The full answer
What actually decides it.
Usually not, though it is one of the few things on this page where lenders are genuinely hard to categorise.
The ordinary position is that a director’s loan is settled against the dividends you pay yourself, and clears at the end of the year. Where that is what is happening and there is no monthly payment being made, there is nothing for a lender to deduct from your affordability. A commitment that costs you nothing each month does not reduce what you have available each month.
What a lender may do instead is look at the health of the accounts around it, to satisfy itself that the arrangement is sustainable. That is where size starts to matter. A modest director’s loan in a profitable practice is unremarkable. A large one in a company that is not making enough profit to clear it is a different picture, and a lender may read it as a sign of strain and count it against you.
The point to take from that is that the loan is rarely assessed on its own. It is assessed against the profitability of the business behind it, which means that the same balance can be a non-issue in one set of accounts and a problem in another.
If yours is substantial, it is worth understanding how it sits in your accounts before an application rather than being asked about it during one.
Where lenders differ
- Lenders do differ here, and not in a way that groups neatly. Some take a director’s loan into account and view it negatively. Others do not take it into account at all, in which case it has no effect on the income assessed for your residential mortgage.
- Among those that do consider it, the size of the loan relative to the profitability of the company is what moves the outcome, rather than the existence of the loan itself.
Written from Colin Wallace’s own answer, given on his recorded interview with Joe Wallace of 26 August 2026 and reviewed by Colin Wallace.