The Complete UK Mortgage Guide 2026

A mortgage is a loan secured against a property, repaid monthly over an agreed term — usually 25 to 35 years. This guide explains how mortgages work in 2026: deposits, affordability, interest rates, stamp duty and the application process, with tables, current figures and calculators to run your own numbers.

How UK mortgages work

You put down a deposit (a percentage of the price) and borrow the rest from a lender. You repay monthly over the term, and each payment covers interest plus a slice of the capital (on the standard "repayment" basis — interest-only mortgages exist but are now mostly for buy-to-let). The interest rate determines the cost of the loan, and is usually fixed for an initial period (commonly 2 or 5 years) before reverting to the lender's higher standard variable rate — which is why most people remortgage at the end of each fixed term. See exactly what a given rate and term cost each month with the mortgage repayment calculator.

Types of mortgage

Most residential mortgages in 2026 are repayment mortgages: each monthly payment clears the interest plus a slice of the capital, so the loan is fully paid off by the end of the term. Interest-only mortgages — where you pay just the interest and repay the whole capital at the end — are now largely limited to buy-to-let and some later-life lending, because you need a credible plan to repay the lump sum.

Beyond the repayment basis, the "type" of mortgage usually describes your situation rather than a different product:

• First-time buyer — you don't own a property; you get access to the LISA bonus, higher-multiple first-time-buyer deals, and low-deposit schemes.
• Home mover — porting your existing mortgage or taking a new one when you move; stamp duty applies.
• Remortgage — switching your existing mortgage to a new deal or lender (see below).
• Buy-to-let — for landlords, assessed mainly on expected rental income, usually interest-only, and carrying the 5% stamp duty surcharge. Our build-to-rent analysis covers where the rental market is heading.
• New-build — buying off-plan or newly completed; lenders sometimes cap the LTV slightly lower, and your mortgage offer needs to stay valid until completion, which matters on long off-plan timelines.

Rates and the Bank of England base rate

The Bank of England sets the base rate — currently 3.75%, held at the June 2026 meeting — which is the reference point for the whole market. Lenders add a margin on top to cover their costs and risk, so mortgage rates always sit above the base rate. When the base rate falls, fixed and tracker rates tend to follow; when it rises, so do they.

Two levers move your rate more than anything else: the size of your deposit (your LTV, below) and whether you fix or track. The headline "average" hides a wide spread — a buyer with a 40% deposit and clean credit can be a full percentage point or more below a buyer with 5% down. Rates change constantly, so treat any figure here as a mid-2026 snapshot and check live deals before you decide.

Loan-to-value (LTV) and your deposit

Loan-to-value is the size of your loan as a percentage of the property price — the mirror image of your deposit. Borrow £180,000 on a £200,000 home and your LTV is 90% (a 10% deposit). LTV matters because lenders price risk in bands: the more of your own money you put in, the lower the rate you're offered, in clear steps at 60%, 75%, 85%, 90% and 95%.

*Illustrative good-deal 5-year fixed rates for a strong applicant, mid-2026; market averages were higher (~5.5%). Monthly figures are for a £250,000 mortgage on a 25-year repayment basis.

That last row is the headline: the gap between a 60% and a 95% LTV deal is about £144 a month on a £250,000 mortgage — over £43,000 across a 25-year term. It's the single best argument for saving a bigger deposit where you can, and for aiming to cross the next LTV threshold (e.g. getting from 91% to 90%) rather than landing just the wrong side of it.

Before you're mortgage-ready: saving your deposit

How much can you borrow?

Two things cap your loan: an income multiple and an affordability stress test, and you're offered the lower of the two. Most lending sits at 4 to 4.5 times gross income, with a minority reaching higher for the right profile.

So a £35,000 earner can typically borrow around £157,500, and a couple on £60,000 combined around £270,000 — before the affordability test, which subtracts your real outgoings and checks you could cope if rates rose. Existing debt is the biggest thing that lowers the figure. For the full breakdown, worked salary tables and how debt hits your number, see how much can I borrow?, or get an instant estimate from the affordability calculator.

Fixed vs variable rates

A fixed rate locks your interest rate — and so your monthly payment — for an initial period, usually 2 or 5 years. A variable rate (a tracker following the base rate, or the lender's standard variable rate) can move up or down. In mid-2026, with 2- and 5-year fixes priced very close together (both averaging around 5.5%), the choice is mostly about certainty versus flexibility.

There's no universally right answer — it depends how much you value a predictable payment and your view on where rates go next. Most UK buyers still choose a fix for the certainty.

Remortgaging: what happens when your deal ends

When your initial fixed or tracker period ends — typically after 2 or 5 years — you roll onto the lender's standard variable rate (SVR), which is usually much higher than any deal you'd choose. That's why most people remortgage: they switch to a new deal, either with their current lender (a "product transfer") or a new one, a few months before the existing deal expires. It's the single biggest routine opportunity to cut your monthly payment, and it's worth diarising for around 3–4 months before your fix ends so a new rate is lined up to start the day the old one finishes — avoiding even a month on the SVR.

