The Full PITI Payment: What a Mortgage Really Costs Each Month
A mortgage calculator with taxes and insurance shows you the number that actually matters — roughly $2,943 a month, not the $2,276your lender advertises as "principal and interest." That $667 gap on a $400,000 home isn't a rounding error. It's property taxes, homeowners insurance, and mortgage insurance quietly landing in an escrow account you didn't know you were funding. Buyers who plan around the P&I figure end up house-poor by the second tax bill. This page builds the payment the right way — from the bottom up.
The Two Payments Every Buyer Gets Quoted
Every borrower sees two numbers. The first is P&I — principal and interest — the loan-repayment portion that a basic mortgage calculator produces from three inputs. The second is PITI: Principal, Interest, Taxes, and Insurance. PITI is what your servicer actually withdraws each month, and it's the figure lenders use to decide whether you qualify.
The taxes and insurance don't go to the lender to keep. They flow into an escrow account — a holding account your servicer uses to pay your property tax and insurance bills when they come due. The CFPB describes escrow as a way to spread two big annual bills across twelve manageable payments. You still pay every dollar — you just pay it monthly instead of getting hit with a $5,000 tax bill each fall.
How Each Piece of PITI Is Calculated
Four separate formulas stack into one payment. Only the first is complicated:
- Principal & Interest:M = P × [r(1+r)ⁿ] / [(1+r)ⁿ − 1], where P is the loan amount, r is the monthly rate (annual rate ÷ 12), and n is the number of payments (years × 12). On $360,000 at 6.5% for 30 years, that's $2,276.
- Property Tax:home value × local rate ÷ 12. A $400,000 home at a 1.1% effective rate is $4,400 a year, or $367 a month. It's based on the home's value, not your loan balance — so a bigger down payment doesn't shrink it.
- Homeowners Insurance: annual premium ÷ 12. An $1,800 policy adds $150 a month. This one is a flat dollar amount from your insurer, not a percentage.
- PMI:loan amount × PMI rate ÷ 12, and only when your down payment is under 20%. On a $360,000 loan at a 0.5% PMI rate, that's $150 a month until you build 20% equity.
Add HOA dues if your property has them, and you have the full picture. The principal and interest calculator isolates that first, trickiest piece if you want to see how the amortization math works on its own.
A Full PITI Walkthrough on a $400,000 Home
Let's build one payment from scratch. A buyer puts 10% down on a $400,000 home — that's $40,000 down and a $360,000 loan at 6.5% over 30 years. Here's each line, in order:
| Component | How It's Figured | Monthly |
|---|---|---|
| Principal & Interest | $360,000 loan, 6.5%, 30 yr | $2,276 |
| Property Tax | $400,000 × 1.1% ÷ 12 | $367 |
| Homeowners Insurance | $1,800/yr ÷ 12 | $150 |
| PMI (90% LTV) | $360,000 × 0.5% ÷ 12 | $150 |
| Total PITI | — | $2,943 |
Here's the part that stings. Of that $2,943, only about $326 actually reduces your loan balance in month one. The other $2,617 is interest, taxes, and insurance — money that buys you shelter and a shot at appreciation but doesn't build a dime of equity that month. A full amortization schedule shows how that $326 grows every month as the interest share shrinks.
Property Taxes Can Swing Your Payment by $600
The single biggest variable in your PITI often isn't the interest rate — it's where you buy. The same $400,000 home carries a property tax bill of $97 a month in Hawaii and $743 a month in New Jersey. That's a $646 monthly difference, nearly $7,800 a year, on identical houses. Here are effective rates across the spread, applied to a $400,000 home:
| State | Effective Rate | Annual Tax | Monthly |
|---|---|---|---|
| Hawaii | 0.29% | $1,160 | $97 |
| Alabama | 0.42% | $1,680 | $140 |
| Colorado | 0.55% | $2,200 | $183 |
| California | 0.71% | $2,840 | $237 |
| Florida | 0.86% | $3,440 | $287 |
| U.S. average | ~1.02% | $4,080 | $340 |
| Ohio | 1.52% | $6,080 | $507 |
| Texas | 1.68% | $6,720 | $560 |
| Illinois | 2.07% | $8,280 | $690 |
| New Jersey | 2.23% | $8,920 | $743 |
Rates are set county by county, so treat these state averages as a starting point and pull your exact figure from the local assessor. One more wrinkle: since the 2017 tax law, the federal SALT deduction caps state and local taxes — property tax included — at $10,000 a year, so high-tax-state buyers can't always write off the full bill. Run your own number in the property tax calculator before you lock a budget.
