Trading Income for Companies

Key facts

Trading income is the profit a company earns from its commercial activities — buying and selling goods or providing services.
HMRC applies the badges of trade to distinguish trading from investment activity.
Trading profits are computed on an accounts-basis and then adjusted for tax purposes.
Financial companies (banks, insurers) have additional specialist rules for calculating trading income.

What Constitutes “Trading”?

For Corporation Tax purposes, a trade is any commercial activity carried on with a view to profit. This includes manufacturing, retailing, wholesaling, and providing professional or other services.^[1]

The distinction between trading and non-trading activity matters because:

Trading profits are taxed under the trading income rules
Non-trading receipts (e.g. investment income, property rental) are taxed under separate rules
Trading losses can be offset more flexibly than non-trading losses
Certain reliefs (e.g. R&D relief) only apply to trading activities

The Badges of Trade

Where it is unclear whether an activity constitutes a trade, HMRC applies the badges of trade — a set of indicators developed through case law. No single badge is conclusive; HMRC considers the overall picture.^[2]

Badge	Indicator of Trading
Profit-seeking motive	The activity is carried on with the intention of making a profit
Number of transactions	Repeated similar transactions suggest trading rather than a one-off investment
Nature of the asset	Assets that do not produce income or personal enjoyment are more likely to be trading stock
Existence of similar trading transactions	If the person already trades in similar assets, a related transaction is more likely trading
Modifications to the asset	Work done to make an asset more marketable suggests trading intent
Method of acquisition	Assets bought specifically for resale are more likely trading stock
Source of finance	Borrowing to fund a purchase that is quickly resold suggests trading
Period of ownership	Short ownership before sale suggests trading; long-term holding suggests investment
Method of sale	Active marketing and sales effort is indicative of trading

Tip: Most limited companies are clearly trading — the badges of trade are more commonly relevant when a company buys and sells assets (e.g. property) and the question is whether the profits are trading income or chargeable gains.

Calculating Trading Profits

Trading profits for Corporation Tax are calculated as follows:^[3]

Start with the accounting profit from the company’s profit and loss account for the accounting period
Add back disallowable expenses (depreciation, entertaining, fines, capital expenditure, etc.)
Deduct non-trading income that has been included in the accounts (investment income, property income, dividends received)
Deduct capital allowances to replace accounting depreciation
Apply any trading reliefs (R&D enhanced deductions, etc.)

The result is the company’s adjusted trading profit, which forms part of the total taxable profit reported on the CT600. CT600 software builds this computation for you step by step.

Special Rules for Financial Companies

Banks, insurance companies, and other financial institutions are subject to additional or modified rules when calculating trading income:^[4]

Banks and building societies — trading profits include interest income and are calculated under the loan relationships and derivative contracts rules
Insurance companies — profits are split between trading (basic life assurance and general annuity business) and investment (policyholder returns)
Investment companies — companies whose business consists wholly or mainly of making investments are not treated as trading; their income is taxed as non-trading income

Investment companies deduct management expenses (the costs of managing investments) instead of trading expenses. These are deducted from total profits rather than from a specific income source.^[4]

Trading vs Investment: Why It Matters

The classification of income as “trading” vs “investment” has practical consequences:

Factor	Trading	Investment
Loss relief	Flexible: carry back, carry forward, group relief, set against total profits	More restricted: generally only set against income of the same type
R&D relief	Available on qualifying expenditure	Not available
Annual Investment Allowance	Available on plant & machinery used in the trade	Available but more limited in scope
Disposal of assets	Stock in trade — profits are trading income	Capital assets — gains are chargeable gains

Frequently Asked Questions

What is trading income for Corporation Tax?

Trading income is the profit a company earns from its commercial activities — buying and selling goods or providing services. It is computed from the accounting profit, adjusted for disallowable expenses and capital allowances.

What are the badges of trade?

The badges of trade are a set of indicators developed through case law that HMRC uses to determine whether an activity constitutes trading. They include profit-seeking motive, frequency of transactions, nature of the asset, and period of ownership.

Why does it matter if income is trading or non-trading?

Trading losses can be offset more flexibly (carry back, carry forward, group relief), and certain reliefs such as R&D tax relief only apply to trading activities. Non-trading income is taxed under separate, more restricted rules.

Is property development trading or investment income?

If the company buys and sells property as its main business, the profits are likely trading income. If it holds property long-term to earn rental income, the receipts are non-trading property income.

Sources

Business Income Manual: BIM20000 – Meaning of trade — HMRC
Business Income Manual: BIM20200 – Badges of trade — HMRC
Corporation Tax: trading profits and losses — GOV.UK
Company Taxation Manual: CTM01000 — HMRC