Fixed vs Variable Rate Mortgages: How to Choose the Right One for Your Situation

Every UK mortgage falls into one of three categories. Understanding what you're signing up for is half the battle.

Fixed rate locks your monthly payment for a set period — typically two or five years. The rate doesn't change regardless of what the Bank of England does. In March 2026, the average 2-year fixed rate is 4.30% and the average 5-year fixed is 4.44%. The best deals are sharper: Santander offers 3.63% on a 2-year fix at 60% LTV with a £749 fee, and Barclays has a 5-year fix around 3.85%.

Tracker rate follows the Bank of England base rate by a set margin. A "base rate + 0.60%" tracker at today's 3.75% base rate charges you 4.35%. If base rate drops to 3.50%, your rate falls to 4.10%. If it rises to 4.00%, you pay 4.60%. The link is mechanical and transparent. Nationwide's best 2-year tracker is currently 4.64% at 60% LTV with no fee.

Standard variable rate (SVR) is your lender's default rate — what you revert to when your fixed or tracker deal ends. The average SVR in March 2026 is a punishing 7.15%. Some lenders charge even more: Aldermore's SVR sits at 8.38%. Staying on SVR is almost never the right choice. See our mortgage hub for current deal comparisons.

A fourth option — discounted variable rate — tracks the lender's SVR minus a fixed discount rather than tracking the base rate directly. These are less transparent because the lender can change their SVR at will. Trackers pegged to the BoE base rate give you a guaranteed relationship; discounted deals don't.

Fixed rates aren't free insurance. You pay a premium for certainty — and in March 2026, that premium is significant.

The best 2-year fixed rate (3.63%) looks cheaper than the best 2-year tracker (4.64%). But context matters. That fixed deal comes with a £749 product fee and requires 60% LTV or better. On a £200,000 mortgage, the fee adds 0.37% to the effective first-year cost.

More importantly, fixed rates price in the market's expectation of where rates are heading. A 5-year fixed at 4.44% tells you the market expects base rate to average around 3.75–4.00% over the next five years. If rates fall faster than expected, you're locked in above the market.

Early repayment charges (ERCs) are the hidden cost. Leave a 5-year fix after year two and you'll typically pay 3–5% of the outstanding balance — potentially £6,000–£10,000 on a £200,000 mortgage. Life changes — job moves, divorce, inheritance — don't trigger exemptions. The FCA's mortgage conduct rules require lenders to disclose ERCs upfront, but many borrowers still don't read the fine print.

Product fees vary wildly too. Some lenders offer lower rates with higher fees (£999–£1,499), while others charge no fee at a slightly higher rate. On a £150,000 mortgage, a £999 fee adds 0.33% to the effective first-year rate. On a £400,000 mortgage, the same fee is just 0.12%. Higher borrowing amounts dilute fee impact — so fee-laden deals suit larger mortgages.

For first-time buyers navigating these decisions, our first-time buyer mortgage checklist covers the full journey from deposit to completion.

Variable rates — whether trackers or discounted variable — give you flexibility and potential savings. The cost is uncertainty.

On a £200,000 repayment mortgage over 25 years, a 0.25% base rate cut saves you roughly £28 a month on a tracker. Two cuts in 2026 would save £56 monthly — £672 across the year. But a 0.25% rise adds the same amount.

The Bank of England base rate history tells the story of that risk. In the 18 months from December 2021 to August 2023, the BoE raised rates from 0.25% to 5.25% — the fastest hiking cycle in decades. <a href="/posts/dont-panic-buy-a-fixed-mortgage-trackers-are-cheaper-and-the-market-is-pricing">Tracker mortgage</a> holders saw their payments nearly double. Then came the reversal: four cuts from August 2024 brought base rate down to 3.75% by December 2025.

Tracker mortgages typically have lower or no exit fees, making them more flexible. If you expect to move house, remortgage, or make large overpayments, a tracker gives you freedom that a fixed deal doesn't. The question is whether that flexibility is worth the payment volatility.

One often-overlooked advantage: tracker rates respond immediately to cuts. When the BoE cut from 4.00% to 3.75% in December 2025, tracker holders saw their next payment fall automatically. Fixed-rate borrowers had to wait until their deal expired — or pay an ERC to escape.

Forget trying to predict interest rates. The Bank of England's own forecasters regularly get it wrong. Instead, choose based on your personal circumstances.

Choose fixed if:

• Your household budget has little slack — you need to know exactly what you'll pay each month
• You're stretching to afford the property (high LTV, high debt-to-income)
• You have a fixed income or are about to take maternity/paternity leave
• You sleep badly when markets are volatile
• You're locking in for 5 years and want to forget about it

Choose a tracker if:

• You have a financial buffer — at least 3 months' mortgage payments in savings
• You want to make significant overpayments without ERC penalties
• You plan to move or remortgage within 2–3 years
• You believe the rate-cutting cycle has further to run
• Your income is variable and you can absorb payment swings

The stress test: Take your mortgage balance and calculate the payment at base rate + 2%. If you could still afford that — comfortably, not desperately — a tracker is a reasonable choice. If that number keeps you awake, fix. The FCA's responsible lending rules require lenders to stress-test at higher rates, but running your own numbers gives you personal clarity.

For higher earners, an offset mortgage offers a middle ground — variable rate, but your savings reduce the balance you pay interest on. And our mortgage affordability calculator lets you model payments at different rates.

The MPC meets on 19 March 2026 to set the base rate. Markets currently price in a hold at 3.75%, though the Iran conflict and resulting oil price surge have complicated the inflation outlook. Traders are now split on whether the next move is a cut or — for the first time in over a year — a potential hike.

UK gilt yields provide another signal. The 10-year gilt yield stood at 4.45% in January 2026, down from 4.69% in September 2025 — suggesting bond markets expect rates to settle in the 4–4.5% range long-term.

What does this mean practically? If you're remortgaging now, fixed rates around 3.63–4.30% are competitive by historic standards — the 25-year average is around 5%. Locking in at these levels protects you against the geopolitical uncertainty that's currently roiling energy markets and inflation expectations.

But if you have a solid financial buffer and believe the BoE will resume cutting once the current turbulence passes, a tracker at 4.35–4.64% could save you money over two years — especially if base rate reaches 3.00–3.25% by late 2027 as some economists project.

For a deeper look at how much you can borrow at these rates, see our mortgage affordability guide. And if you're weighing whether to fix or stay variable on your existing deal, our fixed vs tracker debate presents both sides of the argument.

This article is for informational purposes only and does not constitute financial advice. You should seek independent financial advice before making any investment decisions.