This is one of the most important financial decisions homeowners face, and most people choose based on which payment fits their budget today rather than which option builds wealth most effectively. Both approaches have merit. But you need the full picture first.
The average 30-year fixed mortgage rate in the US is 6.8% in 2026, according to Bankrate. The average 15-year fixed rate runs approximately 6.1% to 6.3%. That rate gap adds another significant layer to the comparison.
Monthly Payment Comparison: 30-Year vs 15-Year
On a $400,000 mortgage at current 2026 rates (6.8% for 30-year, 6.2% for 15-year), the 30-year payment is $2,607 per month in P+I versus $3,415 for the 15-year a difference of $808 per month. The 30-year borrower pays $538,446 in total interest over the loan life while the 15-year borrower pays $214,700 a saving of $323,746. The lower 30-year payment comes at a steep long-term cost.
| Darlehensbetrag | 30-Year @ 6.8% | 15-Year @ 6.2% | Extra/Month | Interest Saved |
|---|---|---|---|---|
| $300,000 | $1,955 | $2,561 | +$606 | $234,900 |
| $400,000 | $2,607 | $3,415 | +$808 | $313,200 |
| $500,000 | $3,259 | $4,269 | +$1,010 | $391,500 |
On a $400,000 loan, choosing a 15-year term saves over $300,000. That is enough to fund a retirement account, buy a second property, or pay for multiple children’s college educations.
Equity Build-Up: Which Loan Puts You Ahead Faster?
A 15-year mortgage builds equity roughly twice as fast as a 30-year mortgage in the early years. After 5 years on a $400,000 loan at 2026 rates, a 15-year borrower has paid down approximately $89,000 in principal while a 30-year borrower has paid down only $28,000. This equity gap matters for refinancing options, home equity lines of credit, and overall net worth. Faster equity also provides a larger safety buffer if home values decline.
| Year | 30-Year Balance | 15-Year Balance | Equity Advantage |
|---|---|---|---|
| Year 5 | $372,000 | $311,000 | +$61,000 |
| Year 10 | $339,000 | $194,000 | +$145,000 |
| Year 15 | $295,000 | $0 (paid off) | +$295,000 |
At year 15, the 15-year borrower owns their home outright. The 30-year borrower still owes $295,000 and has 15 more years of payments ahead.
From experience: A 38-year-old teacher was torn between a 30-year at $2,100/month and a 15-year at $2,820/month. The $720 monthly difference felt steep. When we mapped it out, the 15-year meant she would be mortgage-free at 53 as her kids headed to college. The 30-year would have her paying until age 68. She tightened discretionary spending, took the 15-year, and calls it the best financial decision she ever made.
When the 30-Year Mortgage Makes More Sense
A 30-year mortgage makes more sense than a 15-year in four situations: when income is variable or unstable (lower payment protects against lean months), when high-interest debt should be paid first (credit card debt at 24% costs more than the mortgage rate gap), when the $600 to $1,000 monthly difference will be consistently invested at returns higher than your mortgage rate, or when the higher payment would strain your budget to the point of financial stress or missed payments.
| $808/month Invested Instead | Return Rate | Value After 15 Years |
|---|---|---|
| Monthly investment | 5% | $213,400 |
| Monthly investment | 7% | $255,000 |
| Monthly investment | 10% | $336,800 |
The math favours the 30-year only if you actually invest the difference every month for 15 years a discipline most people do not maintain. The 15-year mortgage enforces savings through a legally binding obligation.
The Middle Path: Extra Payments on a 30-Year
Making extra principal payments on a 30-year mortgage produces outcomes closer to a 15-year while retaining payment flexibility. Adding $400 to $500 per month to a $400,000 30-year mortgage at 6.8% can cut the term from 30 years to approximately 20 years and save over $200,000 in interest while preserving the option to pay only the minimum during financial hardship. This flexibility is the main advantage of the extra-payment strategy over a true 15-year commitment.
Verwenden Sie die Tilgungsrechner für Kredite at ToolsTecique to model exactly how extra monthly payments change your payoff date and total interest cost.
From experience: A young couple planning to sell their starter home within 4 to 6 years asked whether to take a 15 or 30-year mortgage. The 15-year would have saved $127,000 over the full term but they were leaving in 5 years. Over 5 years, the 30-year cost them $12,400 more in interest. The 15-year cost $48,600 more in higher payments. Net result: the 30-year was $36,200 cheaper for their actual situation. Term matters but so does how long you stay.
Häufig gestellte Fragen
Q: Is a 15-year mortgage always better than a 30-year?
A: Not always. A 15-year is mathematically superior for borrowers who stay long-term with stable income and no high-interest debt. A 30-year suits buyers with variable income, significant other debt, or strong investment discipline. The right choice depends on your situation not a universal rule.
Q: How much more is a 15-year payment than a 30-year?
A: Typically 35% to 45% higher. On a $400,000 loan at 2026 rates, the difference is approximately $808/month. Use the Hypothekenrechner at ToolsTecique for your exact figures.
Q: Do 15-year mortgages have lower interest rates?
A: Yes. In 2026, the 15-year rate is approximately 0.5% to 0.7% lower than the 30-year equivalent, per Bankrate. This rate advantage makes the total interest savings even larger than the payment comparison alone suggests.
Q: What if I get a 30-year mortgage and make extra payments?
A: A valid strategy. Adding $400/month to a $400,000 30-year mortgage cuts the term by roughly 10 years and saves over $200,000 in interest, while preserving minimum-payment flexibility during financial hardship.
Q: How does my credit score affect my mortgage term choice?
A: Your credit score determines your rate, which affects both options. A 760+ score maximises the rate gap advantage of the 15-year term. Check your score with the Kreditwürdigkeitsrechner at ToolsTecique to understand your rate tier before applying.
Run Both Options With Your Numbers
Model both terms with the free Hypothekenrechner at ToolsTecique. Then use the Tilgungsrechner für Kredite to see a full payment schedule for each option side by side.
