An employed borrower hands a lender three payslips and the income question is answered. A self-employed borrower hands over accounts they had a hand in shaping, for a business whose income can halve or double, and the lender has to decide what number to believe. That is the whole problem in one sentence. Nothing about a self-employed mortgage is punitive — the affordability model, the stress test and the loan-to-value bands are identical. What differs is the step before all of that: converting a business into a single, defensible income figure. This guide covers how lenders do it, where advisors lose money for clients without realising, and what a file needs to look like before it is submitted.
Lender definitions are broader than most clients expect, and the threshold is usually ownership rather than job title. A sole trader or freelancer is obviously self-employed. So is a partner in a partnership. So, at most lenders, is a company director holding more than 20% or 25% of the shares — even if they draw a regular salary from their own payroll and think of themselves as employed. Contractors sit in a category of their own: many lenders will assess a day-rate contractor on an annualised day rate rather than on accounts at all, which can be dramatically more generous than their filed profit.
Establishing which bucket a client falls into is the first question of the meeting, not a detail to confirm later. The bucket determines the income figure, the evidence pack and, quite often, the lender panel.
Which income figure the lender actually uses
Clients almost universally quote turnover. Lenders almost universally ignore it. The figure that sizes the loan is the profit that reaches the borrower, and how it is measured depends on the structure:
Sole trader: net profit before tax, taken from tax returns or certified accounts.
Partnership: the applicant's share of net profit, not the partnership's total.
Company director: salary plus dividends drawn — or, at a meaningful minority of lenders, salary plus the applicant's share of the company's retained net profit.
Contractor: often day rate × days worked per week × 46–48 weeks, evidenced by the contract rather than by accounts.
That third bullet is where most avoidable damage happens. A director who has been advised — correctly, for tax — to take a small salary and leave profit in the company presents as a low earner to a salary-plus-dividends lender and as a solid one to a retained-profit lender. Same business, same year, two very different maximum loans. Whenever a client is likely to buy within eighteen months, the drawing strategy needs to be a joint conversation with their accountant, not a discovery made at underwriting.
How many years, and how they are averaged
Two years of accounts is the working baseline across most of the market. The averaging convention, though, carries a quiet asymmetry that decides outcomes:
Profit rising: most lenders take the average of the last two years — so a growing business is assessed below its current run rate.
Profit falling: most lenders take the most recent year, not the average — the lower of the two again.
The rule is conservative in both directions by design. It also means timing an application around an accounting year-end can move a client's ceiling by a five-figure sum with no change in the underlying business. A borrower whose strongest year has just closed but not yet been filed is frequently better served by waiting six weeks than by submitting now.
A worked example
Take an illustrative company director. The business made €120,000 of net profit last year and €90,000 the year before. For tax efficiency she draws a salary of €12,000 and dividends of €30,000, leaving the rest in the company. Assume a lender applies a simple income multiple of 4.5× for illustration.
Lender A (salary + dividends, two-year average) sees €42,000 drawn this year. Suppose the prior year's drawings were €38,000, giving an average of €40,000 → a maximum loan of roughly €180,000.
Lender B (salary + share of retained net profit, two-year average) sees €12,000 + €120,000 = €132,000 this year and €12,000 + €90,000 = €102,000 last year. The average is €117,000 → a maximum loan of roughly €526,000.
Nearly €350,000 of borrowing capacity sits in the choice of lender, on an identical set of accounts. That is not a loophole; both assessments are defensible readings of the same business. It is simply what happens when the input to the affordability model is a judgement rather than a payslip. (Figures are illustrative and rounded to show the mechanics; real lenders layer a full affordability assessment and a stress test on top of any multiple, and the outcome will differ.)
Whichever number survives, it then goes through the same machinery every other borrower faces: the outgoings deduction covered in our guide to how lenders assess mortgage affordability, and the higher assessment rate explained in the mortgage stress test. The self-employed step does not replace those — it feeds them.
The evidence pack that gets a file approved
Self-employed applications fail on documentation far more often than on affordability. A pack that anticipates the underwriter's questions moves faster and gets fewer haircuts applied to the income figure. In practice that means: two to three years of certified accounts or tax calculations plus the corresponding tax-year overviews; three to six months of business and personal bank statements; a current-year figure from the accountant if the last filed year is stale; the contract and renewal history for contractors; and a short written explanation of any anomaly before anyone has to ask for one.
That last item is undervalued. A profit drop with a one-paragraph accountant's note attached is a story an underwriter can accept. The same drop, unexplained, is a risk they price for or decline. The broader document checklist in our guide to the documents needed to buy a house applies on top of all of this — the self-employed pack is additive, not a substitute.
