Fixed vs Tracker Mortgage: Which Should You Choose?
Verdict
The fix (4.5%) is cheaper than the current tracker (5.24%).
Confidence: High
Break point: Tracker wins only if BOE cuts rates by 0.74pp or more.
The rate decision
The tracker starts cheaper at current BOE rates — but every 0.5% rise erodes that advantage and the fixed rate gives certainty.
The fixed rate of 4.5% provides a clear advantage over the current tracker rate of 5.24%, as it guarantees consistent monthly payments, eliminating the variability risk associated with fluctuating interest rates. By locking in the lower fixed rate, borrowers can effectively budget their finances without the uncertainty of potential rate increases that could arise with the tracker. This stability not only enhances financial planning but also mitigates the risk of future payment shocks, making the fixed rate a more prudent choice for those seeking long-term security.
The rate backdrop
The fixed rate locks in certainty; the tracker passes every BOE move directly to your monthly payment.
In the current Bank of England base rate environment, where the fixed rate stands at 4.5% compared to a tracker rate of 5.24%, borrowers face significant tracker risk due to potential future rate hikes. With the BOE's monetary policy indicating a cautious approach to inflation, the likelihood of further increases in the base rate could render tracker mortgages increasingly expensive over time. Consequently, opting for the fixed rate provides a more stable and cost-effective choice, shielding borrowers from the volatility associated with tracker rates in an uncertain economic landscape. This backdrop underscores the financial prudence of locking in a lower fixed rate now, rather than exposing oneself to the unpredictability of a tracker.
Worked example
Assumptions (illustrative): £200,000 mortgage · Fixed 4.5% vs Tracker 5.24%
| Option | Monthly payment | After 0.5% rise |
|---|---|---|
| Fixed (4.5%) | £1,112 | £1,112 (unchanged) |
| Tracker (5.24%) | £1,197 | £1,257 |
At current rates, the fixed is cheaper by £86/month. A 0.5% BOE rise would move the tracker to £1,257/month.
When this flips
This flips only when BOE rates move by more than 2.0pp in the direction that disadvantages the current choice. The certainty value of the fixed rate at 4.5% is high.
What to do next
| Your situation | Action | Why |
|---|---|---|
| Rates expected flat | Tracker likely cheaper | Effective tracker rate below fixed — no rate move needed to win |
| Rates expected to rise | Fix now | Each 0.5% rise erodes the tracker advantage |
| Cashflow sensitive | Fix for certainty | Monthly payment volatility is a real cost for stretched budgets |
| Rates expected to fall | Tracker wins clearly | Every cut reduces your payment automatically |
Sources and provenance
- boe_mpr_2026_02.pdf
- OECD_EO_116.pdf
- ECB_Economic_Bulletin_2024_06.pdf
Data as of: 2026-04-29
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