Refinance a personal loan when it pays — fees vs a lower rate

Refinancing a personal loan means replacing an existing unsecured balance with a new personal loan — usually hoping for a lower rate or a more manageable monthly figure. This guide is about that consumer-credit decision only. It is not about mortgages, property remortgage, or secured home loans. LoanCalc Lab’s refinance tools model personal-loan cash flows under stated assumptions; they do not approve credit and they do not say whether any particular person ought to refinance.

The headline rate cut is the easy part. Arrangement fees, early-repayment charges on the old agreement, a longer new term, and credit checks can all change the maths. Worked EXAMPLEs below use Loan A (£8,500 · 24.9% · 48 months · £0 fee) and Loan B (£12,000 · 16.9% · 60 months · £195 fee) to show when a fee erases the apparent benefit.

New loan quotes move with the wider level of interest rates, which is set by Bank Rate rather than by the Budget. Our guide to what the UK Budget means for borrowers explains the difference and the current forecasts.

Who this guide is for — and who it is not for

This guide is for readers comparing an existing personal-loan schedule with a lower-rate refinance that may carry a fee. Use the refinance break-even calculator with the same EXAMPLE inputs.

It is not for remortgage product switching, personalised advice to refinance, or a credit offer. LoanCalc Lab is not a lender or broker. EXAMPLE figures are illustrative only.

What “pays” means in break-even terms

Two different questions often get mixed up. First: does the new monthly payment fall, and if so, how many months until fee costs are recovered from that monthly saving? Second: over the full remaining life of the debt, is total interest plus fees on the new loan lower than the interest left on the current one? Cashflow break-even can look attractive while lifetime cost is worse — especially if the new term is stretched. Lifetime saving can look positive while the fee break-even sits near the end of a short remaining term, so the refinance never has time to earn its keep.

A simple fee break-even when the monthly payment falls is:

break-even months ≈ fees ÷ monthly saving

“Fees” here should include the new arrangement or product fee and any early-settlement or exit charge on the loan being replaced. Monthly saving is current EMI minus new EMI under the same principal (or the remaining balance being refinanced). If monthly saving is tiny or negative, the fee is not recovered from payment relief alone — you then rely entirely on lower lifetime interest, which is where a short leftover term often fails.

Worked EXAMPLE — Loan A vs a fee-bearing refinance

All figures below are labelled EXAMPLE. They are illustrative only — not a live quote, not a credit offer, and not a recommendation to refinance or to stay put.

• EXAMPLE Loan A (current): £8,500 principal · 24.9% EXAMPLE annual rate · 48 months · £0 arrangement fee
• EXAMPLE refinance: same £8,500 · 14.9% EXAMPLE annual rate · 48 months · £195 arrangement fee

Under LoanCalc Lab’s reducing-balance model, EXAMPLE Loan A has a monthly payment of about £281.36 EXAMPLE, total repayable ≈ £13,505 EXAMPLE, and total interest ≈ £5,005 EXAMPLE.

The EXAMPLE refinance at 14.9% has a monthly payment of about £236.13 EXAMPLE, total interest ≈ £2,834 EXAMPLE, plus the £195 EXAMPLE fee. Compared with staying on Loan A for the full 48 months:

• Monthly saving ≈ £45.23 EXAMPLE (£281.36 − £236.13)
• Interest saving ≈ £2,171 EXAMPLE before the fee
• Net lifetime saving after the £195 fee ≈ £1,976 EXAMPLE
• Simple fee break-even ≈ 5 months EXAMPLE (ceil of £195 ÷ £45.23)

In this EXAMPLE the rate cut is large and the remaining term is long, so the fee is recovered quickly and lifetime maths still looks favourable under the stated assumptions. That is the best-case shape of a refinance story — not a template for every balance. Change the rate gap, the fee, or how many months are left, and the same £195 can tell a different story.

Run the same inputs in the refinance break-even calculator for monthly saving, break-even months and lifetime saving. Pair it with the APR / true cost calculator when you want a fee-aware view of effective yearly cost on a single product, not just a side-by-side refinance comparison.

When fees erase the benefit — two counter-EXAMPLES

Counter-EXAMPLE 1 — modest rate cut, same fee. Keep EXAMPLE Loan A and refinance to 23.9% EXAMPLE for 48 months with the same £195 EXAMPLE fee. Monthly saving shrinks to about £4.72 EXAMPLE; interest saving before the fee ≈ £226 EXAMPLE; after the fee ≈ £31 EXAMPLE. Fee break-even stretches to about 42 months EXAMPLE — almost the whole term. A one-point cut barely covers a mid-hundreds fee.

