading (operating) profit	125,000
Interest on a loan	(5,000)
Profit before tax	120,000

Corporation tax is worked out on taxable profit, not on the accounts profit. Add back the £12,000 of depreciation and £1,500 of client entertainment, take off £20,000 of capital allowances, and the taxable profit is 120,000 + 12,000 + 1,500 − 20,000 = £113,500.

Corporation tax is 19% on profits up to £50,000 and 25% above £250,000. In between, as here, it is 25% less marginal relief:

• 113,500 × 25% = 28,375.00
• Marginal relief: (250,000 − 113,500) × 3/200 = 136,500 × 0.015 = 2,047.50
• Corporation tax: 28,375.00 − 2,047.50 = £26,327.50, about 23.2% of taxable profit

The free corporation tax calculator does this sum for any taxable profit, including associated companies and a short accounting period.

For a company this size the tax is due 9 months and a day after the year end, so 1 January 2027 for a March year end. In Xero, the tax usually only appears in the Profit and Loss once your accountant posts the year-end journal, so during the year the Net Profit line is before tax. Profit before tax compares the same tax in Australia and New Zealand and shows how much to set aside each month.

Trading account: trading profit as gross profit

Older bookkeeping, and many exam questions, split the profit and loss account into two parts: a trading account (sales less cost of sales, giving gross profit, which was often labelled “gross trading profit”) and a profit and loss account for the overheads below it (today the profit and loss account means the whole report). In the joinery company above, the trading account is 750,000 − 450,000 = £300,000. Gross profit vs net profit explains what each one tells you and the margins to watch.

Australia and New Zealand

“Trading profit” is not a tax term in either country. The ATO and Inland Revenue ask for the net profit or net income from business, worked out with their own rules for which costs are deductible, and the ATO uses “trading stock” to mean inventory. In everyday use, an Australian or New Zealand accountant saying “trading profit” usually means operating profit, as for a UK company. Company tax is 25% for an Australian base rate entity and 28% in New Zealand; sole traders pay personal income tax on the business profit.

Where to find it in Xero

Run Accounting › Reports › Profit and Loss for the period. Xero’s standard layout shows a Trading Income section at the top. That heading means your sales, not a profit. Below it come Cost of Sales, Gross Profit, Operating Expenses and Net Profit.

• For a sole trader’s tax figure, start from Net Profit and make the adjustments in the table above. Your accountant does this when preparing the return; Xero’s own tax tools (where available in your region and plan) also take net profit as the starting point.
• For a company’s trading profit, the standard layout goes straight from Gross Profit to Net Profit, so take Net Profit and add back interest paid (and take off any interest received or one-off income). If your accountant has set up a custom report layout, it may already have an operating profit subtotal.
• To compare years, run the report for the full year with the previous year as a comparison column. Xero annual report covers which year-end reports to run and what to check first, and how to read your Profit and Loss explains each section.

Menu names and labels change between Xero releases and regions, so search Xero Central for the report name if your screen differs.

Common questions

What is trading profit? For a UK sole trader or partner, it is the taxable profit from the business: net profit plus costs HMRC does not allow, less capital allowances. For a company, it is profit from normal business before interest and tax, the same as operating profit. In an old-style trading account, it is gross profit: sales less cost of sales.

Is trading profit the same as net profit? Not quite. A sole trader’s trading profit starts from net profit and adds back depreciation, entertainment, fines and private use, then takes off capital allowances. A company’s trading profit is before interest and tax, so it is usually higher than net profit.

Is trading profit before or after tax? Before. For a sole trader, income tax and Class 4 National Insurance are charged on the trading profit. For a company, corporation tax is worked out on the profit after interest, with its own tax adjustments.

How much tax do I pay on trading profit as a sole trader? For 2026/27, the first £12,570 is covered by the personal allowance if you have no other income. Above that, income tax is 20% up to £50,270 and Class 4 National Insurance is 6% on the same band, so 26% in total, with higher rates above £50,270. On £40,130 of trading profit that is about £7,166.

Are drawings taken off trading profit? No. Drawings are money the owner takes out of the business. They are not an expense, so they do not reduce profit or the tax on it. You are taxed on the trading profit whether you take it out or leave it in the bank.

What is the trading allowance? A £1,000 a year allowance for trading income. Income under £1,000 does not need to be reported. Above that, you can deduct either the £1,000 allowance or your actual expenses and capital allowances from your income, whichever gives the lower profit, but not both.

Know your profit before the tax return does

ReportPilot reads your Xero figures and sends a short plain-English email every Monday: how sales and profit compare with last month and the same month last year, the cash in the bank, and money owed to you that is past due. It asks Xero for read-only access, and there is a 14-day free trial with no card.