$400,000 Loan Calculator
A $400,000 mortgage is a typical size for median-priced homes in many US metros — 30-year terms are most common.
A $400,000 mortgage is a common size for median-priced homes in many US metros, especially in the Midwest and South. With 20% down, this finances a $500,000 home. At the current 6.5% 30-year fixed rate, monthly P&I is about $2,528. Adding property tax and insurance brings typical PITI to $3,100-$3,600. Most borrowers at this size choose 30-year terms for affordability.
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Enter loan parameters on the left, then click "Calculate Loan" to see results
How Loan Payments are Calculated
Loan Amount
We calculate the principal by subtracting your down payment from the total loan amount.
Monthly Payment
Using the principal, interest rate, and term, we calculate your fixed monthly payment.
Amortization
Each payment is split between principal and interest, with early payments going more toward interest.
What factors affect your loan payment?
- Loan Amount: The total amount you're borrowing after down payment
- Interest Rate: Higher rates mean higher monthly payments and more total interest
- Loan Term: Longer terms have lower monthly payments but more total interest
- Down Payment: Larger down payments reduce your loan amount and monthly payment
$400,000 Loan: Monthly Payment by Rate & Term
| Rate | 15 yr | 20 yr | 30 yr |
|---|---|---|---|
| 5.00% | $3,163/mo | $2,640/mo | $2,147/mo |
| 6.00% | $3,375/mo | $2,866/mo | $2,398/mo |
| 6.50% | $3,484/mo | $2,982/mo | $2,528/mo |
| 7.00% | $3,595/mo | $3,101/mo | $2,661/mo |
| 7.50% | $3,708/mo | $3,222/mo | $2,797/mo |
| 8.00% | $3,823/mo | $3,346/mo | $2,935/mo |
Principal & interest only. Does not include property taxes, insurance, PMI, or HOA fees. Your actual rate depends on credit score, term, and lender. Use the calculator above to model your specific scenario.
$400,000 Loan Sources & References
- Federal Reserve consumer credit data (G.19): national averages for home loan rates and balances.
- Consumer Financial Protection Bureau (CFPB): loan amortization formula, APR disclosure rules, and lender rate-quote benchmarks.
- Freddie Mac Primary Mortgage Market Survey: conforming loan rate trends for the most recent quarter.
- Federal Housing Finance Agency (FHFA): 2026 conforming loan limit of $832,750 baseline.
- Bureau of Labor Statistics (BLS): Consumer Expenditure Survey — average home loan balances by income decile.
Verified accuracy
Cross-checked against authoritative formulas (IRS, NIST, ACM) and updated for 2025/2026 tax years and rates.
Instant results
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Learn as you calculate
Each calculator includes the formula, plain-English explanation, and FAQs so you understand the result.
Estimates only. Calculator results are for educational and planning purposes — not professional advice. For binding decisions on taxes, investments, health, or legal matters, consult a qualified professional.