Purchase and financing
Fixed-rate loan length, explained
The fixed-rate loan length is the number of years in the plan for paying back the home loan. A 30-year loan usually has 360 monthly payments. Fixed-rate means the interest rate does not change during the loan. Your property taxes, home insurance, and other home costs can still change.
Published and maintained by Kevin Song for Your Home Cost. Last reviewed: . How guides are reviewed.
5 cited sources
Why it changes your estimate
A shorter term spreads repayment over fewer months, so the principal-and-interest payment is usually higher, but total interest is usually lower. A longer term usually lowers that part of the monthly payment but keeps money borrowed longer, which generally increases total interest.
What to enter
Enter the exact term shown in the lender's offer. Fifteen, 20, and 30 years are common; choose one from the suggestion list or type another whole-year term. A loan term is not a promise to live in the home that long; selling, refinancing into a new loan, or paying the balance early can end it sooner.
Good to know
The Federal Housing Finance Agency (FHFA) benchmark is the count-weighted average original term for U.S. first-lien home-purchase mortgages in its National Mortgage Database, a nationally representative 5% sample. Count-weighted means each mortgage contributes as a loan rather than a large balance automatically counting more; original term means the repayment schedule when the loan began, not how long borrowers actually kept it. The Consumer Financial Protection Bureau (CFPB) separately says most homebuyers choose 30 years, compares that with 15 years, and notes that lenders may offer other terms. Those are national market context, not limits on an individual offer. Each term may carry a different rate. This calculator assumes a fully amortizing fixed-rate loan; it does not model an adjustable rate, balloon payment, or interest-only period. Taxes, insurance, and dues can still change, and the USDA guaranteed purchase program normally uses a 30-year fixed term.
Compare terms using real offers and household flexibility
Do not compare a 15-year payment at one rate with a 30-year payment at an assumed identical rate unless the exercise is explicitly a sensitivity test. Ask for term-specific quotes on the same day and include their points and fees. Then compare the required payment, cash to close, total scheduled interest, and the balance remaining after the number of years you realistically expect to keep the loan.
A shorter term commits the household to a larger required payment every month. Consider whether income variability, childcare, repairs, or other goals make that obligation uncomfortable even when the lifetime-interest figure looks attractive. Also ask whether the longer-term loan permits extra principal payments without a penalty; voluntary extra payments offer flexibility, but they do not turn the contractual payment into a shorter-term obligation or guarantee the same interest rate.
- Obtain separate, same-day quotes for every term being considered.
- Compare the expected balance at the likely sale or refinance horizon, not only lifetime totals.
- Confirm prepayment terms and keep required-payment flexibility in the household budget.
Worked example
For a $360,000 loan at 6.5%, the 30-year principal-and-interest payment is about $2,275 per month and lifetime interest is about $459,160 if every payment is made as scheduled. A 15-year term at the same rate is about $3,136 per month but about $204,478 in lifetime interest. Real offers may use different rates for different terms.
Sources and citations
These references support the definitions, planning guidance, and program rules above. A citation does not mean its publisher endorses this guide.
Original planning exercise
Price the required-payment commitment
Hold the mortgage at $320,000 and the note rate at 6.5% solely to isolate the term. Compare 15 and 30 years with no extra principal payments or refinancing. Real term-specific quotes may offer different rates.
Illustrative assumptions, not quotes or forecasts. Calculations by Your Home Cost; mortgage payment examples use the calculator's shared fixed-rate formula.
| Option or step | Calculation | Planning result |
|---|---|---|
| 30 years | 360 scheduled payments | $2,022.62/month; about $408,143.20 scheduled interest |
| 15 years | 180 scheduled payments | $2,787.54/month; about $181,757.20 scheduled interest |
What the comparison tells you
The shorter term raises the required principal-and-interest payment by $764.92 a month. The interest totals assume the loan is held for its full term and use rounded monthly payments; a lender's final payment may differ slightly. They are not a prediction of what someone who moves in five years will pay.
Evidence to collect
Ask for actual rate and fee offers for both terms. Use the lender's amortization schedule to compare the balance at your likely sale date if that is sooner than the full term.
Apply it in the calculator
Change only Loan length for a controlled term experiment, then run a separate comparison using each lender's actual rate and fees.
Original planning exercise added . Source-review dates above are maintained separately.