Real Estate Tool

Loan Payment Calculator

Estimate monthly payment, max loan amount, max purchase price, balloon balance, interest-only periods, and rate-stress scenarios based on common real estate loan assumptions.

Start Here

Choose what you want to calculate

Enter price, down payment, rate, and loan structure to estimate monthly payment.

Tip: Advanced fields appear only when you select balloon, interest-only, or rate-stress options.

Enter the loan assumptions

Scenario nameOptional. Used only in the result summary.

Purchase / Loan

Purchase price

Down payment (%)Used to calculate loan amount or max price.

Max monthly paymentUsed for max loan and max price modes.

Loan Terms

Interest rate (%)

Amortization period (years)Used to calculate principal and interest.

Loan structureChoose balloon or interest-only only if those terms apply.

Interest-only period (months)After this period, payment converts to amortizing if loan remains outstanding.

Balloon due in (years)Shows estimated remaining balance at balloon date.

Monthly Add-Ons

Annual property taxes

Annual insurance

Monthly mortgage insurance / MIP

Monthly HOA / dues

Optional Stress Test

Show rate stress test

Use this to estimate how the payment changes if the rate rises.

Stress rate increase (%)Example: 1.00 means current rate plus one percentage point.

Estimated result

⚠ Planning estimate only — actual loan terms, payments, underwriting, and approval conditions will vary by lender and borrower qualifications.

Select a calculation mode and enter your assumptions to get started.

Estimated Monthly Payment

—

This is a planning estimate. Actual loan terms depend on the borrower, property, lender, and underwriting standards.

Purchase price—

Down payment—

Loan amount—

Loan-to-value—

Principal & interest—

Taxes & insurance—

Mortgage ins. / HOA—

Total monthly payment—

Interest-only payment—

Payment after IO period—

Estimated balloon balance—

Stressed monthly payment—

Payment increase—

Amortization Schedule

The on-page schedule shows up to 480 months. Download the CSV to review or edit the full schedule in a spreadsheet.

Schedule reflects the base rate. Rate stress results are shown in the metrics above.

What does a loan payment include?

A basic real estate loan payment usually starts with principal and interest. Many buyers also need to estimate property taxes, insurance, mortgage insurance, HOA dues, or other monthly property costs.

Monthly Payment = Principal & Interest + Taxes + Insurance + Mortgage Insurance + HOA

The principal and interest portion is based on loan amount, interest rate, and amortization term. Balloon loans and interest-only periods can change payment behavior and may leave a balance due at maturity.

Important note

This calculator gives a planning estimate. It does not include lender fees, escrow adjustments, closing costs, rate buydowns, points, repairs, utilities, refinance costs, or changes in taxes and insurance after closing.

How to use this loan payment calculator

Find Payment — Enter purchase price, down payment, rate, amortization period, and loan structure. The calculator estimates total monthly payment.

Find Max Loan Amount — Enter your maximum monthly payment, rate, amortization period, and add-ons. The calculator estimates the loan amount supported by that payment.

Find Max Purchase Price — Enter maximum monthly payment and down payment percentage. The calculator estimates the purchase price supported by the loan amount.

Balloon and Interest-Only Options — Use these only when the loan is not fully amortizing. The calculator can show interest-only payment, payment after the IO period, and estimated balloon balance.

Rate Stress Test — Turn this on to estimate the payment impact of a higher interest rate.

Disclaimer: This calculator is for educational and planning purposes only. It is not an offer to lend, a loan commitment, a pre-qualification, or a pre-approval. Results are estimates only and do not reflect actual loan terms, lender requirements, underwriting criteria, or approval conditions. Actual payments, rates, qualifying requirements, and loan amounts will vary based on borrower qualifications, lender policies, property type, occupancy, loan structure, and other factors. Always consult a licensed lender or other appropriate professional before making any financial or real estate decisions.