The nine-month boundary: director’s loans, benefit charges and the cost of leaving a balance outstanding

For many owner-managed companies, the director’s loan account is one of the least glamorous parts of the books. It is also one of the easiest places for a routine withdrawal to create an unexpected tax cost. Money taken from the company is not automatically salary or dividends. If it is recorded as a loan, the tax outcome depends on the amount, the interest terms, the timing of repayment and the company’s accounting period.

The practical risk is not that a director’s loan is always wrong. It is that the rules operate on two different clocks, and both need to be watched. One clock follows the tax year and governs the benefit-in-kind treatment of cheap or interest-free loans. The other follows the company’s accounting period and governs the section 455 charge. A director who watches only one of them can still receive an unwelcome bill.

Two clocks, not one

The first clock is the beneficial loan rules. If a company lends money to a director and the loan is interest-free or charged below HMRC’s official rate, a taxable benefit can arise. For directors, the small-loan exemption is lost once the aggregate of such loans exceeds £10,000 at any point in the tax year. At that point, the benefit is generally calculated by reference to the official rate of interest, less any interest actually paid.

The £10,000 figure is often misunderstood. It is not an allowance that makes the first £10,000 tax-free. It is a threshold that determines whether the beneficial loan rules apply at all. If total loans stay at or below £10,000 throughout the tax year, and no other beneficial loans are in point, the exemption can apply. If the balance goes above £10,000, the exemption is lost. The benefit is then reported on form P11D, and Class 1A National Insurance may follow. The P11D deadline is 6 July after the end of the tax year, with Class 1A normally due by 22 July, or 19 July if paid by post.

The second clock is the section 455 charge. This is a company-level charge on certain loans to participators, including directors who are shareholders. It is not a benefit-in-kind charge and it does not have a £10,000 exemption. If a loan remains outstanding at the end of the nine months and one day following the end of the company’s accounting period, the company may have to pay 33.75% of the outstanding balance. The charge is normally reported on form CT600A and paid alongside corporation tax. It is not deductible for corporation tax purposes.

Section 455 in practice

Suppose a company has an accounting period ending on 31 March 2026. The nine-month and one-day date is 1 January 2027. If a director has withdrawn £10,000 and the loan account still shows that balance outstanding on 1 January 2027, the company may face a section 455 charge of £3,375. That is 33.75% of £10,000.

If the loan is repaid before the deadline, the charge should not arise. If it is repaid later, the company may be able to reclaim the section 455 tax, but only by making the appropriate claim. The charge is therefore best understood as a cash-flow and compliance issue rather than a permanent tax in every case. It still needs to be funded and reported on time.

The £10,000 threshold and the section 455 charge can apply to the same withdrawal, but they do different things. A £10,000 interest-free loan that stays within the beneficial loan exemption can still trigger section 455 if it is not repaid by the nine-month and one-day date. A loan above £10,000 can trigger both a benefit-in-kind reporting obligation and the company-level charge. The figures are not interchangeable.

Repayment must be real

HMRC expects a repayment of a director’s loan to be genuine. A bookkeeping entry alone may not be enough if the commercial reality is that the director still has the use of the money. A common pattern is a last-minute credit to the loan account followed by a fresh withdrawal shortly afterwards. That is the kind of arrangement that attracts scrutiny.

Repayment can be made in cash. It can also be made by crediting a salary, bonus or dividend to the director’s account, but those routes have their own tax and National Insurance consequences. They should be properly documented and processed. A dividend, for example, needs to be properly declared and supported by the company’s records. Writing off a loan is another option, but it is not a free one: a written-off loan can be treated as a distribution, with income tax consequences for the director.

Good records matter. A company should be able to show the loan agreement or board decision, the amount advanced, the interest terms, the repayment schedule and the bank evidence that money actually moved. The director’s loan account should reconcile to the accounting records and the bank statements. If interest is charged, the rate and calculation should be clear. If the loan is repaid, the date and source of repayment should be identifiable.

A calm checklist before the deadline

• Reconcile the director’s loan account to the bank and the nominal ledger.
• Identify all loans and advances to directors and participators, not just the latest withdrawal.
• Check whether the aggregate exceeded £10,000 at any point in the tax year.
• Confirm whether interest at least equal to HMRC’s official rate was charged.
• Note the company’s accounting period end and calculate the nine-month and one-day date.
• Decide whether the loan will be repaid before that date, and document the repayment properly.
• Consider whether a formal loan agreement, board minutes and interest terms are in place.
• Check that the loan was approved under company law and that distributable reserves are not an issue.
• If section 455 applies, budget for the 33.75% charge and include form CT600A with the company tax return.
• If the loan is repaid after the charge is paid, keep the evidence needed to support a reclaim.

The director’s loan clock is not designed to catch companies out. It exists to stop company money being extracted without the usual tax treatment. A measured review before the deadline is usually enough to separate a genuine short-term advance from a balance that has quietly become expensive. PrimoTax recommends treating the loan account as a live record throughout the year, rather than a year-end surprise.