Fixed vs Tracker vs Variable Mortgages: Which Type Suits You? (UK Guide)

When you take out a mortgage, you're not just choosing a lender — you're choosing how your interest rate behaves for the next two, five or more years. Fixed, tracker and variable-rate mortgages (including standard variable rate and discount deals) all work differently, and the right choice depends on how much payment certainty you want versus how much risk you're comfortable carrying. This guide explains what each type does, compares them side by side, and covers common mistakes.

The three main types, in plain English

Fixed-rate mortgages lock your rate for a set period — usually two, five or occasionally ten years. Payments stay the same for the deal. Once it ends, you move onto the lender's standard variable rate unless you remortgage or switch first.

Tracker mortgages move automatically with the Bank of England base rate, plus a set margin the lender adds. If the base rate rises, your rate and payment rise by the same amount; if it falls, so does your payment. Trackers usually run two or five years, sometimes the full term.

Variable-rate mortgages also covers the lender's standard variable rate (SVR) — where you land by default once a deal ends — and discount mortgages, a fixed discount off the SVR for an introductory period. The SVR isn't tied to the base rate by any formula; the lender changes it at will.

Fixed vs tracker vs variable — side by side

What happens when the Bank of England base rate changes

Trackers move directly with the base rate, reviewed roughly every six weeks by the Monetary Policy Committee. As of its most recent decision (18 December 2025), the base rate stood at 3.75% — it may have moved since, so check the Bank of England's own rate page rather than this guide.

Fixed payments don't move during the deal. SVR/discount rates aren't tied to the base rate by formula, though lenders often move them similarly. Nobody can reliably predict rate moves, so be wary of choosing a type purely on a forecast.

Which type tends to suit which situation

Fixed-rate deals suit people wanting a predictable payment — especially first-time buyers stretching affordability. Trackers suit people comfortable with payments moving either way, who check for a lower or no ERC. SVR/discount deals are rarely a deliberate long-term choice — usually where people land by default; their advantage is the lack of tie-in. None of this is a recommendation for your circumstances — a broker or regulated adviser can assess what suits you.

Early repayment charges — the catch with fixed and tracker deals

Most fixed deals, and many trackers, charge an ERC if you leave or overpay significantly during the deal — often 1%-5% of the balance, scaling down nearer the end.

Remortgaging UK: What It Actually Costs and When It's Worth It (2026) breaks down how ERCs are structured. Porting Your Mortgage When You Move House: How It Works (UK Guide) covers how taking your rate with you when you move can avoid the charge.

Mistakes people make choosing a mortgage type

• Fixating on the lowest rate without checking the arrangement fee.
• Assuming a tracker will automatically save money — rates can rise as easily as fall.
• Letting a deal lapse onto the SVR by accident.
• Not checking the ERC schedule before switching early.

How to Get a Mortgage in Principle UK 2026 — Complete Guide is a useful starting point.

The bottom line

Fixed gives certainty for a set period; tracker moves with the base rate either way; SVR/discount are lender-set variable rates usually without a tie-in. None is objectively better — it depends on your own risk appetite. A broker or regulated adviser can assess what suits you.

This guide is general information, not financial advice.