Mortgage Rate Reset Calculator

This mortgage rate reset calculator shows what happens when your fixed-rate period ends and the loan is renewed at a new rate. With your remaining balance, the new rate and your current payment it calculates the time to payoff, the payment needed for a target term and the extra cost against the old rate.

Source: Wikipedia – Amortization calculator (level payment formula). Updated: .

from your loan statement or amortization schedule
the amount you want to keep paying after the reset
% a year
to compare the extra cost
% a year
your lender's offer or a forecast
years
for the balance and interest cost at the end of this period
years
until fully repaid; this gives the payment needed
My ToolboxYour inputs are saved in this browser only.

Result

With the same payment
debt-free after 301 mo. (≈ 25.1 yrs); balance after the fixed period 130,860.63
Payment for the target term
1,138.77 a month for 20 years (+228.18 compared with the old rate)
Interest cost in the new fixed period
Over 10 years, 70,860.63 of interest instead of 27,096.24 at the old rate (+43,764.39)
For comparison: old rate
At 2 % the loan would be repaid after 215 mo. (≈ 17.9 yrs)
If the rate turns out differently
New ratePayment for target termTime at the same paymentBalance after the fixed period
3.5 %1,043.93256 mo. (≈ 21.3 yrs)111,869.56
4.5 %1,138.77301 mo. (≈ 25.1 yrs)130,860.63
5.5 %1,238.20382 mo. (≈ 31.8 yrs)152,086.17
6.5 %1,342.03683 mo. (≈ 56.9 yrs)175,789.92
7.5 %1,450.07never – the payment does not cover the interest202,241.29
Level-payment loan with monthly interest (annual rate ÷ 12), fixed for the new period, without extra repayments or fees. Terms and renewal rules differ between countries and lenders; your lender's offer determines the actual rate.

How it is calculated

When a fixed-rate period ends, a large part of the loan is usually still outstanding – with 2 % initial repayment about three quarters after ten years. That remaining balance has to be refinanced or renewed, and the new rate can be much higher or lower than in the first contract.

What the calculator shows

Plan early

Renewal terms can often be locked in a year or more before expiry, usually with a rate premium. If you cannot raise the payment, extend the term; extra repayments lower the balance, and the loan calculator shows both. To compare switching lenders, use the debt consolidation calculator; the original financing is covered by the mortgage calculator.

Frequently asked questions

What is a mortgage rate reset?

The point at which a fixed-rate period ends and the remaining balance is renewed or refinanced at a new rate. You can stay with your lender or move to another.

How high will the new payment be?

For the same term it depends on the new rate. If the rate rises from 2 to 4.5 %, the payment for the same balance and term grows noticeably. The calculator shows the difference in money.

What happens if the payment does not cover the interest?

Then the balance does not fall but grows. You need to raise the payment or agree a longer term with higher repayments, otherwise the loan is never paid off.

When should I arrange the renewal?

At the earliest when the fixed period ends, though many lenders allow locking a rate up to a year or more before. Compare several offers, because a rate difference works over many years.

How much interest can a higher rate cost?

Compare the interest cost line with the old rate. On a balance of 180,000, going from 2 to 4.5 % adds several thousand in interest per year at the start of the new period.

Sources and legal basis

As of: · Editorial policy

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