Homeowners Insurance Isn't a Flat Number
Most calculators bury insurance as a fixed $100 a month. In reality it's the second most location-sensitive line in your payment. According to the Insurance Information Institute, the national average premium sits near $1,800 to $2,500 a year — but the range is brutal. A hurricane-exposed home in Florida can run $5,000 to $6,000 annually, over $450 a month, while a low-risk home in Vermont or Delaware might cost $800, barely $70 a month. Wildfire, hail, and flood zones each carry their own surcharges, and flood coverage is a separate policy entirely.
Because insurance is a real quote and not a rule of thumb, get an actual number before you finalize a budget. The homeowners insurance calculator estimates a premium from your dwelling coverage, location, and deductible so your PITI figure reflects your actual roof, not a national average.
Does PMI Apply to You? The 20% Line
PMI — private mortgage insurance — is the price of putting down less than 20%. It protects the lender, not you, and it typically runs 0.3% to 1.5% of the loan per year depending on your credit score and down payment. On our $360,000 example at 0.5%, that's $150 a month buying you exactly zero equity.
The good news: it's temporary. Under the federal Homeowners Protection Act, your servicer must automatically drop PMI once your balance falls to 78% of the original value, and you can request removal at 80%. On a 90%-LTV loan making standard payments, that's several years out — but extra principal payments pull it forward. The PMI calculator pins down the exact month it cancels, and the mortgage calculator with PMI folds that timeline into your full payment. Chase the lowest payment today with a small down payment, or push past 20% down to kill PMI and cut your lifetime cost — the calculator lets you price both in seconds.
Why Your Fixed-Rate Payment Still Changes
"Fixed-rate" only fixes the principal and interest. The taxes and insurance riding on top move every year, which is why a payment quoted at $2,943 today might be $3,120 in three years without a single rate change. Two forces drive the creep: assessors reappraise your home's value — often upward in a rising market — and insurers raise premiums with inflation and local claims.
Once a year your servicer runs an escrow analysis, compares what it collected against what the bills actually were, and resets your monthly payment to cover the difference. A common surprise: if taxes jumped mid-year, you can face both a lump-sum shortage payment and a higher monthly going forward. Budgeting a 3% to 8% annual rise in the taxes-and-insurance portion keeps that letter from wrecking your month.
Four Costs PITI Still Leaves Out
PITI is the true monthly payment, but it isn't the true cost of ownership. Four expenses hide outside it, each with real dollar consequences:
- Closing costs:2% to 5% of the price, due at settlement. On a $400,000 home that's $8,000 to $20,000 out of pocket on day one. The closing costs calculator itemizes them.
- Maintenance:budget about 1% of the home's value a year — $4,000 on a $400,000 home — for the roof, HVAC, and water heater that will eventually fail.
- Utilities: $200 to $500 a month depending on size and climate, and never in a mortgage quote.
- HOA special assessments: beyond regular dues, condo and HOA owners can be billed thousands for a new roof or elevator with little notice.
This is why lenders qualify you on PITI but smart buyers budget well above it. To fold maintenance and utilities into one number, the house payment calculator shows the true monthly cost of ownership, and the home affordability calculator works backward from your income — its 28/36 rule leaves room for the costs PITI ignores.
Where This Calculator Helps Most
Reach for the full PITI number in these moments:
- Setting a realistic home-shopping budget before you tour a single listing — the P&I figure will mislead you by hundreds a month.
- Comparing two homes in different counties, where a tax-rate gap can outweigh a difference in sticker price.
- Deciding between 10% and 20% down, where a bigger down payment kills PMI and trims both the principal and the escrow built on it.
- Sanity-checking a lender's Loan Estimate — if their monthly number looks low, they may have plugged in a placeholder tax or insurance figure.
One last move before you make an offer: pull your exact tax rate from the county site and a real insurance quote from an agent, then plug both into the calculator above. A PITI figure built from your actual bills — not national averages — is the difference between a payment you can live with and one that owns you.
