15-Year vs. 30-Year Mortgage Refinancing: Total Interest Amortization Analysis

Editorial Review: Senior Mortgage Underwriting & Equity Desk • CFPB & TILA Compliant

Shortening your mortgage term from 30 years to 15 years yields dramatic lifetime interest savings, but increases mandatory monthly cash flow obligations.

1. $400,000 Loan Amortization Comparison

Loan StructureNote Rate (APR)Monthly Principal & InterestTotal Lifetime Interest Paid
30-Year Fixed Refinance6.75% APR$2,594 / mo$533,967 in total interest
15-Year Fixed Refinance6.00% APR$3,375 / mo$207,564 in total interest
Net Lifetime Savings-0.75% Rate Spread+$781 / mo obligation$326,403 Total Interest Saved
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Authored by the Home Loan Remortgage Editorial Directorate

Our editorial team comprises seasoned residential mortgage analysts, CFPB compliance specialists, and loan officers. We specialize in break-even refinancing models, home equity release mechanisms, and consumer lending protections.