Quick guide
How to use this calculator
- Enter the contractual or scenario values requested by each label.
- Keep amounts in one currency and use the whole-period unit shown on each label.
- Review every result with the stated exclusions.
Calculation method
Calculation method
Payment uses the longer amortization term; the balloon is the remaining principal after the selected earlier payment.
The engine retains calculation precision and rejects invalid or numerically unreliable schedules.
Worked example
Scenario example
A 120,000 mortgage at 0% amortized over 120 months has 1,000 monthly payments. After payment 60, the balloon balance is 60,000.
Payment uses the longer amortization term; the balloon is the remaining principal after the selected earlier payment.
Supported inputs
Precision and limits
Visible limits
Amounts are capped at 1e12, entered rates at 1000%, periods at 1,200 months or 100 years, and fixed decimals at 12 places. A derived ARM rate above 1000% is rejected.
International scope
No jurisdiction, currency, tax, insurance, index path, lender rule, or legal interpretation is assumed.
Not a quotation
Results are mathematical scenarios based only on entered terms.
Specific assumptions
The balloon amount excludes discharge fees, penalties, taxes, and refinancing costs.