First-Time Buyer Savings Calculator
See how your deposit grows with a Lifetime ISA bonus and interest, and how close you are to your target.
Calculate Lifetime ISA savings
What is this calculator?
This annuity calculator works out the level monthly repayment and total interest on a repayment loan using the standard annuity (PMT) formula.
With an annuity loan the payment stays the same every month; early on more of it is interest, and later more is capital.
How to use this calculator
- Enter the required details in the form above.
- Click the “Calculate” button.
- Review the results and compare your options.
- Download the result as CSV or share it as a link.
Frequently asked questions – First-Time Buyer Savings Calculator
The calculator uses standard financial formulas – the annuity (PMT) formula for loans and the compound interest formula for savings. Results are indicative; a lender's or creditor's final figure may differ slightly, for example because of rounding conventions.
Yes. Every calculator on InterestCalc.co.uk is completely free, with no sign-up or registration. You can use it as many times as you like.
Your calculations are saved only in your own browser (local storage) so you can come back to them. Nothing is sent to a server or shared with third parties.
Yes. There's a “Share result” button that creates a link to your calculation, and you can export a repayment schedule as a CSV file for Excel.
A lender's final offer can include individual terms – a personal rate, fees or a rate cap – that a general calculator can't know. Use the result as an indicative comparison figure and always ask the lender for a written quotation.