UK Mortgage Calculator 2026

How much can I borrow?

Most lenders will offer between 4× and 5.5× your gross annual income. The exact multiple depends on:

• Your credit score and history
• Your monthly outgoings and existing debt
• Your deposit size (higher deposits = better rates)
• Employment type — employed, self-employed, contractor
• The lender's individual criteria

A whole-of-market broker can compare all lenders to find who will lend you the most at the best rate.

What interest rate should I use?

UK mortgage rates in 2026 typically range:

• 2-year fixed: 4.0–5.0% (60% LTV) / 5.0–6.0% (90% LTV)
• 5-year fixed: 3.8–4.8% (60% LTV) / 4.8–5.8% (90% LTV)
• Tracker: Base rate + 0.5–1.5%

Try modelling at 2% above your expected rate to stress-test affordability — you want to know you could still afford it if rates rise.

First time buyer?

You may be eligible for schemes that increase what you can afford:

• Mortgage Guarantee Scheme — buy with a 5% deposit
• Shared Ownership — buy a share of a property
• Lifetime ISA — 25% government bonus on savings
• First Homes — discounted new-build properties

Remortgaging?

If your current deal is ending, now is a good time to plan ahead:

• Start looking 3–6 months before your deal expires
• Use the repayments tab to compare rates
• Check if your existing lender will offer a product transfer
• A broker can search the whole market, not just your current lender