Calcify

Mortgage Calculator

Calculate your monthly mortgage payment, total interest, and view a full amortization schedule.

📖 How to Use

Enter the home price, down payment, interest rate, and loan term. The calculator shows your monthly principal & interest payment, plus estimated property tax, insurance, and PMI. PMI is automatically added when your down payment is below 20%.

Understanding Your Mortgage

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Principal & Interest

The core monthly payment that goes toward paying off your loan balance and the interest charged by the lender.

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Down Payment

The upfront amount you pay. 20% or more avoids PMI (Private Mortgage Insurance), saving you money monthly.

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Amortization

Early payments are mostly interest. Over time, more goes to principal. A 15-year loan saves significantly on total interest.

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PMI

Private Mortgage Insurance is required when your down payment is less than 20%. It typically costs 0.5–1% of the loan annually.

Frequently Asked Questions

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How much house can I afford?

A common rule is that your monthly mortgage payment should be no more than 28% of your gross monthly income. Use this calculator to find a price point that fits your budget.

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15-year vs 30-year mortgage?

A 15-year mortgage has higher monthly payments but saves tens of thousands in interest. A 30-year gives lower payments and more flexibility. Try both terms to compare.

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What's included in my monthly payment?

Your total monthly payment (PITI) includes Principal, Interest, Taxes, and Insurance. Some lenders collect these in an escrow account.