Principal, interest, property tax, insurance, PMI and HOA โ all in one number. Then see your full amortization schedule, your payoff date, and exactly how much an extra payment would save you.
On a $400,000 home with 20% down ($320,000 loan) at 7.25% for 30 years, principal and interest come to about $2,183 a month. Add typical property tax and insurance and the real payment is closer to $2,700. Over the full term you'd pay roughly $465,900 in interest โ more than the loan itself.
Rates have climbed sharply this fall. Freddie Mac's weekly survey showed the 30-year fixed average jumping from 6.65% in mid-August to 7.28% by October 1, 2026 โ a move that adds well over $100 a month to a typical new loan. When rates move that fast, guessing at your payment isn't good enough. Mortgage Payment Pro gives you the exact number, shows where every dollar goes, and lets you test the moves that cut your cost.
How to Use Mortgage Payment Pro
- Enter the home price โ the listing price, or the top of the range you're shopping.
- Set your down payment as a dollar amount or a percentage. Under 20% on a conventional loan usually triggers PMI.
- Pick a loan term โ 30, 20, 15 or 10 years. Use the slider to compare instantly.
- Enter your interest rate from a lender quote or Loan Estimate. Even a 0.25% difference shows up clearly.
- Add property tax, homeowners insurance, PMI and HOA dues for your true all-in payment (PITI).
- Try an extra payment โ monthly or one-time โ to see your new payoff date and interest saved.
- Review and export โ check the donut breakdown and balance chart, then download the amortization schedule as CSV or PDF.
What Makes Up Your Monthly Mortgage Payment
Lenders call the full payment PITI: principal, interest, taxes and insurance. Here's how it breaks down for our $400,000 example home:
Principal
The part that actually pays down your loan and builds equity. Small at first, it grows every month.
Interest
The lender's charge, calculated on your remaining balance. It dominates the early years of the loan.
Property Tax
Based on a 1.1% annual rate. Usually collected monthly into escrow. Varies widely by state and county.
Homeowners Insurance
Assumes $1,800 a year. Required by every lender; costs are rising fastest in storm-prone areas.
Total: about $2,700 a month. If you put down only 10%, the loan grows to $360,000, principal and interest rise to about $2,456, and PMI (around 0.5% a year) adds roughly $150 more โ pushing the total near $3,120.
The Mortgage Payment Formula
Mortgage Payment Pro uses the same standard amortization formula every lender uses for fixed-rate loans:
- M = monthly principal + interest payment
- P = loan amount (home price minus down payment)
- r = monthly interest rate (annual rate รท 12)
- n = total number of payments (years ร 12)
Worked example: P = $320,000, r = 0.0725 รท 12 = 0.006042, n = 360. Plug those in and M = $2,182.96. Taxes, insurance, PMI and HOA are then added on top โ the formula covers principal and interest only.
How Interest Rates Change Your Payment
Same $320,000 loan, 30-year fixed, different rates. The bars show total interest paid over the life of the loan:
| Rate | Monthly P&I | Total Interest | Lifetime Interest |
|---|---|---|---|
| 6.25% | $1,970 | $389,306 | |
| 6.50% | $2,023 | $408,142 | |
| 7.00% | $2,129 | $446,428 | |
| 7.25% | $2,183 | $465,867 | |
| 7.75% | $2,293 | $505,307 | |
| 8.00% | $2,348 | $525,297 |
Reading Your Amortization Schedule
An amortization schedule lists every payment and splits it into interest and principal. Because interest is charged on the remaining balance, early payments are mostly interest. On our 7.25% example:
| Milestone | Interest | Principal | Interest Share |
|---|---|---|---|
| Payment #1 | $1,933 | $250 | |
| Entire Year 1 | $23,098 | $3,097 | |
| Payment #246 (โ year 21) | Principal finally exceeds interest | ||
| Final payment (#360) | $13 | $2,170 | |
That's why the first decade feels slow: after a full year of payments totaling about $26,200, your balance drops by only $3,100. Mortgage Payment Pro's yearly and monthly views, plus its balance-over-time chart, make this crossover easy to see.
15-Year vs 30-Year Mortgage
Using early-October 2026 average rates on the same $320,000 loan:
30-Year at 7.25%
- Monthly P&I: $2,183
- Total interest: $465,867
- Lower payment, more monthly breathing room
- Best for first-time buyers and tight budgets
15-Year at 6.60%
- Monthly P&I: $2,805
- Total interest: $184,930
- About $622 more per month
- Saves roughly $280,900 in interest
A middle path: take the 30-year for flexibility, then pay extra whenever you can. You keep the low required payment but capture much of the savings.
