Who this is for: Directors who have used or are considering using a director's loan account to inject capital into their trading company, and who have a holding company or are considering installing one.
Your trading company needed capital for a new project. The quickest route was a director's loan, you lent the company money from your personal funds and it would repay you when the project generated returns. It seemed straightforward. It was not.
The Section 455 problem
A director's loan that is outstanding nine months after the company's year-end triggers a Section 455 charge. The company pays 33.75% corporation tax on the outstanding loan balance. The charge is repayable when the loan is repaid, but HMRC retains the interest on the tax paid in the interim. If the loan exceeds £10,000, it also counts as a benefit in kind, triggering additional personal tax and National Insurance.
You lent the company £150,000. The project took longer than expected. Nine months after year-end, the loan was still outstanding. The company paid £50,625 in Section 455 tax. The loan exceeded £10,000, so you also had a benefit in kind to declare. The total cost of the director's loan route: approximately £55,000 in tax and penalties.
| Financing route | Tax on £150k loan | Deductibility | Flexibility |
|---|---|---|---|
| Director's loan (personal) | £50,625 Section 455 if outstanding 9 months | Not deductible | Informal, no commercial terms |
| Intercompany loan (from holdco) | £0 Section 455 | Interest deductible in tradeco | Formal terms, commercial rate |
What an intercompany loan would have done
An intercompany loan from a holding company to the trading subsidiary, at a commercial interest rate, has none of the Section 455 problems. The interest is deductible in the trading subsidiary, reducing the corporation tax bill. It is taxable in the holding company. but at a time and rate of your choosing, since the holdco controls the extraction timing.
The holding company would have had the capital available because profits had been moving there over previous years rather than being extracted personally. The intercompany loan would have been a formal, documented transaction with commercial terms. No Section 455. No benefit in kind. No penalties.
The cost of not understanding the difference between a director's loan and an intercompany loan: thousands in unnecessary tax and penalties. The holdco is not just a tax structure. It is the capital reservoir that makes efficient financing possible.
Map Your Structure
If you have used or are considering a director's loan to finance your trading company, the audit will show you the Section 455 exposure and the holding structure that makes it unnecessary.
Run the Free Audit →What This Means for Your Position
The situations in this article are not edge cases. They are the default outcome for founders who operate without the architecture above their business. The audit maps your position in five minutes and tells you exactly which of these gaps apply to you.
The audit is free. The Discovery Call is a paid 30-minute working session. The £500 is credited in full against the Capital Architecture.
The Capital Allocation Problem
Financing your own business through personal extraction and reinjection is a Stability-layer problem. Every cycle of that process is a tax event. The Growth layer (a holding company that retains capital and deploys it to group members as intercompany loans) eliminates the personal tax event entirely.
The Expansion layer is the constitutional architecture that governs how capital is allocated across the group, investment mandates, intercompany lending frameworks, and governance mechanisms that ensure capital is deployed to its highest use without leaking through unnecessary tax events at every step.