US Mortgage Calculator — Papa Calculator

Property

Home Price

Down Payment

20.0% of purchase price

Loan Details

Loan Type

Annual Interest Rate

US monthly compounding

Expected Adjusted Rate

Rate after fixed period ends

Periodic Rate Cap

Max rate increase per adjustment

Payment Frequency

Start Date (First Payment)

Housing Costs (Optional)

State

Property Tax (Annual)

Home Insurance (Annual)

HOA Fees (Monthly)

PMI Rate (Annual % of Loan)

Typical range: 0.5%–1.5%. Only applies if down < 20%.

PMI — Private Mortgage Insurance —

Home Price —

Down Payment —

Down Payment % —

PMI Annual Rate —

Monthly PMI Cost —

PMI Drops Off At —

Tax & Closing

Federal Tax Bracket

Closing Cost Estimate 3.0%

Slide to adjust estimated closing costs

Results update automatically as you change fields.

Your Payment

Payment Amount —

First Payment —

Last Payment —

Principal & Interest —

Total Monthly PITI —

Property Tax / mo —

Insurance / mo —

PMI / mo —

Loan Summary

Loan Amount —

Loan Type —

Total Interest —

Total PMI Paid —

Total Cost —

PMI Drops Off —

Mortgage Interest Tax Deduction

Year 1 Interest Paid —

Tax Bracket —

Est. Annual Tax Savings —

Effective Monthly Cost —

⚠ Estimate only. Actual savings depend on itemizing deductions. Consult a tax advisor.

Estimated Closing Costs

Total Estimated Closing Costs —

Item	Estimated Amount

Estimates only. Actual closing costs vary by lender, state, and loan type.

Cost Breakdown

Balance Over Time

Payment Frequency Comparison

Frequency	Payment	Total Interest	Payoff (yrs)	Total Cost

Extra Payment Options

Uses same loan details from Payment tab.

Extra Monthly Payment

Annual Lump Sum Payment

Applied once per year at anniversary

Current Loan

Rate & type pulled from Payment tab.

Remaining Balance (override)

Leave 0 to use original loan amount

New Loan

New Loan Type

New Interest Rate

Closing / Penalty Costs