Quick guide
How to use this calculator
- Enter the figures from your mortgage offer, statement, contract, property budget, or scenario.
- Keep currencies, rate conventions, periods, and balances consistent; compare multiple plausible scenarios where future rates or costs are uncertain.
- Use the component outputs to verify the result and review the calculator-specific boundary before acting.
Calculation method
Calculation method
Upfront premium = principal × upfront rate; recurring premium = principal × annual rate ÷ 12 × entered months.
Mortgage schedules use stable level-payment arithmetic and advance only the explicitly entered scenario. Results are checked for finite, principal-reducing behavior and round only for display.
Worked example
Practical example
A 240,000 loan with a 1% upfront premium and 0.5% annual premium can be reviewed over 60 months.
Upfront premium = principal × upfront rate; recurring premium = principal × annual rate ÷ 12 × entered months.
Supported inputs
Precision and limits
Visible input limits
Amounts are capped at 1e12, rates at 1000% unless a narrower percentage applies, and schedules at 1,200 months unless a frequency comparison explicitly documents more payment periods.
International scope
No currency, country, tax system, mortgage program, lender threshold, insurance rule, market rate, escrow law, or contract term is assumed.
Decision boundary
These are arithmetic scenarios, not offers, approvals, regulated disclosures, forecasts, valuations, legal interpretations, hardship advice, or recommendations.
Calculator-specific assumptions
Insurance bases, rates, duration, financing, cancellation, and tax treatment vary. Enter terms from the applicable program or quote.