Compare · Calculator 23
Remortgage Comparison Calculator UK | Rates, Fees and LTV
Compare two repayment mortgage deals across rates, product fees, cashback, early-repayment charges, overpayments, follow-on rates and loan-to-value thresholds.
1 Enter your figures2 Review assumptions3 Explore the result
Your figures
Saved locallyYour Money Profile
Create profile Optional. No account, cloud sync or tracking.Copies your mortgage balance, estimated property value and remaining term.
Your entries stay in this tab and are not sent to Money Considered. A shareable link includes only the assumptions shown in its URL.
Lower modelled cost over the comparison period
Deal A by £1,893£51,470 of modelled interest and net fees over 5 years. This is a cost comparison, not a product recommendation.Deal A first payment£1,473/mo£51,470 modelled cost
Deal B first payment£1,506/mo£53,363 modelled cost
Cost crossoverMonth 21Cumulative interest plus net fees changes the ranking
Like-for-like deal comparison
Economic cost is interest plus product and other fees, early-repayment charge and less cashback. Capital repaid is not treated as a cost.
| Deal | First monthly outflow | Interest | Net fees and ERC | Economic cost | Capital repaid | Balance at exit | Exit LTV |
|---|---|---|---|---|---|---|---|
| Deal A | £1,473 | £50,471 | £999 | £51,470 | £37,902 | £212,098 | 53.0% |
| Deal B | £1,506 | £53,363 | £0 | £53,363 | £36,991 | £213,009 | 53.3% |
LTV threshold
Current estimated LTV: 62.5%
would reduce the balance to an estimated 60% LTV today. Check whether a lender actually offers a better rate at that band before using cash; thresholds and valuations differ.
Rate stress
If every entered rate were one point higher
This is a mechanical sensitivity, not a forecast.
Cash flow is not the same as cost.
Over the period, Deal A uses £89,372 of modelled cash and Deal B uses £90,354. A higher payment may repay more capital rather than make the deal more expensive, which is why the primary comparison isolates interest and net fees.
Assumptions used
- Both deals start from the same mortgage balance and use a capital-and-interest repayment structure.
- Interest is calculated monthly. Lenders may use daily interest and different payment dates.
- The initial contractual payment amortises the loan over the remaining term. It is recalculated if the entered follow-on rate begins within the comparison window.
- Monthly overpayments are assumed permitted and are applied after the contractual payment; product limits and early-repayment charges on overpayments are not checked.
- The entered property value stays constant. A lender’s valuation and LTV bands can differ.
- Eligibility, affordability, porting, offset features, interest-only borrowing, incentives with conditions and advice costs outside the entered figures are not assessed.
Use a lender’s European Standardised Information Sheet or mortgage illustration for the final comparison. Check every fee, follow-on rate, overpayment rule and early-repayment charge.
Common questions
Remortgage comparison FAQs
How should I compare two remortgage deals?
Use the same mortgage balance, remaining term and realistic comparison period. Include product, legal, valuation and broker fees, cashback, any early-repayment charge, overpayments and a follow-on rate where the comparison extends beyond the initial deal.
Why is the lowest mortgage rate not always the cheapest deal?
A lower rate can be outweighed by a large product fee over a small balance or short holding period. The lab compares interest plus net fees and shows whether cumulative costs cross over during the selected period.
Should I add the product fee to the mortgage?
Adding it avoids an immediate cash payment but increases the loan and normally means paying interest on the fee. The lab adds the fee to the opening balance when selected, while still counting the fee itself as an economic cost.
What is the remortgage break-even month?
It is the first modelled month when the cumulative ranking of interest plus net fees reverses. It helps test whether a higher-fee, lower-rate product has enough time to recover its upfront cost. No crossover means one deal remains lower cost throughout the entered period.
Why does the calculator separate cash outflow from economic cost?
Part of a repayment mortgage payment reduces debt and builds equity; it is not an expense in the same way as interest or a fee. Cash outflow matters for affordability, while interest plus net fees is the cleaner product-cost comparison.
How do LTV bands affect remortgage rates?
Lenders commonly price products in loan-to-value bands, but the exact thresholds and rates vary. The lab shows cash needed to reach the next common band down to 60%. A lender valuation, eligibility and an actual product quote determine whether that produces a saving.
Does the calculation include early-repayment charges?
It applies the entered charge for leaving the current deal to both new products. It does not calculate future product-specific ERC schedules or charges triggered by overpayments, so check each mortgage illustration.
Can this calculator tell me which mortgage to choose?
No. It identifies the lower modelled cost under the entries. Affordability, eligibility, rate risk, flexibility, portability, advice needs and personal plans can matter more than a small cost difference.