How Much Do Extra Payments Really Save?
Here's what extra principal does to our $320,000 loan at 7.25%, starting from month one:
| Strategy | Interest Saved | Paid Off Early By | Savings |
|---|---|---|---|
| +$100 / month | $74,709 | 4 years | |
| Biweekly payments (13 per year) | $117,993 | 6 yrs 5 mos | |
| +$200 / month | $126,115 | 6 yrs 11 mos | |
| +$500 / month | $217,916 | 12 yrs 4 mos |
Even $100 a month โ about $3.30 a day โ saves nearly $75,000. Enter your own amount in the calculator's extra-payment field to see your exact payoff date.
7 Smart Ways to Lower Your Mortgage Payment
Shop at least three lenders
Rate quotes on the same day can differ by a quarter point or more. On a $320K loan, 0.25% is worth about $55 a month.
Reach 20% down to skip PMI
PMI typically runs 0.3% to 1.5% of the loan per year. If you can't hit 20%, plan to request PMI removal once you reach 20% equity.
Raise your credit score first
Higher scores unlock better pricing on both the rate and PMI. Paying down card balances before applying is the fastest lever.
Compare discount points honestly
Buying points lowers the rate but costs cash upfront. Divide the cost by the monthly savings to find your break-even month โ only worth it if you'll stay longer.
Shop homeowners insurance yearly
Premiums have been rising fast. Comparing carriers or raising your deductible can trim your escrow payment without touching the loan.
Appeal your property assessment
If your home is assessed above market value, a successful appeal lowers your tax bill โ and your monthly payment โ every year.
Watch for a refinance window
Rates move. If they fall meaningfully below your rate, run both loans in Mortgage Payment Pro and compare against closing costs.
Who Mortgage Payment Pro Is For
First-time buyers
Find a price range that fits your budget before you fall in love with a listing.
Refinancers
Compare your current loan against a new rate and term side by side.
Early-payoff planners
Test extra payments and see your new debt-free date instantly.
Agents & investors
Export clean amortization schedules as CSV or PDF for clients and deal analysis.
Free, private, and instant โ your data never leaves your browser.
Open Mortgage Payment Pro โFrequently Asked Questions
How is a monthly mortgage payment calculated?
Principal and interest come from the standard amortization formula using your loan amount, monthly interest rate and number of payments. Property tax, homeowners insurance, PMI and HOA dues are then added to get your full monthly payment (PITI).
What is the monthly payment on a $320,000 mortgage?
At 7.25% for 30 years, principal and interest are about $2,183 a month. At 6.5% it's about $2,023, and on a 15-year loan at 6.6% it's about $2,805. Taxes and insurance are extra.
Why does most of my early payment go to interest?
Interest is charged on your remaining balance, which is highest at the start. On a 30-year loan at 7.25%, about 89% of the first payment is interest, and principal doesn't overtake interest until around year 21.
Is a 15-year or 30-year mortgage better?
A 15-year loan has a higher payment but a lower rate and far less total interest โ about $281,000 less on a $320,000 loan at current averages. A 30-year loan keeps the payment lower and more flexible. Choose based on how much monthly cushion you need.
How much does PMI cost?
PMI on a conventional loan typically costs about 0.3% to 1.5% of the loan amount per year, depending on credit score and down payment. You can usually ask to remove it at 20% equity, and it ends automatically at 22% equity based on the original schedule.
Do extra payments really make a difference?
Yes. On a $320,000, 30-year loan at 7.25%, an extra $200 a month saves about $126,000 in interest and pays the loan off nearly seven years early. Make sure your servicer applies extra money to principal.
Are biweekly mortgage payments worth it?
Paying half your payment every two weeks results in 13 full payments a year instead of 12. On our example loan, that saves about $118,000 and cuts roughly six and a half years. Avoid third-party programs that charge fees for the same result.
Is Mortgage Payment Pro free and private?
Yes. It's completely free, needs no sign-up, and runs entirely in your browser. Your numbers are never stored or sent anywhere.
Disclaimer: Mortgage Payment Pro and the examples in this article are estimates for planning purposes only and are not a loan offer or financial advice. Rate figures reference Freddie Mac's Primary Mortgage Market Survey (week of October 1, 2026); rates change weekly. Your actual rate, taxes, insurance and payment depend on your lender, credit profile and location.
