What is Taxable Profit and How Is It Calculated?

1. What is taxable profit?

Taxable profit is the figure HMRC uses to work out how much tax you owe… and it is almost never the same number as the profit in your accounts.

When you prepare your accounts, you calculate net profit by subtracting your total expenses from your total income.

That is standard bookkeeping.

But HMRC does not use that figure directly: it applies a separate set of rules to adjust that number – adding some things back, removing others – to arrive at a figure it considers taxable.

Paying tax on the wrong number is a costly  mistake. If you treat your net profit as your taxable profit, you might underpay (and face penalties later) or overpay (and miss out on legitimate reliefs).

2. How to calculate your taxable profit?

The calculation moves in a clear sequence.

Start with the profit shown in your accounts, then apply three types of adjustment.

Step one: Add back disallowable expenses

Some expenses reduce your net profit in your accounts but are not permitted under tax rules.

Common examples:

• client entertaining
• depreciation on assets
• any costs with a personal element that has not been correctly apportioned.

These need to be added back to your net profit.

Step two: Deduct capital allowances

If you have bought assets for your business (equipment, technology, camera gear, design hardware), HMRC does not let you deduct depreciation.

HMRC has its own system called capital allowances.

The Annual Investment Allowance (AIA) lets most businesses deduct the full cost of qualifying assets in the year of purchase, which can reduce your taxable profit.

Step three: Apply any carried-forward losses

If your business made a loss in a previous tax year that you have not yet used, you can apply it against your current profit.

This reduces your taxable profit and, by extension, your tax liability for the year.

The number you are left with after these three adjustments is your taxable profit.

3. Taxable profit for sole traders and limited companies

The calculation method is similar for both structures, but what happens to that figure next is very different.

Sole traders and freelancers

Your taxable profit is treated as personal income.

You add it to any other income sources for the year (e.g. employment income, rental income, dividends) to get your total income.

Then you deduct the personal allowance (£12,570 for 2026/27) and any eligible reliefs to arrive at your taxable income.

That is the figure income tax rates are applied to.

Note: Check our take-home pay calculator, and calculate your taxable profit as a sole trader.

Limited companies

For a limited company, taxable profit is the starting point for your Corporation Tax bill, not your personal tax.

The company pays Corporation tax on its taxable profit at 19% (if profits are £50,000 or below) or 25% (if profits exceed £250,000).

A tapered rate applies between those thresholds through the Marginal Relief scheme.

4. What reduces your taxable profit?

There are different ways to reduce your taxable profit. Some of them simply come down to claiming what you are entitled to.

Allowable expenses

Allowable expenses are the most straightforward rule.

Any cost that is wholly and exclusively for business purposes can be deducted from your income before you calculate profit.

For creatives, this regularly includes:

• software subscriptions
• professional memberships
• home office costs (as a proportion of actual usage)
• travel to client sites
• specialist equipment.

Capital allowances

These work similarly but apply specifically to asset purchases.

If you bought a new laptop, camera, or studio equipment, you can likely deduct the full cost in the year of purchase using the Annual Investment Allowance rather than spreading it over the asset’s life.

Pension contributions

Pension contributions also reduce your taxable profit if you operate as a sole trader, because they are treated as an allowable deduction.

For limited company directors, pension contributions made by the company are a deductible business expense.

Mixed-use costs

The one area to be careful about is mixed-use costs.

If you use a phone or laptop for both personal and business purposes, you can only claim the business proportion.

HMRC does not accept broad estimates: the split needs to be reasonable and defensible.

5. Taxable profit vs related terms

Some terms come up naturally in conversations and it’s easy to confuse.

• Net profit: is your income minus all your expenses as recorded in your accounts. It does not account for tax rules.
• Taxable profit: is your net profit after making the tax adjustments described above (adding back disallowable costs and deducting capital allowances and losses). This is the figure HMRC works from.
• Taxable income: is a personal tax concept. It is the figure you actually pay income tax on once you have deducted your personal allowance and any other reliefs from your total income (which includes your taxable profit as a component).
• Turnover: is your total revenue before any deductions. No tax is calculated directly on turnover.

6. Getting your business expenses right

Taxable profit is a precise calculation, not an estimate, and the difference between getting it right and getting it wrong can be huge… either in terms of the tax you overpay or the penalties you accumulate for underpaying.

For creative businesses, the calculation carries extra complexity. Income can be lumpy. Expenses are often mixed-use. Asset purchases, project-based costs, and royalties all behave differently under tax rules than they do in a standard set of accounts.

WallsMan Creative works exclusively with people in the creative sector – from freelance designers and filmmakers to studio directors and agency owners. If you want to be confident your taxable profit figure is accurate, your reliefs are fully claimed, and your tax bill is as low as it legally should be, we can help.