A shareholder loan has been repaid. Ownership is split equally between two investors. Should the company now qualify for a lower corporation tax bill?
Possibly. Repayment can remove a basis on which companies were associated for corporation tax purposes. But it does not automatically end the association or create entitlement to marginal relief.
The answer depends on three things: who controls the company after repayment, when that change occurred, and the company’s profits for the relevant accounting period.
For owners and finance teams, this is worth reviewing before the next tax computation is finalised. Carrying forward last year’s associated company count can produce the wrong result when funding or ownership arrangements have changed.
Why associated companies affect your tax bill
For an eligible UK resident company with a 12-month accounting period and no associated companies, the standard corporation tax framework is:
| Profit level | Treatment |
|---|---|
| Up to £50,000 | 19% small profits rate |
| Between £50,000 and £250,000 | 25% less marginal relief |
| £250,000 or more | 25%, with no marginal relief |
These thresholds use augmented profits: broadly, taxable total profits plus certain exempt distributions received. They are not simply the profit shown in the accounts. Close investment holding companies cannot claim the small profits rate or marginal relief.
The £50,000 and £250,000 limits are divided by the number of associated companies including the company itself. With three other associated companies, the limits become £12,500 and £62,500. Short accounting periods reduce the limits further.
Having associated companies does not automatically mean paying 25%. It reduces the profit range within which a lower effective rate is available.
A 50% shareholder does not automatically control the company
Under section 18E of the Corporation Tax Act 2010, companies are associated where one controls the other, or both are controlled by the same person or persons. The test can extend beyond the companies included in consolidated accounts.
Exactly 50% of ordinary shares with equal rights does not, by itself, give one shareholder control. The assessment also considers voting power, rights to income and assets, and the ability to exercise or acquire control.
Different share classes, shareholder agreements or a casting vote at shareholder level can change the answer. Someone may also have rights attributed to them under the tax rules.
A common director is not enough on its own. Taking part in board decisions, advising management or influencing strategy is different from control at shareholder level. Asking only whether someone “influences company policy” can therefore lead to the wrong conclusion.
How a loan can create control despite equal share ownership
One control test looks at entitlement to more than half the assets available for distribution among the company’s participators. Participators can include loan creditors as well as shareholders.
This means a shareholder’s right to receive loan repayment can matter alongside their shareholding.
Consider a simplified example. Investor Ltd, a privately owned close company, owns 50% of Trading Ltd, with an independent investor owning the other 50%. Both have equal ordinary share rights. Investor Ltd has also lent Trading Ltd £40,000.
Assume £100,000 would be available on winding up after outside creditors and costs, but before repayment of that shareholder loan. There are no other participator loans or preferential rights.
| Recipient | Loan repayment | Share of remaining £60,000 | Total entitlement |
|---|---|---|---|
| Investor Ltd | £40,000 | £30,000 | £70,000 |
| Other investor | £0 | £30,000 | £30,000 |
Investor Ltd would receive 70% of the relevant assets. On these assumptions, the asset entitlement test gives it control even though it owns only 50% of the shares.
This does not mean every loan creates association. The lender’s rights, other creditors’ rights and the amounts available must be examined.
There is also a specific loan-creditor exclusion under CTA 2010 section 18I. Broadly, where association arises solely through loan-creditor control under the asset entitlement test, the exclusion can apply if there is no other past or present connection between the companies and either the lender is a company that is not close, or the lending relationship arose in the ordinary course of the lender’s business. It also covers qualifying cases where the same loan creditor controls two borrowing companies. The detailed conditions must be checked.
The exclusion does not apply to Investor Ltd in our example: it is a close company and its 50% shareholding creates a connection beyond the loan.
The same control issue can arise when an individual lends personally. Suppose an individual owns 50% of Trading Ltd, lends it money and separately owns 100% of another company. If the loan and share rights give that individual control of Trading Ltd under the asset entitlement test, the two companies can be associated through common control. Repayment may remove that basis, subject to the remaining rights and the timing rules below.
