Company pre-trading expenses: what moves to day one
In this hypothetical, a company incorporated in 2018 starts trading on 1 November 2026. Its records hold a mix of earlier spending: launch advertising, utilities on the premises, a cost from 2019, equipment, stock and rent paid ahead for the months after opening. For Corporation Tax, only some of this is pre-trading expenditure. Qualifying revenue costs the company itself incurred within seven years before it started trading are treated as incurred on the day trading began. The rest go through their own rules. This covers a UK company starting its own trade. It does not cover sole traders, acquired businesses, R&D relief, property-development rules or how costs appear in the accounts.
Find the start date first
Everything depends on when the trade actually began. HMRC's Corporation Tax guidance says preliminary work, such as planning, negotiating and deciding whether to start, can happen before trading begins. No single event, such as incorporation or a first invoice, settles the date automatically. Record what the company was actually doing and when, and use that to support the commencement date.
The seven-year window runs back from that date. In the hypothetical, commencement on 1 November 2026 is assumed to be established. A cost incurred on 1 October 2019 is more than seven years earlier and does not enter the relief.
What the relief covers
HMRC's Business Income Manual describes the relief in section 61 of the Corporation Tax Act 2009. It applies to costs that would have been deductible had the company already been trading: revenue expenditure incurred for the trade, which still has to meet the wholly and exclusively test. Paying before opening is not enough on its own. Capital expenditure is outside the relief.
Two other categories stay out to prevent a double deduction. Stock bought in advance is dealt with under the ordinary stock rules. Where a prepayment covers a period after trading starts, the part already deductible in that later period does not also go into section 61.
The relief belongs to the person who incurred the cost and then starts the trade, and treats the cost as incurred on the first trading day. A founder's personal spending before incorporation does not become the company's pre-trading expenditure just by appearing in the company's books. Company costs connected with loan relationships have separate rules.
The hypothetical sorted
In this original hypothetical, the company spent £2,400 on pre-opening advertising and £1,200 on premises utilities during 2026, all wholly for the trade and otherwise allowable. It also has a similar £700 cost from 1 October 2019, equipment of £3,000, stock of £2,000 and £900 of rent relating entirely to occupation after opening. There are no other costs and no VAT issues.
Suppose the first period's taxable trading profit, worked out before this adjustment, is £24,000 and none of the £3,600 has already been deducted. The profit becomes £20,400.
Leaving the equipment, stock and rent out of section 61 does not mean they never get relief. Each goes to the rules that fit it, and each is claimed once.
| Item | Amount | Treatment |
|---|---|---|
| Advertising, 2026 | £2,400 | Section 61, treated as incurred 1 November 2026 |
| Utilities, 2026 | £1,200 | Section 61, treated as incurred 1 November 2026 |
| Similar cost, 1 October 2019 | £700 | Outside the seven-year window |
| Equipment | £3,000 | Its own capital treatment |
| Stock | £2,000 | Ordinary stock rules |
| Rent for post-opening occupation | £900 | The post-start period it relates to |
| Section 61 total | £3,600 | Deducted once in the first trading computation |
What to keep
If a founder paid launch costs personally, settle that question on its own before any of it goes into the company's figures.
- Evidence of the commencement date and the activities that support it
- For each pre-trading cost: the original invoice, which entity incurred it, the date, the business purpose and the period it serves
- A classification for every item: revenue, capital, stock, prepayment or loan-related
- A marker on anything already deducted, so the first trading computation includes it only once
Sources and context, checked :