Director's Loan Accounts Explained — Tax Traps for UK Small Company Directors

What a director's loan account actually is

A director's loan account (DLA) records money owed between a director and their limited company — in either direction. If you take money out of the company that isn't salary, dividend, or a reimbursed expense, it goes through the DLA as a loan from the company to you. If you put personal money into the company to cover costs, it goes through as a loan from you to the company.

Many small company directors use the DLA informally, moving money in and out as cash flow allows. That informality is exactly what creates the tax risk — HMRC has specific rules for what happens if a director's loan account stays overdrawn (you owe the company money) at the company's year end.

The £10,000 threshold

If your overdrawn DLA balance goes above £10,000 at any point in the tax year, HMRC treats the loan as a benefit-in-kind. This means:

• You may need to pay Income Tax on the value of the "cheap" or interest-free loan through your Self Assessment
• The company must report it on a P11D and pay Class 1A National Insurance on the benefit
• If the company charges interest at or above HMRC's official rate of interest, no benefit-in-kind charge arises — but the official rate changes and should be checked directly on gov.uk before relying on a specific figure, since HMRC now reviews it quarterly

Section 455 tax — the bigger issue

The more significant risk is Corporation Tax under Section 455 (often just called "S455 tax"). If your DLA is still overdrawn nine months and one day after the company's year end, the company must pay an extra Corporation Tax charge of 33.75% of the outstanding balance.

This is not a permanent tax — it is refundable once the loan is repaid — but the refund is not immediate. The company has to wait until the Corporation Tax return covering the accounting period in which the loan was repaid is processed, which can mean the cash is tied up with HMRC for well over a year.

The "bed and breakfasting" trap

A common (and now specifically targeted) mistake is repaying the loan just before the nine-month deadline, then withdrawing a similar amount again shortly after — effectively never actually clearing the debt. HMRC's anti-avoidance rules specifically catch this: if more than £5,000 is withdrawn again within 30 days of a repayment, the repayment can be disregarded for S455 purposes, and the charge applies anyway.

How to manage a DLA properly

• Keep the account reconciled monthly, not just at year end — know the running balance at any point, not just when your accountant asks
• Clear the balance genuinely, through a dividend, bonus, or real repayment — not a short-term round trip of cash
• Declare dividends properly if the intention is to clear the loan with a dividend — it must be minuted and supported by sufficient distributable reserves before it can be used to offset the loan
• Charge interest at the official rate if you want to avoid the benefit-in-kind charge on a loan over £10,000, and account for that interest correctly in the company's records

Why this matters for your bookkeeping

A director's loan account is one of the areas where clean, up-to-date bookkeeping genuinely saves money — not just time. If nobody is tracking the DLA balance in real time, the first anyone finds out it has crept over £10,000, or is still outstanding nine months after year end, is often when the accountant is preparing the year-end accounts — by which point the options for managing it are much more limited.

This is a Corporation Tax and Self Assessment matter that sits outside bookkeeping/VAT-MTD service scope — but keeping the DLA correctly recorded month to month is exactly the kind of thing good bookkeeping should flag early, so your accountant has options rather than a surprise.