Estimate payments when the mortgage rate changes after the first few years.
Use this calculator when your mortgage has different introductory rates for years 1, 2, and 3, followed by a variable rate. It estimates payments, total interest, extra-payment savings, and the remaining balance each year.
Home and loan details
amount
%
years
/month
Introductory interest rates
%/yr
%/yr
%/yr
Rate after year 3
%/yr
The lender's reference or standard variable rate.
%
Example: 7% base rate minus 1% gives a 6% loan rate.
Enter your mortgage details.
How the later rate works
The rate after year 3 is calculated as the base rate minus the discount. For example, a 7% base rate with a 1% discount gives an estimated mortgage rate of 6%.
Because the base rate may change, the real payment can rise or fall later.
Important note
This is a planning estimate. It assumes the rates entered remain unchanged during each period and recalculates the payment when the rate changes. Actual lender rules, fees, taxes, insurance, rate caps, and payment adjustments may differ.