How this Down Payment Calculator works
This calculator uses the values you enter to produce a transparent US-focused planning estimate. Adjust the assumptions to compare scenarios instead of treating default values as current market quotes.
Formula and assumptions
Fixed-rate loan calculations use standard amortization mathematics. Taxes, insurance, fees, HOA dues, maintenance, PMI and other costs are included only when the calculator provides an input for them.
Use current lender and property information
Interest rates, insurance, property taxes, lender charges and property costs vary by borrower, property and location. Confirm important decisions with your lender, servicer, insurer and relevant public records.
Sources and methodology
Mortgage amortization methodology is consistent with standard fixed-rate amortization described by Freddie Mac. PMI educational notes follow Consumer Financial Protection Bureau guidance. FHA mortgage-insurance rules are separate and should be checked with HUD or your servicer.
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How to use this calculator
- Set Home price (default 400000).
- Set Down payment (default 20).
- Select Calculate to update the result. Reset restores the starting values.
Planning estimate only. Mortgage terms, taxes, insurance, lender fees, eligibility, property costs and local rules can change actual results.
Maintained by the CalculatorsOnline Editorial Team. Read our methodology policy.