Mortgage Calculator with Extra Payments - PITI, Taxes, Insurance & Amortization
A mortgage calculator with extra payments estimates your full monthly housing payment - principal, interest, property tax, homeowners insurance, and PMI when your down payment is under 20% - then models how added principal shortens your payoff timeline. On a $400,000 home with 20% down at 6.5% for 30 years, principal and interest run about $2,028 per month; with $400/month tax and $100/month insurance, total PITI is roughly $2,528. Adjust rate and term to see your payment change, then enter an extra monthly payment to see interest saved on the built-in amortization schedule you can export to CSV or printable PDF. For dedicated early-payoff or biweekly-payment scenarios, use the Mortgage Payoff Calculator and Biweekly Payment Calculator in the related tools below.
Loan Details
$70,000 · LTV 80%
Buyer Profile
Extra Payment
Optional principal-only payment used to estimate payoff speed and interest savings.
Monthly Payment
$1,770 Principal & Interest · $321 Property Taxes · $125 Other
Methodology and limitations
Last reviewed:
Methodology
Uses standard principal-and-interest mortgage math, then models housing-cost inputs such as tax, insurance, PMI, and extra-payment scenarios where available. National pages include worked PITI, term, and PMI comparison examples for planning.
Limitations
Planning estimate only. Actual approval, escrow, PMI, fees, taxes, insurance, and closing disclosures depend on lender, property, borrower profile, and local rules.
How this mortgage calculator works (PITI)
This mortgage calculator estimates your full monthly housing payment (PITI): principal, interest, property tax, and homeowners insurance, plus PMI when your down payment is under 20%. On a $400,000 home with 20% down at 6.5% for 30 years, principal and interest run about $2,023 per month; with $400 tax and $100 insurance, total PITI is roughly $2,523.
Enter home price, down payment, rate, and term. The calculator applies the standard amortization formula to the loan amount, estimates tax and insurance, models PMI when LTV exceeds 80%, and lets you add extra principal to see interest saved and months removed. Export the schedule to CSV or printable PDF.
PITI breakdown for the $400,000 example
| Component | Monthly amount | What it covers |
|---|---|---|
| Principal & interest | ~$2,023 | Fixed payment on a $320,000 loan at 6.5% for 30 years |
| Property tax (escrow) | $400 | Estimated annual tax divided across 12 months |
| Homeowners insurance | $100 | Estimated annual premium divided across 12 months |
| PMI | $0 | Avoided with 20% down on a conventional loan |
| Total PITI | ~$2,523 | Estimated housing payment before HOA or other costs |
15-year vs 30-year mortgage (same rate)
On the same $320,000 loan at 6.5%, a 15-year term raises the monthly payment but cuts total interest by roughly half versus 30 years. Choose 15 years if cash flow allows; choose 30 years if you need a lower payment and more flexibility.
| Term | Monthly P&I | Total interest | Total paid (P&I) |
|---|---|---|---|
| 15-year fixed | $2,791 | $182,380 | $502,380 |
| 30-year fixed | $2,023 | $408,100 | $728,100 |
Planning figures at a shared 6.5% fixed rate. Real 15-year rates are often slightly lower; enter current quotes in the calculator for your scenario.
PMI by down payment percentage
Private mortgage insurance (PMI) usually applies on conventional loans when your down payment is under 20% (LTV above 80%). Lower down payments mean higher LTV and typically higher estimated monthly PMI.
| Down payment | Cash down | Loan amount | PMI applies? | Note |
|---|---|---|---|---|
| 3% | $12,000 | $388,000 | Yes · ~$226/mo | Highest LTV; PMI applies |
| 5% | $20,000 | $380,000 | Yes · ~$206/mo | Common conventional minimum |
| 10% | $40,000 | $360,000 | Yes · ~$150/mo | Lower PMI than 3–5% down |
| 15% | $60,000 | $340,000 | Yes · ~$99/mo | Closer to cancellation threshold |
| 20% | $80,000 | $320,000 | No | Typically avoids conventional PMI |
PMI premiums vary by credit score, LTV, and insurer. Sources: CFPB PMI guidance. You can often cancel PMI once LTV reaches about 80% under your loan's rules. Sources: CFPB PMI , Freddie Mac PMMS , FHFA .
Mortgage Amortization Schedule
This calculator estimates a monthly mortgage payment and shows how the loan amortizes over time. Each payment is split between interest and principal, and the remaining balance falls until the loan is paid off.