Two things can work in your favour at remortgage time: if your home has risen in value or you've paid down the balance, you may have dropped into a lower LTV band and qualify for a better rate; and a broker can compare a product transfer against switching lender. Run any new rate through the repayment calculator first, and if you're thinking of borrowing more at the same time — for home improvements, say — see borrowing more to renovate.

Stamp duty in 2026

Stamp Duty Land Tax (SDLT) applies in England and Northern Ireland (Scotland and Wales have their own systems). The thresholds dropped in April 2025, so 2026 rates are:

First-time buyers pay nothing up to £300,000, but lose the relief entirely above £500,000. An additional 5% surcharge applies to second homes and buy-to-lets. On a £290,000 home a mover pays about £4,500; a first-time buyer pays nothing. Get your exact figure from the stamp duty calculator, and see the full worked examples in the stamp duty guide.

Help for first-time buyers

Several schemes and products exist to help first-time buyers in 2026 — none is a silver bullet, but the right one can bring a purchase forward by years:

• Lifetime ISA (LISA): save up to £4,000 a year and the government adds a 25% bonus (up to £1,000/year) toward a first home worth up to £450,000. You must be 18–39 to open one. Note the LISA is due to be replaced by a new first-time-buyer savings product from April 2028 — existing LISAs will continue to work.
• Shared ownership: buy a share (typically 25–75%) of a home and pay rent on the rest, with a much smaller deposit and mortgage. Common on new-build schemes — for example, shared ownership from under £100,000 features at Houlton in Rugby.
• Mortgage guarantee scheme: supports 95% mortgages, keeping low-deposit lending available.
• First Homes scheme: a discount (often 30%) on selected new-build homes for local first-time buyers, where available.
• Joint Borrower Sole Proprietor (JBSP): a family member's income is added to your application to boost borrowing, without them owning a share of the property.
• Higher-multiple first-time buyer products: some lenders now lend 5–5.5× income specifically to first-time buyers (see borrowing, above).

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The real cost of buying — beyond the mortgage

The mortgage is the biggest commitment, but it isn't the only cost at completion. Beyond the deposit, budget several thousand pounds for conveyancing, searches, a survey, mortgage fees, removals and buildings insurance — roughly £3,500–£6,000 for a first-time buyer, more for movers once stamp duty is added. The full itemised breakdown, with tables and worked totals, is in the complete cost of buying a house. And once you're in, remember the ongoing costs — council tax, service charge if leasehold, and maintenance — change your monthly budget too.

The mortgage application, step by step

1. Check your finances — pull your credit report, tidy card balances, get on the electoral roll, and use the affordability calculator to gauge your range.
2. Get a Decision in Principle (DIP) — a soft-check estimate of what a lender will offer, which sellers and agents like to see before accepting an offer.
3. Find the property and make an offer — with your DIP and deposit ready, you're a credible buyer.
4. Apply for the mortgage — the full application with income and ID documents; the lender runs a hard credit check and instructs a valuation.
5. Valuation and (your own) survey — the lender values the property for their security; you arrange your own condition survey separately.
6. Mortgage offer issued — usually valid for 3–6 months.
7. Conveyancing, exchange and completion — legal work, then exchange (you're committed, and need buildings insurance from this point) and completion (you get the keys). See how long buying takes.

When to use a broker

You can go direct to a lender, but a single bank only shows you its own range. A whole-of-market mortgage broker compares across lenders, knows which are most generous with your income type or credit history, can access deals not offered direct, and handles the paperwork. Many are fee-free, paid by the lender. For most buyers — especially the self-employed, those with adverse credit, or anyone wanting a higher income multiple — a broker earns their keep. Our calculators are the right place to explore the numbers; a regulated broker is the right place to get an actual, personalised recommendation.

Common mistakes to avoid

• Treating the deposit as the whole cost. Keep a separate completion buffer — see the full cost of buying.
• Chasing the headline rate. A low rate with a big fee can cost more than a slightly higher fee-free deal — compare total cost over the fixed term.
• Not clearing debt before applying. Around £500/month of commitments can cut your borrowing by £100,000+.
• Landing the wrong side of an LTV threshold. A whisker over 90% LTV can cost you the 90% rate — a little more deposit can pay for itself.
• Skipping the survey to save a few hundred pounds — often the costliest saving of all.
• Only asking one lender. You can't know you've got a good deal without comparing.

The short version: your rate is driven mostly by your deposit (LTV), your borrowing by income and affordability, and your total cost by the fees and taxes around the mortgage. Get those three right — a bigger deposit where you can, debts cleared, and the full cost budgeted — and you're in a strong position. Use the calculators to model your own numbers, and a regulated broker to turn them into an offer.

Frequently asked questions