How Banks Assess Self-Employed Income
Most high-street banks require 2–3 years of accounts or SA302 tax calculations to assess self-employed income. They typically take the lower of the last two years' net profit (for sole traders) or salary + dividends (for limited company directors), and use that as your income for affordability. If your business is growing, this penalises you for being on an upward trajectory.
Many banks also ignore retained profits held inside a limited company, even though those are accessible to you as a director. And they apply conservative multiples — usually 4.5× average income — which caps borrowing well below what a high-earning contractor could service.
The net effect: a contractor earning £120,000 on a day-rate may be offered £300,000 by their bank, when their actual affordable borrowing is closer to £500,000. The bank is not wrong; its scorecard is just built for PAYE employees.
How Specialist Self-Employed Lenders Assess You
There are 15+ UK lenders with tailored self-employed policies. Halifax, Metro, Kent Reliance, and several building societies all have dedicated self-employed underwriting. They offer approaches that high-street default assessment misses:
- 1 year's accounts accepted — some lenders will consider you after just 12 months of trading, not 2–3 years.
- Day-rate × 48 weeks — for contractors, several lenders will take your daily rate × 5 days × 48 weeks as annualised income, bypassing accounts entirely.
- Latest year's profit used — rather than the lower of two years, some lenders use the most recent year if your business is growing.
- Salary + dividends + retained profit — for ltd company directors, a few lenders will include retained profits held in the company as part of your income.
- SA302 only — some lenders will accept HMRC tax calculations without full certified accounts from an accountant.
Each lender has its own quirks. Halifax accepts day-rate contractors easily but is stricter on limited company directors. Metro accepts 1 year of accounts for certain professions only. Kent Reliance accepts retained profit but has tighter LTV caps. A broker knows these rules cold.
Why Going Direct to Your Bank Usually Loses
When a self-employed borrower applies directly to their bank, they are funnelled into the bank's default self-employed assessment — almost always the most conservative interpretation of their income. There is no one on the bank's side optimising for you; the front-line mortgage adviser is a salesperson with a narrow product range.
Even if your bank has a decent self-employed policy on paper, they will not tell you that a competitor has a more generous one. Nor will they offer you their most generous interpretation of your income — underwriters are incentivised to be cautious.
A broker, by contrast, will look at your income structure and say: "You have £80k salary + £40k dividends + £60k retained profit. Lender X ignores retained profit, Lender Y includes it, and Lender Z uses a blended average. You are better off with Lender Y at 4.6% than your bank's 5.1% on a smaller loan amount."
Case Study: Contractor Remortgage
A IT contractor on a £500/day outside-IR35 contract, trading through a limited company for 18 months, applies directly to their bank. The bank asks for 2 years of certified accounts, sees only 1 year, and declines. The contractor is facing the SVR.
A broker submits the same case to Halifax's dedicated contractor proposition, which uses day-rate × 5 × 48 = £120,000 annualised income with no accounts required. Halifax offers £540,000 at 4.7% on a 5-year fix. The bank had offered £320,000 at 5.2% (before decline). Difference in achievable borrowing: £220,000. Difference in rate: 0.5%.
This is not edge-case. Half of UK contractors who try their bank first get declined or under-offered before discovering a broker-sourced contractor product.
Who Benefits Most From Using a Broker
The broker advantage is largest for: (1) limited company directors with retained profits, (2) contractors on day-rates, (3) self-employed borrowers with less than 3 years of accounts, (4) borrowers with rising income who do not want to be penalised by the 'lower of two years' rule, and (5) anyone with multiple income streams (e.g. salary + self-employed side business + rental).
If you are a sole trader with 5 years of stable accounts and flat income, your bank may price you reasonably. For anyone else self-employed, a broker will almost always unlock a better outcome.
Important: Your home may be repossessed if you do not keep up repayments on your mortgage. There will be a fee for mortgage advice. The actual rate available will depend on your circumstances. Think carefully before securing other debts against your home.