2-year vs 5-year fixed — cost scenarios

This is scenario framing, not a prediction of future Bank Rate or mortgage pricing. Use your own quoted rates in the calculators. Fees and early repayment charges (ERCs) still belong on the page before you treat a shorter or longer fix as “cheaper”. Last checked: 14 October 2026.

Illustrative 5-year horizon

• 5-year fix: one set of product and legal fees (if switching); payment known for five years; ERC may apply if you need to leave early (sale without porting, large overpay beyond allowance, etc.).
• 2-year fix rolled twice (then a third start): two or three rounds of product fees / legal costs possible across five years; re-fix risk at each deal end; shorter ERC windows each time.

Neither path is automatically better. A lower 2-year rate can still lose if each remortgage carries a four-figure fee stack, or if you drift onto a standard variable rate between deals. A 5-year fix can look expensive if you move home and face a long ERC — depending on portability and the offer wording.

EXAMPLE cues on the shared site house

Hold the EXAMPLE balance at £185,000 with 22 years remaining. Suppose you are comparing two labelled EXAMPLE new-deal rates after your current EXAMPLE 4.19% ends: a 2-year fix at 4.14% with £1,499 fees and £250 cashback, versus a 5-year fix at a slightly higher EXAMPLE rate — say 4.29% — with the same fee stack. The monthly gap can be modest; the decision often turns on how many times you pay fees over five years, and how long an ERC would lock you in.

On a single switch into the 2-year EXAMPLE 4.14% path, net fees after cashback are £1,249 (assuming no ERC). If you remortgage again at year 2 with a similar fee stack, another ~£1,249 can appear. A single 5-year switch pays the fee stack once. Those are EXAMPLE illustrations only — your quotes will differ. Sense-check monthly payments with the repayment calculator and total interest plus fees over the same horizon with the true cost tool (set comparison years to 5).

When a fixed is ending, use fixed rate ending and when to remortgage for calendar framing. For ERC method detail see how ERCs are calculated.

EXAMPLE five-year table: one 5-year fix vs a 2-year fix rolled

Same EXAMPLE house: £185,000, 22 years, capital repayment. Every rate below is a labelled EXAMPLE scenario, not a quote. Each switch costs £1,499 in fees less £250 cashback (£1,249 net). The 2-year path switches three times in five years (now, year 2, year 4); the 5-year path switches once. No ERC is assumed on either path.

Read the table this way: in this EXAMPLE the 2-year path pays less interest only while rates stay put, and the two extra fee rounds (£2,498 net) still leave it about £1,166 behind. Figures are rounded to the nearest pound.

Break-even: what re-fix rate makes the paths equal?

Hold the 5-year EXAMPLE at £38,063 of interest plus net fees. In this EXAMPLE the rolled 2-year path matches it only if both later re-fixes land at about 3.91%, roughly a quarter of a point below today’s EXAMPLE 4.14%. Above that, the single 5-year switch wins on cost; below it, the 2-year path does. To find your own break-even, run the true cost calculator once per path with your real fee stack and nudge the later rate until the totals meet.

If you move home mid-term

A 5-year fix is the riskier choice if a move in years 2–5 is plausible. If the product is portable and you can port it, the ERC usually doesn’t apply to the ported part, but the new property still has to meet the lender’s criteria and any extra borrowing is priced separately. If you can’t port, the ERC applies to the balance you redeem. On a typical stepped schedule an ERC of 3% in year 3 would be about £5,000 on this EXAMPLE balance, more than the cost gap in the table. How the methods work is in how ERCs are calculated, and what porting involves is in the porting glossary entry.

Sources

MoneyHelper and UK Finance provide independent process and market context. They do not tell you which fix length to choose.

ERC length versus re-fix frequency

A 5-year fix often carries a longer ERC schedule. That protects payment certainty and can raise the cost of moving home or making a large overpayment beyond any allowance. A 2-year fix usually frees you sooner — and exposes you to a new fee stack and a new rate when the deal ends. On the EXAMPLE £185,000 balance, even one extra remortgage round at ~£1,249 net fees after cashback is material over a five-year planning window.

Remortgage Lab does not forecast future rates. Build two scenarios with your own quotes: one 5-year product, and a 2-year product rolled with assumed fees at each switch. Compare total interest plus fees over the same horizon. Personal plans (sale, porting, overpaying) often dominate the pure cost maths — list them beside the sterling totals rather than hiding them.

Disclaimer

Scenario framing only — not a forecast and not personalised advice. Personal circumstances (moving plans, risk tolerance) often dominate pure cost maths.