Putting extra money toward your mortgage feels like a straightforward win — and often it is. But whether it's the right move depends on the rest of your financial picture. Here's what to understand before you start sending in extra payments.
How Extra Payments Actually Work
Every mortgage payment divides between principal (the amount you borrowed) and interest (the cost of borrowing). In the early years of most loans, the split leans heavily toward interest. When you pay extra — and specify that it should go toward principal — you reduce your balance faster, which means less interest accrues over the remaining life of the loan.
The compounding effect can be significant. Even modest additional payments, made consistently over several years, can shorten a 30-year loan by years and save a meaningful amount in total interest paid.
Common Approaches
One extra payment per year. A simple strategy is to make 13 full payments in a year instead of 12. You can do this as a lump sum — using a tax refund or bonus — or by adding one-twelfth of your monthly payment to each regular payment.
Biweekly payments. Instead of paying once a month, you pay half your monthly amount every two weeks. Because there are 26 bi-weekly periods in a year (not 24), this naturally results in one extra full payment annually. Check with your servicer before setting this up — some have formal biweekly programs; others require a manual workaround.
Before You Start
A few things worth confirming first:
- No prepayment penalty. Most modern mortgages don't have them, but it's worth verifying with your servicer.
- Specify "principal only." Extra payments not designated as principal reduction may simply be applied to next month's interest instead.
- Consider competing priorities. High-interest debt, an underfunded emergency fund, or limited retirement contributions may deserve that extra cash first. Extra mortgage payments are most powerful when your other financial foundations are solid.
When It Makes Sense
If your other financial priorities are in good shape, your mortgage rate is relatively high, and you have a long time horizon on the loan, extra payments are often a strong use of surplus cash. If you're weighing it against other options — investing, paying off other debt, building reserves — the math will vary.
