How do I calculate my monthly mortgage payment?

Enter your loan amount, interest rate, and loan term (in years) into OneKit's free Mortgage Calculator. It instantly calculates your monthly payment, total interest paid, and generates a full amortization schedule showing every payment over the life of the loan.

What is an amortization schedule?

An amortization schedule is a table showing each monthly payment split into principal and interest portions, along with the remaining loan balance after each payment. OneKit's mortgage calculator generates this automatically.

Can I compare two mortgage options?

Yes. OneKit's Mortgage Calculator has a built-in loan comparison feature that lets you enter two different loan scenarios side by side so you can see which option saves you more money.

🏠 Mortgage Calculator

Calculate your monthly payment, total interest, and get a full amortization schedule. Compare two loans side by side.

⚠️ For estimation purposes only. Actual rates and payments may vary. Consult a qualified financial advisor before making mortgage decisions.

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Loan Amount

$

Annual Interest Rate

%

Loan Term

Start Date

⚙️ Optional: Property Tax & Insurance

Annual Property Tax ($)

Annual Home Insurance ($)

Amortization Schedule

⚖️ Compare Two Loans

Enter a second loan to compare side by side and see which saves you more money.

Loan A - from inputs above

Fill in the form above to see Loan A.

Loan B - enter below

Amount ($)

Rate (%)

Term

💡 Tips

A 15-year mortgage saves tens of thousands in interest vs 30-year, but monthly payments are higher.
Even a 0.5% rate reduction on a $300k loan saves over $30,000 over 30 years.
Making one extra payment per year towards principal can cut years off your loan.
Property tax and insurance are typically bundled into your escrow / monthly payment.
Use the Compare tool above to quickly see whether a shorter term is worth the higher payment.