Simple and transparent
How this calculator works
The simplified engine annualises remuneration, applies the resident tax bands and entered reliefs, subtracts previous deductions and spreads the remaining estimate over the remaining months.
Monthly Repayment FormulaM = P × r(1+r)ⁿ ÷ ((1+r)ⁿ − 1)
- M = monthly repayment
- P = loan amount
- r = monthly interest rate
- n = number of payments
What you’ll get
Monthly payment
See the main estimate immediately.
Useful context
Understand the result with a visual breakdown.
Planning summary
Compare inputs, assumptions and next steps.
