Why Your Accountant Might Be Shrinking Your Mortgage Without Realising It

There are 4.52 million self-employed people in the UK — around 13% of everyone in work, according to the House of Commons Library’s July 2026 briefing on self-employment. They run cafés and consultancies, drive vans, write code, cut hair, film weddings and fix boilers. Between them they hold up a meaningful slice of the economy.

And when they go looking for a mortgage, a great many of them are told, in one form or another, that they are complicated.

That word does a lot of damage. It suggests the problem lies with the borrower — that working for yourself is a financial character flaw to be apologised for. It isn’t. The problem is that the mortgage system was designed around a monthly payslip, and a payslip is the one document a self-employed person will never produce.

What replaces it is a number produced by your accountant. And that number is very often working against you, for reasons neither of you intended.

Here is what is actually going on, and what genuinely makes a difference.

There is no such thing as a “self-employed mortgage”

This is the first thing worth clearing up, because a lot of anxiety hangs on it.

There is no separate product for self-employed people. No special rate, no penalty tier, no different set of mortgages held behind a counter. A self-employed applicant borrows from the same lenders, at the same rates, on the same terms as an employed applicant with equivalent finances.

What differs is not the product. It is the evidence — how a lender establishes what you earn, and how much of that earning it is prepared to count.

An employed applicant hands over three payslips and the conversation is largely over. A self-employed applicant hands over accounts, tax calculations, business bank statements and possibly a letter from an accountant, and the conversation is only beginning. Same destination, longer road.

The number that matters is not the number you think

This is the single most useful thing to understand, and it catches out an enormous number of otherwise well-organised people.

Most self-employed borrowers assume a lender looks at what the business turned over, or at what landed in their personal account each month. It doesn’t. For a sole trader or a partnership, a lender will generally work from the net profit — the figure left after allowable expenses — as it appears on your HMRC tax calculation.

Now consider what a good accountant is paid to do. Their job is to reduce your taxable profit, entirely legitimately, through allowable expenses, capital allowances and sensible structuring. They do this well and you pay less tax. It is exactly what you hired them for.

But the figure that makes you efficient at tax time is, very often, the same figure a lender uses to decide what you can borrow. Two people can run identical businesses generating identical cash, and the one whose accountant has been more aggressive on expenses may be assessed as able to borrow substantially less.

This is not a loophole and it is not something to game. It is a genuine tension between two reasonable objectives, and the only real defence against it is timing. If you know you want to buy in two or three years, that is worth discussing with your accountant now — not in the same week you find a house. By the time the accounts are filed, the die is largely cast.

Limited company directors face a version of the same problem in a different shape. Most lenders will assess a director on salary plus dividends drawn. If you have deliberately left profit in the company — for growth, for a tax year that suits you better, for prudence — that retained profit is invisible to most affordability calculations, even though it is unarguably money your business made. A minority of lenders will consider salary plus a share of net or retained profit instead. Whether that applies to you depends on the lender, your shareholding and how the accounts are presented.

The two-year rule, and where it bends

The commonly cited requirement is two years of accounts or tax calculations. It is a fair general rule and most of the market works that way.

It is not, however, universal. Some lenders will consider an application on one year’s figures, particularly where there is a demonstrable history in the same line of work — for example, someone who spent six years employed as an electrician and has now spent one year self-employed as one. The trading history is short; the earning history is not, and that distinction matters to an underwriter.

Contractors are treated differently again. Someone on a day rate is frequently assessed on the contract itself — day rate multiplied out across a working year — rather than on filed accounts at all. For a well-paid contractor, this can produce a considerably better outcome than the accounts route, and many people in that position never discover the option exists.

Criteria in this area vary widely between lenders and change without notice, which is precisely why the answer to “will they lend to me?” is so rarely a simple yes or no.

The paperwork, in the order it matters

Most delays are caused by documents, not decisions. Getting ahead of this is unglamorous and highly effective.

Tax calculations and tax year overviews. The tax calculation — still widely called by its old name, the SA302 — shows your income and the tax due on it. The tax year overview shows what HMRC actually recorded as paid. Lenders generally want both, for two or three years, because together they confirm that the figures on your accounts were the figures you declared. You can download both from your HMRC account.

Filed accounts. Where accounts are required, who prepared them can matter. Many lenders will only accept accounts signed off by an accountant holding a recognised qualification — chartered or certified. An unqualified bookkeeper may be doing perfectly good work and still cause an application to stall.

Business and personal bank statements. Usually three to six months. Underwriters read these more closely than people expect.

Consistency. If your accounts, your tax calculations and your bank statements tell slightly different stories, expect questions. Reconciling them in advance is far easier than explaining them under time pressure.

Why one lender says no and another says yes

The most common misconception in this whole subject is that a decline is a verdict on the applicant.

It is not. It is a verdict on the fit between one applicant and one lender’s criteria on one particular day. Lenders differ enormously in how they treat retained profit, how they average two years of figures when the second year is lower than the first, how they view a recent change of trading structure, and how much weight they place on a short trading history against a long professional one.

Identical applications genuinely do produce different answers at different institutions. That is not a flaw in the system so much as the system working as designed — different lenders are pursuing different books of business, and one lender’s decline is another’s target customer.

The practical consequence is that where an application is placed matters at least as much as how strong it is.

Something may be about to change

There is a live regulatory thread worth watching.

In June 2026 the Financial Conduct Authority published CP26/18, a consultation forming part of its wider Mortgage Rule Review, with a stated aim of improving access for underserved groups. Self-employed and variable-income borrowers are named explicitly. Among the proposals is reducing the barriers that discourage lenders from offering flexible repayment arrangements to people whose income does not arrive in equal monthly instalments.

The consultation closed on 28 July 2026 and the FCA has not yet published final rules, so nothing has changed in practice. But the direction of travel is notable: the regulator has looked at how the mortgage market treats variable income and concluded that it could work better. For 4.52 million people, that is a conversation worth following.

The short version

If you work for yourself and you want to buy or remortgage, three things are worth knowing.

The obstacle is evidence, not eligibility. The figure that governs your borrowing is usually your declared profit rather than your turnover, and it is decided in advance by how your accounts are prepared. And a decline from one lender tells you very little about what another would say.

None of that makes self-employment a problem. It makes it a case that needs presenting properly — which, for something as consequential as a mortgage, is not an unreasonable thing to ask.

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This article was contributed by Falcon Finance, a whole-of-market mortgage broker based in Eltham, south east London. Falcon Finance is an appointed representative of Pivotal Financial Limited, which is authorised and regulated by the Financial Conduct Authority.

This article is general information and not financial advice. Lender criteria vary and change without notice. Figures are correct as at 31 August 2026. Your home may be repossessed if you do not keep up repayments on your mortgage.