Mortgage Calculator
Mortgage Calculator calculates monthly P&I and all-in payment; total interest; total cost. Enter your assumptions above to get the primary answer first, followed by supporting metrics and detail where useful.
Inputs
Mortgage CalculatorResults
Adjust the inputs, then use the primary action. The result will appear here.
What this calculator answers
Mortgage Calculator calculates monthly P&I and all-in payment; total interest; total cost. Enter your assumptions above to get the primary answer first, followed by supporting metrics and detail where useful.
How this calculation works
This tool uses home price; down payment; loan; rate; term; tax; insurance; HOA; PMI optional. It returns monthly P&I and all-in payment; total interest; total cost. Headline results, charts, schedules, comparisons and exports are generated from the same normalized calculation state.
Worked example
Estimated monthly payment: 1,975.3 • Principal & interest: 1,516.96 • Total interest: 306,106.77
Assumptions
Unless the tool says otherwise, rates are annual percentages, currency inputs are denominations rather than automatic FX conversions, and projections are mathematical models rather than guarantees. Typed values remain authoritative even outside normal slider ranges.
Limitations
Rules, limits, fees and tax calculations require a current versioned source package. When a source is stale or unavailable, the tool uses a truthful unavailable/manual state instead of pretending old data is current.
Sources & review
Changing-rule tools cite the official source, jurisdiction/effective period and verification date. Evergreen formula pages document their calculation method and review date. Last reviewed: 2026-09-25.
Privacy and review status
Financial inputs stay on this device by default and are not placed into analytics, advertising or error payloads. Review the methodology or report a calculation issue if something looks wrong. Methodology · Report a calculation issue.
Common questions
What does the Mortgage Calculator calculate?
It calculates monthly P&I and all-in payment; total interest; total cost. The result is based on the inputs and assumptions shown on this page.
What inputs does the Mortgage Calculator use?
The main inputs are home price; down payment; loan; rate; term; tax; insurance; HOA; PMI optional. Change them to model a different scenario.