When you refinance, the replacement loan has its own repayment schedule. Choosing a new 30-year term can move your scheduled payoff date farther away, even if the rate is lower.
Remaining term and new term are different
The remaining term is the number of scheduled payments still left on your current loan. The new term is the number of payments on the replacement loan.
For example, a 30-year mortgage starts with 360 monthly payments. If 60 scheduled payments have been made, the original schedule has 300 left, or 25 years. A new 30-year loan starts a new 360-payment schedule. In that simple example, its scheduled payoff is five years later.
Extra principal payments, payment changes or modifications can change the actual payoff timing. Check your servicer’s current information instead of relying only on the date you bought the home.
Why spreading repayment out can lower the payment
You are dividing repayment over more months. That can reduce the required monthly payment without reducing the rate. A rate decrease can reduce it further. The tradeoff is that you may carry debt and pay interest for longer.
Do not describe the entire payment drop as interest savings. Some of it may come from slower principal repayment.
Compare more than one new term
Use the same balance and holding period to compare your current loan with a replacement near the remaining term, a shorter term and a longer term. Enter the fees and rate for each actual offer rather than assuming they are identical.
Look at the required payment, scheduled payoff time, total remaining payments and balance at the date you expect to sell or refinance again. A larger payment may repay debt faster; a smaller one may give more monthly breathing room.
Extra payments are a separate choice
You may choose to pay additional principal, but an optional extra payment is not the same as the required payment. Confirm how your servicer applies it and whether your loan has a prepayment penalty.
The current calculator models entered extra principal on the current loan. It does not model optional extra payments on the new loan. Compare required-payment scenarios first and ask for a separate amortization schedule if you want to test extra payments on the replacement.
Read the result without guessing
A lower monthly payment describes a monthly change. A lower modeled cost over your chosen holding period includes payments, entered fees and debt remaining at that date. A lifetime comparison covers each loan through its own payoff, which may occur at different times.
Compare the terms with your numbers and check the methodology and exclusions. This is educational scenario analysis, not a prediction of qualification or a recommendation to refinance.