Topic · Personal Finance
UK Mortgages
Most lenders cap affordability at 4.5× your income. The best rates go to borrowers with 40%+ deposits. The Bank Rate has been easing from its 2023 peak. Here’s everything that matters — in plain English.
By Matthew Burrows · Reviewed 21 April 2026
Current to April 2025 Stamp Duty reversion and post-peak Bank Rate environment.
On this page
The Essentials
UK Mortgages at a Glance
- Typical affordability cap
- 4.5× income
- FCA stress test rate (post-Aug 2022)
- SVR + 1%
- Best rates at
- 60% LTV or lower
- Minimum deposit
- 5% (95% LTV)
- First-time buyer SDLT threshold
- £300,000
- Additional property SDLT surcharge
- 5%
- Bank Rate direction
- Easing from 2023 peak
What Is a Mortgage?
A mortgage is a loan to buy property, secured against the property itself. You borrow from a lender (usually a bank or building society), pay back monthly over a set term — typically 25 years — and the lender holds a legal charge on the property until the debt is cleared.
Most UK mortgages are repayment: each monthly payment covers some interest and some capital, so by the end of the term you own the property outright. Interest-only mortgages (you pay only the interest, with the capital due at term-end) still exist but are niche — typically for buy-to-let landlords or high-net-worth residential borrowers with a defined repayment strategy.
What varies — and what costs or saves you thousands — is the rate, the term, the deposit, and the product type. The rest of this page walks through each.
How Much Can You Borrow?
Two tests shape what UK lenders will offer you: an income multiple and a stress test.
The income multiple
Most lenders cap borrowing at around 4.5× your gross household income. Some specialists will go to 5.5× or even 6× for professional borrowers (doctors, lawyers, accountants) or applicants with significant surplus income after outgoings.
FCA stress testing
Since August 2022, lenders must stress-test your affordability at the reversion rate (usually SVR) + 1% — relaxed from the previous SVR + 3%. In practice: if your fixed rate is 4% and the lender’s SVR is 8%, your income must comfortably cover monthly payments at 9%.
Worked example
A couple earning £60,000 + £30,000 = £90,000 combined could typically borrow up to £405,000 (4.5×). With a 10% deposit of £45,000, they’re buying at up to £450,000.
Their actual cap depends on credit profile, outgoings (credit cards, loans, childcare), term length, and stress test results — usually somewhere below the headline 4.5× figure.
What shrinks your borrowing
- Dependents — each child typically reduces borrowing by £5,000-£10,000
- Committed monthly outgoings — credit cards, personal loans, car finance, subscriptions
- Shorter term — a 20-year term demands higher monthly payments than a 30-year one
- Adverse credit — missed payments, CCJs, defaults narrow your lender pool
Fixed vs Variable Rates
The rate type you choose shapes your monthly certainty, your total interest paid, and your flexibility. Four products dominate the UK market.
| Product | How it works | Best for |
|---|---|---|
| Fixed rate | Rate locked for 2, 3, 5, or 10 years | Certainty on monthly payments |
| Tracker | Rate follows BoE Bank Rate + lender margin | Betting on Bank Rate falls |
| Standard Variable Rate (SVR) | Lender’s headline rate — varies at their discretion | Default after a fixed term ends (usually higher than competitive products) |
| Offset | Savings balance offsets mortgage interest | Savers with significant cash reserves |
Most UK borrowers choose a 5-year fixed rate — long enough to smooth through interest-rate cycles, short enough not to over-commit. After the fixed term ends, the rate reverts to the lender’s Standard Variable Rate, which is usually 1.5-3% higher than a competitive new product. Most borrowers remortgage before that happens.
Tracker mortgages benefit you when Bank Rate falls faster than the market expects. They hurt you when Bank Rate rises faster. Post the 2022-23 tightening cycle, most borrowers prioritised fixed rates for the certainty.
