Mortgage example · Educational math
How do 15-year and 30-year payments compare on a $350,000 home at 6%?
Stated sample price and rate—not a loan offer.
Calculator · How we calculate · Questions
Direct answer
Direct answer (stated sample only): On a $350,000.00 home with $70,000.00 down (20.0%), loan amount $280,000.00, sample 6% rate, and 30-year term, Nestfigure’s model shows about $1,678.74 principal and interest per month and about $324,346.93 total interest. Optional sample add-ons: tax $200.00/mo, insurance $100.00/mo, HOA $0.00/mo. Not a lender quote or pre-approval.
Compare sample terms
Same price ($350,000.00), down payment ($70,000.00), and rate (6%).
| Term | P&I / mo | Total interest |
|---|---|---|
| 15 yr | $2,362.80 | $145,303.84 |
| 20 yr | $2,006.01 | $201,441.67 |
| 30 yr | $1,678.74 | $324,346.93 |
Educational fixed-rate estimate only. Not a lender quote, pre-approval, PMI calculation, or escrow analysis. Real mortgages may include fees, insurance, and different day-count rules.
Balance over time
Selected monthsCompare loan terms
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Amortization schedule
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Related
Common questions
How do principal-and-interest payments compare for 15-year vs 30-year terms on a $350,000 home with 20% down at a sample 6% rate?
Direct answer (stated sample only): On a $350,000.00 home with $70,000.00 down (20.0%), loan amount $280,000.00, sample 6% rate, and 30-year term, Nestfigure’s model shows about $1,678.74 principal and interest per month and about $324,346.93 total interest. Optional sample add-ons: tax $200.00/mo, insurance $100.00/mo, HOA $0.00/mo. Not a lender quote or pre-approval.
Is this rate available today?
No. Sample rates are illustrative inputs so the math is transparent.
How do I change the numbers?
Open the prefilled mortgage calculator and edit price, down payment, rate, term, or optional housing costs.
Educational only. Last reviewed: August 9, 2026.