15-Year vs. 30-Year Mortgages: Balancing Cash Flow Against Interest

Choosing between a 15-year and 30-year fixed-rate mortgage comes down to a fundamental trade-off: short-term liquidity versus overall contract cost.

The 15-Year Path

A 15-year term features lower interest rates and amortizes twice as quickly. The primary downside is a significantly higher mandatory monthly payment, which restricts disposable income and reduces monthly budget flexibility.

The 30-Year Path

The 30-year mortgage offers lower baseline monthly payments, providing cash-flow protection during income disruptions. However, stretching repayment over 360 months dramatically increases cumulative lifetime interest expense.