Counter-EXAMPLE 2 — large rate cut, short time left. After 36 months on EXAMPLE Loan A, about £2,962 EXAMPLE and 12 months remain. Refinance that stub to 14.9% EXAMPLE for 12 months with a £195 EXAMPLE fee. Monthly saving ≈ £14.17 EXAMPLE; cashflow break-even ≈ 14 months EXAMPLE — longer than the stub. Lifetime interest saved ≈ £170 EXAMPLE, so after the fee the refinance shows a small lifetime loss (~£25 EXAMPLE). The lower rate is real; the fee still wins when remaining interest is thin. Always price fees against remaining interest, not day-one full-term interest.

EXAMPLE Loan B — fee already on the product

Site EXAMPLE Loan B: £12,000 · 16.9% EXAMPLE · 60 months · £195 EXAMPLE arrangement fee. Even without a refinance, that fee can mean less cash in hand than the face principal — so EMI alone understates true cost. See fees, APR and true cost.

As a refinance target: a current EXAMPLE of £12,000 at 22.9% over 60 months (£0 fee) pays about £337.55 EXAMPLE / month (interest ≈ £8,253 EXAMPLE). Moving to Loan B drops the EMI to about £297.06 EXAMPLE (saving ≈ £40.49 EXAMPLE); after the £195 fee, full-term maths can still favour the switch. If only ~18 months remain on a smaller balance, the same £195 can erase most of the rate cut — same lesson as Counter-EXAMPLE 2. Add any early-settlement charge from early settlement on personal loans into the fee pot before trusting break-even months.

Term stretch, early settlement and credit checks

Refinancing into a longer term can drop the monthly payment even when the rate is unchanged — and total interest usually rises. Treat a lower EMI that comes from more months as a cashflow choice, not automatically as a cheaper loan. Compare remaining interest on the current schedule with interest plus fees on the new schedule at the new term.

Early settlement on the old loan may carry a charge or a limited rebate of future interest, depending on the agreement and UK consumer-credit rules for that product. Add any exit cost to the refinance “fees” pot before judging break-even. A new application may also trigger a credit search; eligibility and the rate you are actually offered can differ from an illustrative EXAMPLE rate on a calculator.

APR, total charge for credit, and public guidance

In the UK, regulated consumer credit uses an APR that reflects the total charge for credit under prescribed assumptions. The FCA’s Consumer Credit sourcebook sets out how that charge and APR are determined (FCA Handbook, CONC App 1). MoneyHelper stresses comparing APR and total repayable — not a headline rate alone (MoneyHelper — Options for borrowing money). LoanCalc Lab’s tools are illustrative companions to those disclosures, not a substitute for pre-contract information.

Practical checklist

• Compare personal-loan refinance with personal-loan refinance only — not a mortgage or secured remortgage product
• Put arrangement fees and any early-repayment / exit charge into one “fees” total
• Compare remaining interest on the current loan with interest + fees on the new schedule; check fee break-even months fit inside the term
• Watch for term stretch that lowers the EMI while raising lifetime interest; calculators do not approve credit or guarantee a rate

Try the calculators

For EXAMPLE Loan A or Loan B inputs, start with the refinance break-even calculator. Change rate, fee and term one at a time to see when monthly saving, break-even months and lifetime saving flip sign. Use the APR / true cost calculator for a fee-adjusted view of a single offer. Clearer cost maths under stated assumptions — not a sales pitch to refinance.

What the figure is not

Break-even months and interest-saved figures here are labelled EXAMPLE. They are not a refinance quote, not early-settlement maths from your current lender, and not advice to switch. Check both lenders’ disclosures before you apply.

Sources

Product-norm wording only (no scraped rate tables): MoneyHelper — credit and debt; FCA — consumer credit. Figures on this page are labelled EXAMPLE and are not a quote. Last checked 28 September 2026.

Disclaimer

This guide and all EXAMPLE figures are illustrative only. They are not personalised financial advice, not a credit offer, and not a recommendation to refinance, to stay on an existing loan, or to take any new credit. LoanCalc Lab is not a lender. Rates, fees, early-settlement terms, day-count conventions and eligibility vary by product and lender. Always read the lender’s disclosure and regulated pre-contract information for your circumstances before you borrow or settle early.