What buyers' agents and sellers' agents should take from this
For an agent, a self-employed buyer is not a weaker buyer — but they are a buyer whose stated budget deserves a question. "Has a lender seen your accounts, or is that figure from a calculator?" is the single most useful thing an agent can ask before writing an offer. A director quoting a number based on turnover is quoting a number that will not survive underwriting, and the deal will collapse late, after the property is off the market and a chain has formed behind it. A proper pre-approval rather than a pre-qualification matters more here than for any other borrower type.
On the listing side, the same logic runs backwards. A self-employed buyer with a decision in principle from a lender that has actually read their accounts is often a stronger buyer than an employed one with a soft-search estimate, because their income has already been tested at the point of underwriting most likely to fail.
Where valuation risk quietly compounds
There is a second exposure specific to this group. Self-employed borrowers frequently land near the top of a lender's stressed maximum, which leaves no headroom if the property values below the agreed price — the loan is capped at the lower of price and valuation, and the shortfall has to come out of the deposit. A borrower with a thin margin cannot absorb it. Checking the price against comparable sales before the offer is committed is the cheapest protection available, and it is precisely where Biedradar fits an advisor's or agent's workflow: enter an address and it returns comparable sales, a valuation range and market signals, then produces a branded property analysis report in minutes. Handing a self-employed client a valuation report they can read alongside their income assessment covers both halves of the risk — what they can borrow, and what the property is actually worth.
The advisor's short version
Identify the structure first, because it determines the income definition. Establish which years the lender will use and how they will be averaged, because a rising business is assessed low and a falling one lower. Check whether the client's drawings strategy is costing them borrowing capacity, and if so, whether the purchase timeline allows for it to change. Build the evidence pack before the application rather than during it, and explain anomalies unprompted. Then choose the lender to match the income definition, not the headline rate — because on a self-employed file, the lender you pick is worth far more to the client than the tenth of a percentage point you saved them.
Frequently asked questions
How many years of accounts do you need for a self-employed mortgage?
Two full years of accounts or tax returns is the common baseline, and many lenders average the last two. Some will accept one year with strong compensating factors — a large deposit, a track record in the same profession as an employee, or an accountant's certified projection. A minority ask for three years and average all of them. Because the requirement varies so much between lenders, the number of years a client has is often what determines which lenders you can even approach, not whether they can borrow at all.
Do lenders use gross revenue or net profit for a self-employed mortgage?
Net profit, essentially always. Revenue is not income — a contractor turning over €200,000 with €150,000 of costs earns €50,000 in the lender's eyes. For a sole trader the figure is usually net profit before tax. For a partner it is their share of profit. For a company director it is salary plus dividends drawn, and at some lenders salary plus their share of retained net profit. Getting this classification right before you submit is the single highest-leverage thing an advisor does on a self-employed file.
Can you get a mortgage with one year of self-employment?
Yes, at a narrower set of lenders and usually on tighter terms. The lenders who accept one year typically want to see that the work is a continuation of the same trade the borrower did as an employee, an accountant-certified set of accounts, and often a lower loan-to-value. Expect a smaller lender panel, a slightly higher rate, and more documentation. It is a viable route, not a hopeless one, but it rewards preparation and lender selection over shopping on headline rate.
Does taking a small salary to reduce tax hurt your mortgage application?
It can, significantly. A company director who pays themselves a minimal salary and leaves profit in the business looks poor on paper to a lender that assesses salary plus dividends only. The same director looks affordable at a lender that considers retained profit. Nothing about the business changed — only the assessment method. Where a purchase is on the horizon, the tax-efficient drawing strategy and the mortgage strategy need to be discussed together, ideally a full accounting year before the application.
Does a declining year of profit block a self-employed mortgage?
It complicates it rather than blocking it. Most lenders average recent years but cap the figure at the most recent year when profit has fallen, on the view that the latest year is the best estimate of the next one. So a borrower whose profit dropped will usually be assessed on the lower, most recent number. A credible written explanation from an accountant — a one-off investment, a lost-then-replaced client, a period of illness — genuinely matters at underwriting, and is worth preparing rather than waiting to be asked for.
Are self-employed mortgage rates higher?
Not inherently. A self-employed borrower who meets a mainstream lender's criteria on a standard loan-to-value gets the same rates as an employed one. Rates rise when the file has to move to a specialist lender — one year of trading, complex company structures, recent losses, or an unusual income mix. So the extra cost, when it appears, comes from lender selection rather than from employment status itself.
