Mortgage Payment Calculator

Take a $400,000 home bought with 20% down ($80,000) on a 30-year loan at 6.5%. The principal-and-interest portion is about $2,023 per month. But the payment that actually leaves your account is bigger: add roughly $367 in property tax (at 1.1% per year) and $150 in home insurance ($1,800/year), and your real monthly mortgage payment is about $2,539. Because the down payment is 20%, there is no PMI in this example. That difference - over $500 a month - is exactly why a mortgage payment calculator needs to show the full PITI, not just the loan payment.

How the monthly mortgage payment is calculated

The principal-and-interest portion uses the standard amortization formula:

where L is the loan amount (home price − down payment), r is the monthly interest rate (annual rate ÷ 12), and n is the total number of payments (years × 12). The calculator then adds 1/12 of annual property tax, 1/12 of annual home insurance, monthly PMI (loan × PMI rate ÷ 12, only when the down payment is under 20%), and any monthly HOA dues to produce the total payment.

What is PITI?

PITI = Principal + Interest + Taxes + Insurance. These are the four standard components of a monthly mortgage payment, and most lenders collect taxes and insurance in an escrow account so they are paid automatically on your behalf. Lenders look at your total PITI - plus PMI and HOA - against your gross income. As a rule of thumb (the 28/36 rule), many want housing costs under 28% of gross monthly income and total debt under 36%.

Why taxes, insurance and PMI matter so much

Property tax rates vary enormously by county - from under 0.4% to over 2% of home value per year - so the same loan can carry a very different payment depending on where you buy. You can estimate your local bill with the property tax calculator. Home insurance has been rising sharply in many regions, and if your down payment is below 20%, PMI typically adds 0.3%-1.5% of the loan per year until you reach 20% equity - the PMI calculator breaks that cost out on its own. Together these escrow items often represent 20%-30% of the total monthly payment, which is why a "principal and interest" quote can understate your true cost.

Ways to lower your monthly payment

• Put 20% down: removes PMI entirely and shrinks the loan.
• Shop the rate: even 0.5% lower meaningfully cuts the monthly payment - compare several lenders.
• Choose a longer term: a 30-year loan lowers the monthly payment versus a 15-year (at the cost of more total interest).
• Mind the location: property tax and insurance differ by area and directly change your payment.
• Pay extra principal: overpaying shortens the loan and cuts lifetime interest - the mortgage payoff calculator shows exactly how much.

How to use this calculator

You only need a few numbers to get a realistic monthly payment. Work through the fields in order:

1. Home price: enter the purchase price or your target budget for the property.
2. Down payment: type the cash amount or percentage. The calculator subtracts it to find your loan amount and uses it to decide whether PMI applies.
3. Interest rate: use a current quoted rate. If you have not been pre-approved, a recent average for your loan type and credit tier is a reasonable placeholder.
4. Loan term: the number of years you will repay over (commonly 30, 20, or 15). A longer term lowers the monthly payment but raises total interest.
5. Property tax & insurance: add your annual property tax (or a county estimate) and a yearly homeowners insurance figure. Both are spread across 12 months.
6. PMI & HOA: if your down payment is under 20%, include a PMI rate; add any monthly HOA dues if the property has them.

The result updates instantly. Read the full monthly payment (PITI) at the top, then review the breakdown to see how much of the total goes to each component.

Who this calculator is for

This tool turns a list price into the real number that leaves your account each month. It is built for:

• First-time buyers checking whether a price range fits their budget before they start touring homes - pair this with the home affordability calculator to work backward from income.
• Move-up buyers comparing a prospective payment against their current one.
• House hunters sanity-checking a listing's "estimated payment," which often shows only principal and interest.
• Anyone budgeting who wants the true cost of homeownership, including taxes, insurance, PMI, and HOA - not just the loan portion.

A second worked example: 10% down with PMI

Suppose you buy a $320,000 home with 10% down ($32,000), leaving a $288,000 loan on a 30-year term at 6.5%. The principal-and-interest payment is about $1,820 per month. Because the down payment is below 20%, PMI applies - at roughly 0.5% of the loan per year, that adds about $120 per month. Add around $293 for property tax (1.1% of value per year) and $125 for insurance ($1,500/year), and the full PITI lands near $2,358. Once the balance drops to 80% of the original value (about $256,000), you can request that the lender drop PMI, trimming the payment back toward $2,238. Two buyers with the "same" home can therefore have noticeably different first-year payments depending on the down payment.

Key mortgage terms explained

• Principal: the amount you actually borrow (home price minus down payment). Each payment reduces it.
• Interest: the cost of borrowing, charged on the outstanding balance. Early in the loan, most of your payment goes to interest.
• Escrow: an account your servicer often uses to collect and pay property tax and insurance, which is why those costs show up in your monthly bill.
• LTV (loan-to-value): your loan balance divided by the home value. PMI cancellation is tied to LTV reaching 80% (on request) and 78% (automatic).
• PMI: private mortgage insurance, charged when the down payment is under 20% on a conventional loan, until you build enough equity.
• HOA dues: recurring fees paid to a homeowners association for shared amenities and upkeep; not part of the loan but part of your monthly housing cost.

