Variable Loan Calculator
Estimate loan payments as interest rates change
Educational tool only · Disclaimer
How this calculator works▼
Effective rate: Base rate + margin. This is the total interest rate you'll pay on your loan.
Payments: Calculated using the standard amortisation formula, assuming equal payments over the loan term.
Historical data: Base rate information is sourced from the Bank of England and updated monthly.
Enter valid loan details to see rate impact
Bank of England Base Rate
Track how the UK base rate has changed over time.
Current BoE Rate:3.75%
Last changed: 18 Dec 2025
Source: Bank of England
(Data may be outdated)
| Date | Base Rate (%) |
|---|---|
| 18 Dec 2025 | 3.75% |
| 7 Aug 2025 | 4.00% |
| 8 May 2025 | 4.25% |
| 6 Feb 2025 | 4.50% |
| 7 Nov 2024 | 4.75% |
How This Calculator Works
See how Bank of England base rate changes affect your variable rate loan. Enter your loan details and lender margin to model different rate scenarios.