// Source citations for the factual claims in this guide (kept out of the // rendered tree: flow-level MDX comments break Next scroll-on-navigation). export const sources = [ "All interest rates in this guide are illustrative, not current market or statutory figures. Worked comparison computed with the amortisation formulas in site/lib/remortgage.ts (monthlyPayment, balanceAfter, and the costOverDeal method, which nets out capital repaid so the figure is interest plus fees): £200,000 over 25 years at an illustrative 4.4% five-year fix = £1,100.34/mo; at an illustrative 4.7% two-year fix = £1,134.49/mo (£34.15/mo more, £819.53 over 24 months). Over a five-year window with a £999 fee per product: five-year route ≈ £42,439; two-year route with an unchanged 4.4% follow-on ≈ £44,676 (≈ £2,237 more); break-even follow-on rate ≈ 4.0%; follow-on at 3.4% saves ≈ £3,375; follow-on at 5.7% costs ≈ £9,597 more. Verified by calculation 2026-06-12.", "The £999 arrangement fee used throughout matches DEFAULT_ARRANGEMENT_FEE in site/lib/remortgage.ts. Early repayment charge ranges (commonly 1% to 5% of the balance, stepping down each year of the fix) describe typical UK deal structures and are illustrative, not statutory; always check your own offer document.", ];

Guide · 5 minute read · Updated 2 Jul 2026

Should I fix my mortgage for 2 or 5 years?

Fix for 5 years if you want certainty and expect to stay put; fix for 2 if you genuinely expect rates to fall and can absorb the risk of being wrong. The 2-year route is a bet, and it has to clear an extra set of fees to win.

What you are actually choosing between

Both products do the same thing: lock your interest rate, and therefore your monthly payment, for a set period. The difference is how often you are thrown back into the market.

A 5-year fix buys five years of payment certainty. Whatever happens to interest rates, your payment does not move, for better or worse.

A 2-year fix buys two years of certainty, then a decision. When it ends you remortgage onto whatever rates exist then, pay another arrangement fee, possibly another valuation and legal process, and if you do nothing you roll onto the lender's standard variable rate, which is usually much higher. The shorter fix is really a series of bets placed more often.

The rate gap is a forecast, not a discount

The two fixes usually carry different rates, and the gap tells you what lenders expect rates to do. When markets expect rates to fall, 5-year money is often priced slightly below 2-year money, because the lender is happy to lock you in at today's level for longer. When markets expect rises, the 5-year fix costs more. Either way, the headline gap is the market's forecast already priced in; you are not getting a bargain, you are choosing which side of the forecast to stand on.

That has an uncomfortable implication for the 2-year fixer: rates do not just need to fall, they need to fall by more than the market already expects, because the expected path is baked into both prices.

A worked comparison on a £200,000 mortgage

Take a £200,000 balance with 25 years left, a £999 fee per product, and illustrative rates of 4.4% for the 5-year fix and 4.7% for the 2-year (every rate here is illustrative, not a quote; check live deals before deciding).

The 5-year fix costs about £1,100 a month. The 2-year costs about £1,134, so you pay roughly £34 a month more, about £820 over the two years, plus a second £999 fee when you remortgage. Run your own figures through the mortgage repayment calculator to see the payment at any rate.

Now compare total cost (interest plus fees, with capital repaid netted out) over the full five years:

• Rates unchanged. If you remortgage after two years onto the same 4.4%, the 2-year route costs about £2,237 more. The higher rate plus the extra fee did the damage.
• Break-even. The follow-on rate needs to be roughly 4.0% or lower, about 0.4 points below today's 5-year price, just to draw level.
• Rates fall a full point. A 3.4% follow-on saves about £3,375 versus the 5-year fix. This is the payoff if the bet comes good.
• Rates rise a point. A 5.7% follow-on costs about £9,597 more, and your payment jumps to roughly £1,245.

Notice the asymmetry: in this illustration being wrong costs nearly three times what being right saves. The remortgage calculator runs exactly this stay-versus-switch comparison on your own numbers, including fees and break-even months.

Three personal factors that matter as much as the forecast

Moving plans. If you might move within five years, a long fix is riskier. Most fixes can be ported (moved to the new property), but porting is at the lender's discretion, you must pass their affordability checks again, and any extra borrowing is priced at current rates. If the move falls outside what the lender will approve, you face the early repayment charge instead.

ERC exposure. Leaving a fix early triggers an early repayment charge, commonly 1% to 5% of the balance, often stepping down each year. On £200,000 a 5% ERC is £10,000. A 2-year fix caps how long that exit penalty hangs over you; a 5-year fix stretches it.

Stress tolerance. Some people happily take payment risk for a shot at a lower rate. Others lose sleep. If a £150 monthly jump in 2028 would genuinely strain your budget, the certainty of the longer fix has real value that no spreadsheet captures. There are also 3-year and 10-year fixes if neither pole fits.

So which should you pick?

Choose 5 years if you value a known payment, plan to stay in the home, and would struggle if rates rose. Choose 2 years if you have a clear reason to expect rates below what the market already prices, can afford the upside risk, or know your circumstances will change soon. And whatever you fix, diarise the end date: rolling onto the SVR is the one outcome that loses under every scenario.

Common questions

Why is a 5-year fix sometimes cheaper than a 2-year fix?

Because fixed rates reflect what markets expect future rates to be, not just today's base rate. When markets expect rates to fall, lenders price long fixes below short ones, since locking you in at today's level for longer works in their favour. The gap between the two fixes is the forecast, already priced in.

What happens if I move house during a 5-year fixed mortgage?

Most fixes are portable, meaning you can move the deal to the new property, but porting is not guaranteed: you must pass the lender's affordability checks again, and any extra borrowing is priced at current rates as a separate slice. If porting fails or you switch lender, the early repayment charge applies.

Can I get out of a fixed rate mortgage early?

Yes, but usually at a cost. Early repayment charges commonly run from 1% to 5% of the outstanding balance, often stepping down each year of the fix, so leaving a 5-year deal in year one is the most expensive exit. Check your offer document for the exact schedule, and note most deals let you overpay around 10% a year penalty-free.

How much do rates need to fall for a 2-year fix to beat a 5-year fix?

Enough to recoup the higher rate you typically pay on the shorter fix plus the extra arrangement fee at remortgage time. In our illustrative £200,000 example (4.7% versus 4.4%, £999 fees), the follow-on rate after two years needed to be roughly 0.4 points below the original 5-year rate just to break even.

Is it better to fix for 2 or 5 years in 2026?

There is no universal answer, because both prices already reflect market rate expectations. The honest framing: 5 years buys certainty and one set of fees, 2 years buys flexibility and a bet that rates will undershoot the forecast. Your moving plans, ERC tolerance and budget headroom matter more than anyone's rate prediction.

Guidance and education, not regulated financial advice.