MyCalculatorNow resource guide
Mortgage Payment Sensitivity Study
Explore reproducible data showing how mortgage rate and term change a fixed-rate monthly payment.
Methodology
A $300,000 principal is held constant while fixed-rate monthly principal-and-interest payments are compared across five rates and three terms.
Scenario table
Review the reproducible 4%, 5%, 6%, 7%, and 8% scenarios for 15-, 30-, and 40-year terms.
Limitations
Results exclude taxes, insurance, fees, lender underwriting, and future rate changes; they are not a forecast.
Use results responsibly
Calculations are educational estimates. Keep your units and inputs visible, check important results against authoritative sources, and seek qualified professional advice for decisions involving health, money, law, construction, or safety.
| Rate | 15 years | 30 years | 40 years |
|---|---|---|---|
| 4% | $2,219.06 | $1,432.25 | $1,253.82 |
| 5% | $2,372.38 | $1,610.46 | $1,446.59 |
| 6% | $2,531.57 | $1,798.65 | $1,650.64 |
| 7% | $2,696.48 | $1,995.91 | $1,864.29 |
| 8% | $2,866.96 | $2,201.29 | $2,085.94 |