Deposits & Loan-to-Value
Loan-to-Value (LTV) is the percentage of a property’s value you’re borrowing. It’s the single biggest lever on your mortgage rate — lower LTV, better rate.
Typical deposit tiers
- 40%+ deposit (60% LTV): the lowest rates in the market. Most lenders’ “best buy” tables start here.
- 25% deposit (75% LTV): still very competitive — most mainstream products available.
- 15% deposit (85% LTV): mainstream territory — slight rate premium vs lower LTVs.
- 10% deposit (90% LTV): wider rate spread — the premium starts to bite.
- 5% deposit (95% LTV): highest rates, fewer lenders. Available but expect stricter income requirements.
Why LTV matters so much
Less risk to the lender = better rate for you. The gap between a 90% LTV rate and a 75% LTV rate can be 0.5-1.0% per year. On a £250,000 mortgage over 25 years, that’s £1,250-£2,500 saved per year — and potentially tens of thousands over the full term.
If you’re close to a deposit tier boundary, saving a bit more to cross into a better band often pays back multiples of the extra saved.
First-Time Buyers
First-time buyers get a handful of specific reliefs and schemes. Used in combination, they can be the difference between buying now and waiting five more years.
Stamp Duty relief
For properties bought as your first home (after April 2025 reversion):
- No SDLT on the first £300,000
- 5% SDLT on the portion between £300,001 and £500,000
- Relief is lost entirely if the property costs more than £500,000 — you pay standard rates on the whole price
See the UK Stamp Duty Guide for standard rates, or use the Stamp Duty Calculator to estimate your exact bill.
Lifetime ISA (LISA)
Save up to £4,000 per tax year and the government adds a 25% bonus — up to £1,000/year. Open one between ages 18-39; use it for a first home up to £450,000 before age 40. If you don’t use it for a property, funds lock until age 60 for retirement.
95% LTV mortgages
Post-pandemic, 95% LTV products returned to the mainstream. Several large lenders now offer them to first-time buyers with just a 5% deposit — expect slightly higher rates and stricter income criteria than lower-LTV products, but they open the ladder earlier.
Shared Ownership
Buy 25-75% of a property with a smaller mortgage, and pay rent on the remaining share to a housing association. “Staircase” up to 100% ownership over time by buying additional shares. Useful in high-cost areas where full ownership is out of reach.
First Homes scheme
Eligible first-time buyers can purchase designated new-build properties at a 30-50% discount to market value. Income caps apply (typically £80,000, or £90,000 in London). The discount passes to the next buyer when you sell, preserving the scheme’s affordability Most UK homeowners remortgage every 2-5 years. The trigger is almost always the same: your fixed rate ends, and the Standard Variable Rate (SVR) your mortgage would drop to is significantly higher than competitive new products. Route 1 Stay with your current lender, switch to one of their new products. Route 2 Apply to a different lender — full remortgage process. Most lenders let you secure a new rate up to 6 months before your current deal ends. Starting early protects you against rate rises while you decide. If rates fall further, many lenders will let you switch to the lower rate before completion — but confirm this with them. Three policy and market shifts since 2022 have reshaped what UK borrowing costs, and who can afford it. The Bank of England’s Bank Rate peaked at 5.25% in August 2023 — the highest in over 15 years. Cuts began late 2024 and continued into 2025/26. Mortgage rates followed: 5-year fixes that hit the mid-5% range have eased back toward 4%. For remortgagors, the payment shock is less severe than feared two years ago — but rates are still materially higher than the pre-2022 era. For first-time buyers, affordability remains the binding constraint. The Autumn 2024 Budget reversed the temporary SDLT uplift introduced in 2022: For an average UK property at £290,000, the thousands-of-pounds SDLT saving available in 2024 is now gone — the same property in 2026 attracts ~£4,500 of SDLT as a standard purchase, vs £2,000 under the old regime. In August 2022, the FCA relaxed the mortgage stress test — from SVR + 3% to SVR + 1%. On paper this should have