What changes when all the loans have been repaid?
If the loan creditor rights were the only reason Investor Ltd controlled Trading Ltd, full repayment can remove that basis of control. Equal rights to the remaining assets may then leave neither investor controlling Trading Ltd individually.
The review must still establish whether another route to control remains. For example, repayment will not remove control held through majority voting rights or a separate shareholder arrangement.
Nor does the absence of individual control settle every case. The same combination of people may control two companies together. HMRC applies a “minimum controlling combination” test: each person in that combination must be needed for it to control the company. A 50:50 company can therefore still be associated with another company controlled by the same pair of owners.
Family and other statutory associate relationships can also matter. Where control depends on attributing an associate’s rights, substantial commercial interdependence is relevant. Financial support, shared operations and economic links may need reviewing. However, commercial independence does not override control already established through a person’s own rights.
The repayment date can determine which year benefits
An associated company generally counts if it was associated at any time during the corporation tax accounting period. A repayment before the year end does not necessarily change the count for that period.
For example, assume the loan is the only basis of association and is repaid on 15 May 2025. The rows below show three alternative accounting-period scenarios, not consecutive periods for one company:
| Corporation tax accounting period | Result, assuming no other basis of association |
|---|---|
| 1 January to 31 December 2025 | Association existed during the period, so it still counts for that period |
| 1 June to 31 December 2025 | Repayment occurred before the period began, so the earlier loan does not itself create association in this period |
| 1 January to 31 December 2026 | The previous loan does not itself create association, provided control has not arisen again |
The second example is a short period, so its profit thresholds must also be reduced. Confirm the actual corporation tax accounting period rather than looking only at the date on the balance sheet.
How much difference could it make?
Assume an eligible UK trading company has £100,000 of taxable total profits for a 12-month period, no distributions increasing augmented profits, and no other tax adjustments affecting this comparison.
| Position | Upper profit limit | Marginal relief | Corporation tax |
|---|---|---|---|
| Three other associated companies | £62,500 | £0 | £25,000 |
| No associated companies | £250,000 | £2,250 | £22,750 |
In the second case, marginal relief is (£250,000 − £100,000) × 3/200 = £2,250. The difference is £2,250 for that accounting period.
This illustrates the effect of a properly established change in associated company status. It is not a promise that repaying a loan will produce that saving. Profits above the applicable upper limit receive no marginal relief even if the associated company count falls.
What your accountant needs to check
Before changing the count, assemble:
- The ownership structure: direct and indirect owners, share classes and changes during the period.
- The governing rights: articles, shareholder agreements, voting arrangements, options and rights to income or assets.
- The loan history: agreements, ledgers and bank evidence of repayment, including any remaining creditor rights or subsequent advances.
- The wider connections: other companies controlled by the relevant owners or combinations of owners, and any applicable attribution of rights.
- The dates and profits: the corporation tax accounting period, taxable and augmented profits, and the number of companies that actually count.
Do not simply count every directorship. Equally, do not automatically exclude overseas companies. Companies carrying on no trade or business during the relevant period may be disregarded, while certain passive holding companies qualify for a separate, tightly defined exclusion. “Non-trading” alone does not establish that exclusion.
When to review the position
A loan repayment, refinancing, shareholder exit or change to voting rights should trigger a fresh review. The same applies where a previous computation has carried forward an associated company count without revisiting the facts.
If all loans have been repaid, the practical question is: what rights remain, who holds them, and from what date? That gives your accountant a sound basis for deciding whether the count should change and recalculating the tax.
Accendo helps owners and finance teams review corporation tax positions alongside the underlying accounts and ownership arrangements. If your company’s funding or shareholding has changed, speak to us before the next return is finalised.
This article covers the standard UK small profits rate and marginal relief rules as at 25 September 2026. The outcome depends on the company’s particular rights and circumstances.