Free Mortgage Calculator With PITI Breakdown
Estimate your monthly mortgage payment in seconds. Enter your home price, down payment, and interest rate — our free Mortgage Calculator breaks down principal, interest, taxes, and insurance instantly.
| Year | Principal | Interest | Total Paid | Balance |
|---|
Frequently Asked Questions
Buying a home? Know your numbers first. Our free Mortgage Calculator shows your exact monthly payment, total interest paid, and full amortization schedule — before you talk to a lender.
A mortgage calculator instantly estimates your monthly payment by combining principal, interest, property taxes, and homeowner's insurance — giving you a full "PITI" picture before you ever talk to a lender.
Use it to:
- Set a realistic budget before you start house hunting
- Compare loan scenarios side-by-side (e.g., 15-year vs. 30-year)
- Test the impact of a larger down payment or a lower interest rate
- Estimate total interest paid over the life of the loan
💡 Pro Tip: Always run the calculator with taxes and insurance included — buyers who only look at principal and interest routinely underestimate their true monthly obligation by 15–25%.
Your monthly mortgage payment is calculated using the standard amortization formula, which spreads your loan balance evenly across every payment period.
The Formula:
M = P × [ r(1 + r)ⁿ / ((1 + r)ⁿ − 1) ]
| Variable | What It Means | Example |
|---|---|---|
| M | Monthly payment | What you're solving for |
| P | Principal (loan amount) | $340,000 |
| r | Monthly interest rate (APR ÷ 12) | 6.5% ÷ 12 = 0.5417% |
| n | Total number of payments (years × 12) | 30 yrs = 360 payments |
⚠️ Pitfall: This formula only covers principal and interest. Your actual monthly obligation will be higher once property taxes, homeowner's insurance, and any PMI are added.
A full mortgage payment has four components, commonly called PITI — Principal, Interest, Taxes, and Insurance.
| Component | What It Is | Typical Monthly Cost* |
|---|---|---|
| Principal (P) | Repayment of the original loan balance | Varies by loan size |
| Interest (I) | The lender's fee for extending credit | Varies by rate & balance |
| Taxes (T) | Property taxes collected via escrow | ~$200–$600+ |
| Insurance (I) | Homeowner's insurance (+ PMI if applicable) | ~$80–$200+ |
Figures are national estimates and vary significantly by location and loan size.
💡 Expert Insight: Most lenders collect taxes and insurance monthly through an escrow account, then pay those bills on your behalf. If your lender doesn't require escrow, you must budget for those lump-sum payments yourself — a cash-flow trap many first-time buyers miss.
Even a 1% difference in your mortgage rate has a dramatic impact on total cost. Here's what a $350,000 loan on a 30-year term looks like across different rates:
| Interest Rate | Monthly Payment (P&I) | Total Interest Paid | Total Cost |
|---|---|---|---|
| 5.5% | $1,987 | $365,320 | $715,320 |
| 6.5% | $2,212 | $446,320 | $796,320 |
| 7.5% | $2,447 | $531,043 | $881,043 |
| 8.5% | $2,691 | $619,770 | $969,770 |
⚠️ Rate-Lock Warning: If you're pre-approved but haven't closed yet, ask your lender about rate lock options (typically 30–90 days). In a volatile rate environment, even a two-week delay can cost you thousands.
Private Mortgage Insurance (PMI) is a monthly premium your lender requires when your down payment is less than 20% of the home's purchase price — it protects the lender, not you.
Typical PMI cost: 0.46%–1.50% of your loan amount annually.
On a $350,000 loan, that's roughly $134–$438 per month added to your payment.
Ways to eliminate or avoid PMI:
- Put 20% down — the most straightforward path
- Piggyback loan (80-10-10) — combine a primary mortgage, a second loan, and 10% down
- Lender-paid PMI (LPMI) — your lender absorbs PMI in exchange for a slightly higher rate
- VA loan — eligible veterans and service members pay no PMI, ever
- Request cancellation — by law (Homeowners Protection Act), PMI must be cancelled once your equity reaches 22% of the original value
💡 Pro Tip: PMI is not permanent. Track your amortization schedule and submit a cancellation request the moment your loan-to-value ratio hits 80% — don't wait for your lender to do it automatically.
Neither term is universally "better" — the right choice depends on your cash flow, financial goals, and risk tolerance. Here's a direct comparison on a $350,000 loan at 6.5%:
| 15-Year Mortgage | 30-Year Mortgage | |
|---|---|---|
| Monthly Payment (P&I) | ~$3,050 | ~$2,212 |
| Total Interest Paid | ~$199,000 | ~$446,000 |
| Interest Savings | — | Pay ~$247,000 more |
| Build Equity | Much faster | Slower |
| Monthly Cash Flow | Tighter | More flexible |
| Best For | High earners, near retirement | First-time buyers, tight budgets |
⚠️ Pitfall: Choosing a 15-year mortgage to "save on interest" can backfire if the higher payment strains your monthly cash flow. A 30-year mortgage with voluntary extra principal payments gives you the same payoff acceleration — with a safety net if income drops.
Most conventional lenders require a minimum credit score of 620, but the rate you receive depends heavily on how far above that floor you score.
| Credit Score Range | Loan Options Available | Rate Impact |
|---|---|---|
| 760 + | All loan types; best rates | Lowest available |
| 700–759 | Conventional, FHA, VA, USDA | Slightly above best |
| 660–699 | Conventional (higher PMI), FHA | Moderate premium |
| 620–659 | Limited conventional; FHA preferred | Significant premium |
| 580–619 | FHA only (3.5% down minimum) | High premium |
| Below 580 | FHA with 10% down; very limited options | Very high cost |
⚠️ Critical Warning: Free credit score apps (Credit Karma, etc.) typically show your VantageScore, which often runs 20–50 points higher than the FICO 2/4/5 scores mortgage lenders actually pull. Always request a lender's credit check before assuming you qualify at a given rate tier.
There are six proven levers to reduce your monthly payment — some apply before closing, others work even after you've already bought.
Before you buy:
- Increase your down payment — every extra dollar reduces your loan principal and may eliminate PMI
- Buy at a lower price point — consider homes 10–15% below your maximum budget to build payment cushion
- Improve your credit score — moving from 680 to 740 can shave 0.25%–0.75% off your rate
- Extend your loan term — a 30-year term lowers monthly payments vs. a 15-year (but increases total interest)
- Shop multiple lenders — rate variance between lenders on the same loan can exceed 0.5%, worth thousands over the loan life
After you've closed:
- Refinance when rates drop — a general rule: refinancing makes sense if you can lower your rate by at least 0.75% and plan to stay in the home long enough to recoup closing costs
- Request PMI cancellation — once you reach 20% equity, you can formally request removal
💡 Actionable Benchmark: Use this calculator to run a "break-even analysis" on refinancing — divide your closing costs by your monthly savings to see how many months it takes to come out ahead.