boosted borrowing capacity. In practice, many lenders kept their own internal policies conservative through the rate peak. As Bank Rate eases, lender policies are now loosening — opening borrowing capacity for applicants who felt squeezed at the 2023 peak. Quick answers to the questions we see most often. Click any question to expand. Minimum 5% (a 95% LTV mortgage). More typical is 10-20% — and mortgage rates improve sharply as the deposit grows. A 40%+ deposit usually gets you the best rates available. At 5% you’ll have the highest rates and fewer lender choices. Fixed: the rate is locked for a set period (2, 3, 5, or 10 years) and your monthly payment doesn’t change. Tracker: the rate follows the Bank of England Base Rate plus a fixed margin — your payment moves when the Base Rate moves. Fixed gives certainty. Tracker benefits if Bank Rate falls faster than the market expects. Typical residential: 2-6 weeks from application to formal offer. Add 2-4 more weeks for conveyancing, exchange, and completion. Remortgage Product Transfers can complete in days because no valuation or full affordability check is needed. Yes — but lenders typically need 2+ years of accounts or HMRC SA302 statements. Some specialist lenders accept 1 year. You’ll pay slightly higher rates than a salaried applicant with a similar profile until you have a longer track record. A broker who specialises in self-employed applications often secures better terms than going direct. Your mortgage reverts to the lender’s Standard Variable Rate (SVR), which is usually 1.5-3% higher than a competitive new product. You should remortgage — either transfer to a new product with your current lender (Product Transfer), or switch to a new lender entirely. Product Transfer = stay with your current lender, move to one of their new products. No affordability check, no valuation, can complete in days. Remortgaging = apply to a new lender. Full application, affordability check, credit check, and valuation. More paperwork and time — but opens up the whole market, and often saves more. Typical costs: If you’re switching before your current fixed term ends, add early repayment charges — typically 1-5% of outstanding balance. Yes — most lenders allow overpayments of up to 10% of the outstanding balance per year without penalty. Overpaying reduces the total interest you pay and can shorten the term. Above the 10% allowance (during a fixed term), early repayment charges apply to the excess. A fee your lender charges if you repay the mortgage (or a significant part of it) before your fixed term ends. Typically 1-5% of the outstanding balance, reducing year-by-year during the fixed term. After the fixed term ends (on the SVR), ERCs don’t apply — you can repay or remortgage freely. Often yes — especially for first-time buyers, self-employed applicants, or anyone with complex circumstances. A whole-of-market broker can access products not available direct-to-customer, and handles the paperwork end-to-end. Broker fees vary: some charge £0 (paid by the lender’s commission), others £300-£1,000+. Compare the broker’s quote to going direct before committing. Whether you’re buying, remortgaging, or just planning ahead — start with the numbers.
Or explore further Depth The complete UK mortgage reference — worked examples, lender quirks, negotiation tactics, and the full decision tree from deposit to completion. Open the Guide → Trust YMYL content deserves scrutiny. If anything on this page is wrong or out of date, tell us — we log every correction publicly. Report a Correction →Remortgaging
Two routes
Product Transfer
Switch to New Lender
Timing
Costs to factor
What’s Changed — and Why It Matters
1. Bank Rate peak-then-ease
2. Stamp Duty reversion — April 2025
3. Stress test relaxation (and lender caution)
Common Questions
How much deposit do I need to buy a house in the UK?
What’s the difference between a fixed and tracker mortgage?
How long does a UK mortgage application take?
Can I get a mortgage if I’m self-employed?
What happens when my fixed rate ends?
What’s the difference between product transfer and remortgaging?
How much does it cost to remortgage?
Can I overpay my UK mortgage?
What’s an Early Repayment Charge (ERC)?
Is a mortgage broker worth it?
Your Next Step
Read the Full Guide
Spot an Error?
