A 15-year and a 30-year fixed mortgage can finance the same home but create very different cash-flow profiles. A shorter term generally requires a higher monthly principal-and-interest payment and can reduce total interest. A longer term generally lowers the required payment but keeps the balance outstanding longer.
Compare both terms
Use the same loan amount and current quotes for 15-year and 30-year options, then compare the required payment and total interest.
Open Mortgage Calculator →The basic trade-off
| Feature | 15-year fixed | 30-year fixed |
|---|---|---|
| Required monthly P&I | Higher | Lower |
| Time to scheduled payoff | 15 years | 30 years |
| Total interest at the same rate | Lower | Higher |
| Typical quoted rate | Often lower | Often higher |
| Monthly cash-flow flexibility | Lower | Higher |
Do 15-year mortgages always have lower rates?
No universal spread applies. The CFPB notes that shorter-term mortgages typically have lower rates, but the difference varies with market conditions and lenders. Compare same-day Loan Estimates rather than assuming a fixed percentage-point discount.
Why the monthly payment is higher
The same principal is being repaid over half as many scheduled years. Even with a lower interest rate, that faster amortization raises the required monthly principal-and-interest payment.
Why total interest can be lower
A shorter term reduces the number of months interest accrues and may also come with a lower rate. The exact savings depend on the loan amount and the actual rates offered.
What a 30-year term gives you
The lower required payment can leave more monthly cash available for emergency savings, retirement contributions, other debt, maintenance, or discretionary spending. You can sometimes make additional principal payments when cash flow allows, subject to the terms of the loan.
What a 15-year term gives you
The scheduled balance declines faster and the mortgage reaches maturity sooner if payments are made as agreed. The trade-off is the higher required payment and less flexibility during months when household cash flow is tight.
How to compare offers
- Get current quotes for both terms.
- Compare rate, APR, points, and lender credits.
- Compare the required monthly payment.
- Check how much cash would remain after housing and other obligations.
- Compare total interest over the period you realistically expect to keep the loan.
Bottom line
Neither term is universally better. The useful comparison is the one based on your actual quotes, expected holding period, required payment, and cash-flow needs.