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PMI Calculator

Estimate monthly PMI, annual PMI, and loan-to-value ratio from home price and down payment assumptions.

Updated April 11, 2026
Free online tool
Planning and research use

Why this page exists

PMI can be one of the easiest parts of a home payment to miss because it usually shows up only when the down payment is smaller. This calculator helps buyers estimate monthly PMI from home price, down payment, and an annual PMI rate assumption so the housing payment feels more complete.

Interactive tool

Run the estimate

Enter your numbers and read the result first, then use the sections below to understand what affects the outcome.

Calculator

PMI calculator

Estimate private mortgage insurance cost from home price, down payment, and an annual PMI rate assumption.

Result

$191

Estimated monthly PMI based on the home price, down payment, and annual PMI rate entered.

Estimated monthly PMI$191

Estimated annual PMI$2,295

Estimated loan amount$382,500

Loan-to-value ratio90.0%

With a $42,500 down payment on a $425,000 home, the estimated loan amount is about $382,500.
Applying a 0.60% annual PMI rate produces an estimate of about $191 per month.
At about 90.0% LTV, PMI is more commonly part of the monthly housing cost until the balance or value picture changes.

This is a planning estimate. PMI pricing, cancellation rules, and lender requirements can vary by loan type, credit profile, and servicer policies.

Planning note

Last updated April 11, 2026. Use this tool to compare scenarios and plan ahead, then confirm important details with the lender, employer, insurer, contractor, or other qualified provider involved in the final decision.

How it works

What the calculator is doing

Enter the home price and choose whether the down payment is entered as a dollar amount or a percentage.

Add the estimated annual PMI rate to estimate the yearly and monthly PMI amount.

The calculator also shows the loan-to-value ratio because that often helps explain whether PMI is more likely to apply.

Understanding your result

PMI is usually easiest to understand as part of the monthly housing picture, but the loan-to-value ratio helps explain why the cost shows up in the first place. That makes it easier to compare a smaller down payment with a larger one before an offer is made.

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Examples

Ways people use this tool

Example scenarios help turn a quick estimate into a more useful comparison or planning step.

Compare a 10% and 20% down payment

Changing the down payment can show how much PMI might add when the starting equity is smaller.

Check the housing payment more realistically

Use this estimate alongside the mortgage payment to avoid looking only at principal and interest.

Stress-test a different PMI rate assumption

Lender pricing varies, so changing the annual PMI rate can help show a more conservative or optimistic monthly range.

FAQ

Common questions

How is PMI estimated here?

This calculator multiplies the estimated loan amount by the annual PMI rate entered and converts that yearly estimate into a monthly amount.

Why show loan-to-value ratio too?

Because PMI often depends on how much of the home's value is financed, so LTV gives more context around whether PMI is more likely to apply.

Will this match a lender quote exactly?

Not necessarily. PMI rates and cancellation rules vary by lender, loan program, credit profile, and servicing rules.

Related tools

Keep comparing

Use these related tools to compare nearby scenarios, check a second estimate, or keep narrowing down the right decision.

Home ToolsUpdated April 11, 2026