What changes the result the most

If you adjust the inputs and watch the payment move, a handful of factors clearly dominate:

• Loan amount: the single biggest driver - a lower price or larger down payment lowers everything.
• Interest rate: on a 30-year loan, each 1% of rate moves the principal-and-interest payment by roughly 10-12%.
• Term length: a shorter term raises the monthly payment but cuts total interest sharply.
• Property tax rate: ranges from under 0.4% to over 2% of value by county, so location matters a lot.
• PMI: applies only with under 20% down and disappears once you reach enough equity.

How the payment is used in real life

The full PITI number is what lenders compare against your income when they apply the 28/36 rule, and it is the figure you should put in your household budget - not the smaller principal-and-interest quote. Lenders translate that ratio into a hard limit through your debt-to-income ratio, so a high car or student-loan payment can shrink the mortgage you qualify for even when the home itself is affordable. The PITI figure also informs how much cash to keep in reserve, since lenders typically want to see a few months of payments in savings after closing. When you make an offer, having a realistic monthly number keeps you from stretching into a payment you cannot comfortably carry once taxes, insurance, and any PMI or HOA are layered on. Builders, agents, and online listings frequently advertise the loan-only payment, so running your own PITI is the safest way to compare homes apples-to-apples.

Limitations and assumptions

This calculator is a planning estimate, not a loan offer. Keep these assumptions in mind:

• It assumes a fixed interest rate for the entire term and does not model adjustable-rate (ARM) changes.
• It does not include closing costs, lender fees, discount points, or prepaid items, which are paid at or before closing rather than monthly.
• Property tax and insurance are treated as level, but both typically rise over time as assessments and premiums increase.
• It does not account for the mortgage interest tax deduction or any state and local incentives, which can lower your effective cost.
• Your actual rate depends on credit score, loan type, debt-to-income ratio, and the lender - compare several offers to see real numbers.

Scenario comparison: how each input moves the payment

It helps to see several realistic scenarios side by side. The table below starts from a $400,000 home on a 30-year term at 6.5% and changes one variable at a time. Property tax is held at 1.1% per year and insurance at $1,800 per year unless noted, so you can isolate the effect of each lever on the full monthly PITI.

The pattern is clear: moving from a 30-year to a 15-year term adds roughly $650 a month even at a lower rate, a one-point jump in the interest rate adds about $214, dropping from 20% to 10% down adds both a bigger loan payment and PMI (about $400 combined), and a high-tax county can add $300 a month on its own. None of these show up in a bare principal-and-interest quote, which is why the full PITI is the only fair way to compare two homes.

How an escrow account shapes the payment

Most borrowers - and nearly all who put down less than 20% - pay their property tax and home insurance through an escrow account managed by the loan servicer rather than paying those bills directly. Each month the servicer collects about 1/12 of the annual tax and insurance along with your principal and interest, holds it, and pays the county and the insurer when the bills come due. The upside is that you never face a surprise four-figure tax bill; the downside is that your monthly payment is meaningfully higher than the loan portion, and it can change.

Servicers run an annual escrow analysis to check whether the amount they collected matched the bills they paid. If your county raised the assessed value of the home or your insurer increased the premium, the prior year's escrow ran short, so the servicer raises your monthly payment to refill it - and often adds a catch-up amount to cover the shortfall already incurred. This is the most common reason a "fixed-rate" payment goes up. It is also why the full PITI shown here is a snapshot of year one rather than a number guaranteed for 30 years. Building a small buffer into your budget absorbs these adjustments without stress.

How the payment evolves over the life of the loan

On a fixed-rate loan the principal-and-interest figure never changes, but what each dollar buys does. In the first year of a $320,000 loan at 6.5%, roughly $1,733 of the $2,023 P&I payment goes to interest and only about $290 to principal. By year 15 the split is close to even, and in the final years almost the whole payment retires principal. This is why making extra payments early - when the balance and the interest charge are highest - saves the most. Meanwhile the escrow portion drifts upward with taxes and insurance, and PMI (if any) drops off once you cross 20% equity, so the total payment can fall in one year and rise in another even though the loan rate is fixed. If you want to watch the principal-versus-interest split month by month, the amortization calculator lays out the full schedule.

How it compares to related calculators

This page answers one specific question - "what is the full monthly payment on this home?" - but home buying involves several others, and a sister tool fits each one:

• For a payment plus a full year-by-year amortization schedule, use the broader mortgage calculator.
• To find the maximum price you can afford from your income, use the home affordability calculator.
• To plan a savings target for your down payment, use the down payment calculator.
• To see how extra payments shorten the loan, use the mortgage payoff calculator.
• To compare your current loan against a new one, use the refinance calculator.
• To budget the upfront cash needed at signing, use the closing cost calculator.
• To weigh owning against your current lease, use the rent vs. buy calculator.