When selecting a mortgage, the term (the length of the loan) is one of the most important decisions you will make. The vast majority of homebuyers choose between a 30-year fixed-rate mortgage and a 15-year fixed-rate mortgage.
The 30-Year Mortgage
The 30-year mortgage is the standard in the United States. It stretches your repayment over 360 months.
Advantages:
- Lower Monthly Payment: Because you have twice as long to pay back the principal, the required monthly payment is significantly lower.
- Flexibility: You can choose to pay the minimum when cash is tight, or make extra payments when you have surplus income.
- Purchasing Power: Lower monthly payments mean you can qualify for a larger loan amount, allowing you to buy a more expensive home.
Disadvantages:
- Massive Total Interest: You pay interest for 30 years. The total interest paid is often double or triple what it would be on a 15-year loan.
- Slower Equity Build: Because early payments are almost entirely interest, it takes a decade to build meaningful equity.
- Higher Interest Rates: Lenders view 30-year loans as riskier, so they usually charge interest rates that are 0.5% to 1.0% higher than 15-year loans.
The 15-Year Mortgage
A 15-year mortgage compresses the repayment into 180 months.
Advantages:
- Huge Interest Savings: You pay less than half the total interest compared to a 30-year loan.
- Lower Interest Rate: Lenders offer lower rates for shorter terms.
- Fast Equity: Your payments are large and attack the principal immediately. You build equity rapidly and own the home free and clear in half the time.
Disadvantages:
- High Monthly Payment: The monthly payment is substantially higher (usually 40-50% higher than a 30-year loan).
- Strict Commitment: You must make the higher payment every month, regardless of job loss or financial emergencies.
- Opportunity Cost: The extra cash tied up in the mortgage payment cannot be invested in the stock market or retirement accounts.
A Real Comparison
Let's look at a $300,000 loan.
| Metric | 30-Year (at 6.5%) | 15-Year (at 5.75%) |
|---|---|---|
| Monthly P&I Payment | $1,896 | $2,491 |
| Total Interest Paid | $382,633 | $148,458 |
| Total Cost of Loan | $682,633 | $448,458 |
Run Your Own Comparison
Use our Mortgage Calculator to compare a 15-year and 30-year term for your specific home price.
The Compromise Strategy
Many financial advisors recommend getting a 30-year mortgage for the safety of the lower required payment, but treating it like a 15-year mortgage by voluntarily making extra principal payments every month. You won't get the slightly lower interest rate of a true 15-year loan, but you gain massive financial flexibility.