Mortgage Payment Calculator
Enter your loan details below. We'll break the monthly payment into principal, interest, taxes, insurance and PMI (Private Mortgage Insurance), and lay out the full amortization ledger.
Amortization Ledger
Each row is one year of payments — dark for principal paid down, brass for interest.
How this mortgage calculator works
This calculator estimates your total monthly housing payment, not just principal and interest. It adds property tax, homeowners insurance, PMI (Private Mortgage Insurance, if your down payment is under 20%) and HOA (Homeowners Association) dues, then breaks down how each payment is split between paying down the loan and paying interest over time using the amortization ledger above.
Understanding each part of your monthly payment
Lenders often bundle several separate costs into one monthly bill, which can make it hard to see what you're actually paying for. Here's what each piece covers:
Principal
This is the portion of your payment that goes toward paying down the actual amount you borrowed. Every dollar of principal you pay builds equity — the part of the home's value you actually own outright.
Interest
This is the cost of borrowing the money, charged as a percentage of your remaining loan balance. Early in a mortgage, interest makes up the majority of each payment; as the balance shrinks over the years, more of each payment shifts toward principal — which is exactly what the amortization ledger above visualizes.
Property tax
Set by your local county or municipality based on your home's assessed value, property tax is usually collected monthly by your lender and held in escrow, then paid to the tax authority on your behalf once or twice a year. Rates vary significantly by location.
Homeowners insurance
Nearly all lenders require proof of homeowners insurance before closing, since it protects their collateral (your home) as well as your own belongings. Like property tax, it's often collected monthly and paid out of an escrow account annually.
PMI (Private Mortgage Insurance)
Charged when your down payment is under 20%, PMI protects the lender — not you — in case of default. It typically falls off automatically once your loan balance drops to 78% of the home's original value, or you can request removal at 80%.
HOA (Homeowners Association) dues
If your home is part of a managed community, condo building or planned development, HOA dues cover shared maintenance and amenities. These aren't universal — many single-family homes have none at all.
A few ways to lower your monthly payment
- Increase your down payment. Beyond reducing your loan amount, crossing the 20% threshold eliminates PMI entirely — try it in the calculator above and watch the PMI line disappear.
- Shop your interest rate. Even a small rate difference compounds significantly over a 30-year term; getting quotes from a few lenders is usually worth the effort.
- Consider a longer term. Stretching from 15 to 30 years lowers the monthly payment, though it increases total interest paid over the life of the loan — the ledger above makes that trade-off visible.
- Ask about escrow waivers. Some lenders allow you to pay property tax and insurance directly rather than through escrow, which can occasionally reduce monthly cash-flow requirements (though the total annual cost is the same).
Glossary of common mortgage terms
Amortization — the process of paying off a loan through scheduled payments that cover both principal and interest over time.
APR (Annual Percentage Rate) — the interest rate plus certain lender fees, expressed as a yearly rate; it's usually slightly higher than the base interest rate and is meant to help compare loan offers.
Equity — the difference between your home's current value and what you still owe on the mortgage; it grows as you pay down principal and/or as the home's value rises.
Escrow — an account held by your lender to collect and pay property tax and insurance on your behalf, funded through a portion of your monthly payment.
Fixed-rate vs. adjustable-rate (ARM) — a fixed-rate mortgage keeps the same interest rate for the full term; an adjustable-rate mortgage starts with a lower rate that can change periodically after an initial period.
Loan-to-value (LTV) ratio — your loan amount divided by the home's value, expressed as a percentage; a 20% down payment corresponds to an 80% LTV.
Frequently asked questions
How is a monthly mortgage payment calculated?
It's calculated from the loan amount, interest rate and loan term using a standard amortization formula. Property tax, homeowners insurance, PMI (Private Mortgage Insurance) and HOA (Homeowners Association) dues are then added on top to get your full monthly cost.
What is PMI (Private Mortgage Insurance) and when do I have to pay it?
Private Mortgage Insurance (PMI) is typically required when your down payment is less than 20% of the home price. It protects the lender if you default, and can usually be removed once you've built enough equity.
What is HOA (Homeowners Association) and what do HOA dues cover?
A Homeowners Association (HOA) is an organization in some neighborhoods, condos or planned communities that manages shared spaces and enforces community rules. HOA dues are a recurring fee — usually monthly or annual — that typically covers things like landscaping, exterior maintenance, shared amenities (pools, gyms) and building insurance for common areas. Not every home has HOA dues; if yours doesn't, just leave that field at $0.
How much should I put down on a house?
A 20% down payment avoids PMI (Private Mortgage Insurance) and lowers your loan amount, but many buyers put down less. The right amount depends on your savings, loan program, and how it changes your monthly payment — try adjusting the down payment above to see the effect.
What is an amortization schedule?
It shows how each payment is split between principal and interest across the life of the loan. Early payments are mostly interest; later payments shift toward paying down the loan balance faster.
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