50-Year Mortgage on $350,000 Home
Last updated June 2026
On a $350,000 home with 20% down ($70,000), a 50-year mortgage at 6.875% gives you a monthly payment of $1,658 compared to $1,839 on a 30-year term — saving $181/month but costing $332,609 more in total interest.
Property Details
Term Comparison
| Term | Monthly Payment | Total Interest | Total Cost | vs 30yr |
|---|---|---|---|---|
| 15 yr | $2,497 | $169,495 | $449,495 | $-213K interest |
| 20 yr | $2,150 | $235,971 | $515,971 | $-146K interest |
| 25 yr | $1,957 | $307,013 | $587,013 | $-75K interest |
| 30 yr (baseline) | $1,839 | $382,184 | $662,184 | baseline |
| 40 yr | $1,715 | $543,029 | $823,029 | +$161K interest |
| 50 yr | $1,658 | $714,793 | $994,793 | +$333K interest |
50-Year Monthly Payment
$1,658
vs 30yr: saves $181/month
The Cost of Time
Interest Share of Total Cost
What This Means
For a $350,000 home with 20% down, you borrow $280,000. At 6.875%, a 50-year mortgage drops your monthly principal and interest payment to $1,658, compared to $1,839 on a 30-year and $2,497 on a 15-year. The monthly savings of $181 versus a 30-year term may sound appealing, but the true cost is significant: you pay $714,793 in total interest over 50 years versus $382,184 over 30 years — an extra $332,609. Your equity also builds far more slowly, with most of your early payments going toward interest. A 50-year mortgage can make sense as a temporary affordability tool if you plan to refinance or sell within a few years, but as a long-term strategy it costs substantially more than a conventional 30-year loan.