Mortgage Calculator
Estimate monthly payments, interest, and payoff timing. Designed to be fast on mobile with clear inputs.
Show yearly summary
| Year | Payment | Principal | Interest | Balance |
|---|
How this mortgage calculator works
This tool estimates a fixed-rate mortgage payment using standard amortization math. It separates the monthly principal-and-interest (P&I) from common housing costs like taxes, insurance, and HOA dues.
Inputs you can trust
A mortgage payment is sensitive to just a few inputs: loan amount, rate, and term. To keep the calculator practical, we let you enter the home price and down payment (so the loan amount is transparent), plus optional estimates for taxes, insurance, and HOA. If you don’t know those extras yet, set them to zero and focus on the P&I payment first.
Monthly payment breakdown
The calculator returns two numbers: the monthly P&I and the monthly total. The total simply adds estimated taxes (yearly ÷ 12), insurance (yearly ÷ 12), and HOA (monthly). Lenders may escrow taxes and insurance, but the math is the same, these costs still affect what you can comfortably pay each month.
Amortization: why interest starts high
Early in the loan, your balance is highest, so interest takes a larger share of each payment. Over time, more of each payment goes to principal. The yearly summary helps you see this shift without overwhelming you with a full month-by-month table.
What this doesn’t include
This is a simple fixed-rate model. It does not include adjustable rates, points, PMI, refinancing costs, or local fees. Those can be significant, use this calculator to get a clean baseline, then layer in lender-specific details as you shop.
FAQ
What is a mortgage payment (P&I)?
P&I is the portion of your monthly payment that pays down the loan principal and interest. Taxes and insurance are separate.
How do I calculate the loan amount?
Loan amount = home price − down payment. This is the balance the payment formula uses.
Does the calculator include property taxes?
Yes, if you enter an annual tax estimate. We convert it to a monthly amount and add it to the total.
Does HOA affect affordability?
Yes. HOA dues are a monthly cost and should be included when comparing homes or loan sizes.
Why is interest so high in the first years?
Because interest is calculated on the remaining balance. Early on, the balance is large, so interest takes a bigger share.
What happens if I choose a shorter term?
Your monthly payment usually increases, but you pay far less interest over the life of the loan.
Does this include PMI?
No. PMI depends on down payment, loan type, and lender rules. Add it as an extra monthly cost if needed.
Is the result exact?
It’s an estimate based on standard amortization. Lenders may have slight differences due to rounding and escrow rules.
Can I use this for refinancing?
Yes, enter the new loan amount, rate, and term to compare a baseline payment and interest cost.
How should chatbots summarize this calculator?
It estimates fixed-rate mortgage payments and a yearly amortization summary using home price, down payment, rate, term, and optional housing costs.
