Student Loan Mortgage FAQ
General information only. This is not financial advice.
Last reviewed: 2026-06-06
Does having a student loan reduce how much I can borrow for a mortgage?
Yes, typically. Student loan repayments reduce your net take-home pay, which lenders factor into affordability. Most lenders deduct the actual student loan repayment from your net income before calculating the mortgage you can afford. A Plan 2 borrower earning £40,000 repays 9% of income above £27,295, which is approximately £1,143/year (£95/month) — this reduces your effective disposable income for mortgage stress-testing. The impact is proportional to salary: higher earners make larger repayments, but also have more income, so the net effect varies. Some lenders handle this more generously than others — a broker can identify which lenders' affordability models are most favourable for your income and loan plan.
What is the difference between Plan 1, 2, 4 and 5 student loans for mortgages?
The plan determines your repayment threshold and rate, which affects how much is deducted from take-home pay: Plan 1 (pre-2012 English/Welsh, Scottish and Northern Irish) — 9% above £24,990/year. Plan 2 (post-2012 England/Wales) — 9% above £27,295/year. Plan 4 (Scottish post-2012) — 9% above £31,395/year. Plan 5 (England/Wales from 2023 entry) — 9% above £25,000/year, 40-year repayment period. Postgraduate loans (PGL) — 6% above £21,000/year. For lenders assessing affordability, the monthly repayment figure is what matters — they deduct it from your net income. Higher threshold plans (Plan 4) result in lower repayments at a given salary, which improves affordability. Always disclose your plan type on application.
Should I pay off my student loan before applying for a mortgage?
In most cases, no. The student loan interest rate (currently RPI + 0%, 1.5%, or 3% depending on plan and income) is broadly in line with, or lower than, mortgage rates for many borrowers — it does not make financial sense to liquidate savings or investments to pay it off early. The repayment is income-contingent: if your earnings drop, repayments fall; the loan is written off after 25–40 years (depending on plan) regardless of what remains. The exception is Plan 1 borrowers close to repaying the balance, where a lump sum might make sense. Speak to a financial adviser before making early repayments — overpaying a student loan is rarely the optimal use of capital when trying to accumulate a mortgage deposit.
How do doctors, lawyers, and dentists with large student loan balances get mortgages?
High-earning professionals with large student loan balances are well-served by the mortgage market. Several lenders offer professional mortgage products — typically 5–5.5x income — specifically for doctors, dentists, solicitors, accountants, and other chartered professionals. While the student loan repayment does reduce affordability at the margin, high incomes largely offset it: a GP on £100,000 salary repays £6,518/year under Plan 2, but their income supports a significantly higher mortgage regardless. Some professional mortgage lenders also treat the student loan more favourably in their affordability models. The larger issue for newly qualified professionals is short employment history — see the professional mortgage FAQ for guidance on year-one and year-two income evidence.
Does a postgraduate student loan (PGL) affect my mortgage differently?
Postgraduate loans have a separate repayment threshold (9% above £21,000 currently) and repayments run concurrently with undergraduate loan repayments rather than sequentially. A borrower with both a Plan 2 undergraduate loan and a postgraduate loan repays 9% above £27,295 on the undergraduate loan and 6% above £21,000 on the postgraduate loan simultaneously. The combined repayment can be materially higher than either loan alone, reducing affordability. Lenders should ask about all outstanding student loans on the application form — disclose both. The combined monthly repayment figure is what the lender's system will use to stress-test affordability.
Will my student loan appear on my credit file and affect my credit score?
No. Student loans in England, Wales, Scotland and Northern Ireland are administered by the Student Loans Company (SLC) and are not reported to the major credit reference agencies (Experian, Equifax, TransUnion). They do not appear on your credit report and do not directly affect your credit score. However, they do affect affordability because lenders ask about them on the application form and factor the repayments into their income calculations. Private student loans (less common in the UK, more common for international students or professional courses) may appear on credit files if taken from commercial lenders — check with your provider.
Risk warning
Your home may be repossessed if you do not keep up repayments on your mortgage. Student loan repayment thresholds, rates, and write-off periods are set by government and may change. Verify current figures at gov.uk/repaying-your-student-loan before making decisions based on them.
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