Buy-to-Let Mortgage Comparator (Interest-Only)
Buy-to-Let Mortgage Comparator (Interest-Only) calculator helps landlords compare buy-to-let mortgage offers and see which deal is cheapest over the fixed period. It’s designed for interest-only mortgages, where the monthly payment covers interest rather than repaying the loan.
The calculator shows:
- estimated monthly interest payment
- total cost over the fixed term (interest plus product fee)
- cost per year
- a clear indication of which offer is cheapest overall
This makes it easier to look beyond headline interest rates and understand the true cost of each deal during the fixed period. It’s ideal for comparing purchase, remortgage, or further advance options before speaking to a broker or lender.
Buy-to-Let Mortgage Comparator (Interest-Only)
Compare three fixed-rate offers over the fixed term and see monthly interest, product fee, total term cost and cost per year in one place.
1. Property and loan
Set the property value and loan-to-value to estimate the loan amount used across all three offers.
Estimated loan amount: —
2. Compare offers
Enter the fixed rate, fixed term and product fee structure for each mortgage offer.
Comparison summary
Use this to compare the cheapest fixed-term option and the gap to the next best deal.
What this suggests
This comparison focuses on the fixed term only, not the full mortgage lifetime.
Compare 3 fixed-rate offers over the fixed term (typically 2 or 5 years). Shows total cost + cost per year.
This calculator runs entirely in your browser. No data is stored or transmitted. It is designed for planning and comparison, not prediction.
