Taxable profit

Definition

Taxable profit takes your accounting profit and adjusts it for tax purposes: adding back disallowed costs, replacing depreciation with capital allowances, and applying reliefs. Corporation tax is charged on this figure, not on the profit shown in your statutory accounts.

In plain terms

It is why your tax bill rarely equals a flat percentage of the profit you see in your accounts — the taxable figure is a recalculated version.

Why it matters for your company

Understanding the adjustments helps you plan and avoid surprises. See corporation tax explained.

In practice

For a UK limited company, the gap between accounting profit and taxable profit usually shows up first at year-end, when the accountant works through the corporation tax computation alongside the statutory accounts. Depreciation charged in the accounts is added back and replaced with capital allowances calculated under tax rules, and certain costs — client entertaining is a common example — are disallowed even though they sat quite properly in the profit and loss account.

The practical effect is that two companies with identical accounting profit can end up with different taxable profit, simply because their mix of capital spending, allowable reliefs and disallowed costs differs. Directors who only track the accounting figure through the year can be caught out by a tax computation that lands somewhere else entirely once the adjustments are applied.

How lenders read it

Lenders looking at a set of accounts tend to treat taxable profit as a secondary figure rather than the headline number — it tells them how the tax charge was arrived at, but it is not itself a measure of trading performance or affordability. Underwriting typically leans more on operating cash flow, turnover trends and the accounting profit figures shown in the filed accounts, alongside guidance such as corporation tax explained.

Where taxable profit becomes relevant is in cross-checking: a company with strong accounting profit but a heavily adjusted-down taxable profit, for example through large capital allowances claims, may prompt a lender to ask what is driving the difference, simply to understand the shape of the underlying business rather than to penalise it. Related concepts such as marginal relief can also affect how the resulting tax charge is calculated.