The key difference
With a fixed rate mortgage, your interest rate — and therefore your monthly repayments — stays the same for a set period, regardless of what happens to interest rates in the wider economy. With a tracker mortgage, your rate moves up and down in line with the Bank of England base rate (plus a fixed margin set by your lender).
Fixed rate mortgages explained
Fixed rates are the most popular choice in the UK. The overwhelming majority of new mortgages taken out are fixed rate — typically for 2 or 5 years, though 3 and 10-year fixes are also available.
Advantages
- Complete certainty — you know exactly what you'll pay each month
- Protected against rate rises during the fixed period
- Easier to budget, especially useful for first time buyers
Disadvantages
- If rates fall, you're locked into a higher rate
- Early repayment charges (ERCs) apply if you exit early — typically 1–5% of the loan
- Slightly higher rates than trackers at the time of writing in most market conditions
Tracker mortgages explained
Tracker mortgages follow the Bank of England base rate plus a set margin. For example, a "base rate + 1.5%" tracker would currently cost around 5.75% (if base rate is 4.25%), but would drop if the base rate falls.
Advantages
- If the Bank of England cuts rates, your monthly payments fall automatically
- Often no early repayment charges — giving you flexibility to switch or overpay
- Can be cheaper than fixed rates when base rate falls
Disadvantages
- Your repayments can rise if the base rate increases
- No certainty — harder to budget
- Higher risk for those with tight affordability margins
What about the current market in 2026?
The Bank of England base rate stands at 4.25% in early 2026, having been cut from its 5.25% peak. Markets are pricing in further gradual cuts through 2026 and 2027. In this environment:
- A tracker could benefit you if cuts materialise as expected
- A short-term fix (2 years) lets you benefit from lower rates sooner when you come to remortgage
- A 5-year fix offers certainty but may mean you're locked into today's rates if they fall significantly
💡 The 2-year vs 5-year fix debate is one of the most common questions mortgage advisers face right now. The right answer depends on your personal circumstances, risk appetite, and how long you plan to stay in the property.
Which should I choose?
There's no universally correct answer — it depends on your situation:
- Prioritise security: Choose a 2 or 5-year fix
- Believe rates will fall significantly: Consider a tracker (especially one with no ERC)
- Planning to sell or move within 2–3 years: A tracker with no ERC avoids penalties
- Tight budget with little margin for rises: Fix — certainty is worth a slight rate premium
A whole-of-market mortgage adviser will model both scenarios against your specific loan size, term, and personal circumstances — and give you a clear recommendation.