For a general principal-and-interest schedule with start date, CSV export, and PDF export controls, use the loan amortization table calculator .
Quick answer
A mortgage amortization schedule shows how the principal-and-interest part of a home loan is paid down. It does not reduce property tax, home insurance, PMI, or HOA dues; those costs can affect the monthly housing payment, but they do not pay down the loan balance.
Amortization vs. total housing payment
Amortization explains the loan itself. A full monthly mortgage payment can include PITI: principal, interest, taxes, and insurance. PMI, HOA dues, and other costs may raise the payment, but they are outside the loan amortization formula.
What the mortgage amortization schedule shows
- Estimated monthly principal and interest payment
- Interest paid in each period
- Principal applied to the loan balance
- Remaining balance after each payment
- Estimated total interest over the life of the loan
How extra mortgage payments change the schedule
An extra monthly payment is treated as additional principal. That can reduce total interest and move the payoff date earlier because future interest is calculated on a smaller balance.
Example: why early mortgage payments are interest-heavy
On a fixed-rate mortgage, monthly interest is calculated from the outstanding balance. Early in the loan, that balance is high, so more of the payment goes to interest. As the balance falls, less interest accrues and more of each payment reduces principal.
Amortization formula used
The principal-and-interest portion uses the standard fixed-payment formula:
Payment = P x r(1 + r)^n / ((1 + r)^n - 1)
In the formula, P is the loan amount, r is the monthly interest rate, and n is the total number of payments. Taxes, insurance, and PMI are estimated separately so the calculator can show a fuller monthly housing payment.
Frequently Asked Questions
What does this mortgage calculator include?
This mortgage calculator with taxes and insurance estimates your full monthly housing payment using the standard amortization formula for principal and interest, then adds property tax, homeowners insurance, and PMI when your down payment is under 20%. You also get a mortgage amortization schedule showing how each payment splits between interest and principal, plus an extra-payment scenario to see interest saved and months shaved off your loan.
When does PMI apply on a mortgage?
Private Mortgage Insurance (PMI) is typically required when your loan-to-value ratio exceeds 80%, meaning your down payment is less than 20% of the home price. PMI usually costs 0.2% to 1.5% of the loan amount annually and is added to your monthly payment until you reach 20% equity. Some borrowers cancel PMI after appraisal or pay down principal faster; this calculator models PMI when your down payment triggers it. Source: CFPB PMI guidance.
How do I remove PMI from my mortgage?
You can usually request PMI cancellation once your loan balance reaches 80% of the original home value through principal payments, or when scheduled amortization hits that mark. Servicers must automatically terminate PMI at 78% LTV for many conventional loans if you are current. An appraisal-based removal may also be available sooner if values rose. Confirm your loan's cancellation rules with the servicer; FHA loans use MIP with different duration rules than conventional PMI.
Is a 30-year or 15-year mortgage better?
A 15-year mortgage usually carries a lower interest rate and builds equity faster, but monthly payments are higher because you repay the loan in half the time. A 30-year mortgage keeps payments lower and preserves cash flow, though you pay significantly more total interest over the life of the loan. Use this calculator to compare both terms with the same home price, down payment, taxes, and insurance to see the monthly payment and total interest difference.
How much house can I afford with this mortgage calculator?
Start from a target monthly housing budget, then reverse-engineer home price, down payment, rate, and term until PITI fits that budget. Many lenders use a front-end guideline near 28% of gross income for housing costs and a back-end DTI near 36% including other debts, but program limits vary. Pair this calculator with the Home Affordability Calculator and DTI Mortgage Calculator for income-based checks before you shop.
How much down payment do I need for a mortgage?
Conventional loans often allow as little as 3% down, while 20% down typically avoids PMI and lowers monthly payment. FHA loans allow 3.5% down with mortgage insurance premiums, and many VA loans allow 0% down for eligible borrowers. Larger down payments reduce loan amount, interest paid, and LTV risk. Enter different down-payment percentages here to see how payment, PMI, and total interest change for the same home price.
Are property taxes included in a mortgage payment?
Yes, for most escrowed loans property taxes are collected monthly as part of PITI and held until the tax bill is due. The tax amount depends on assessed value and local rates, not the amortization formula. This calculator estimates monthly tax from your inputs or local defaults so the payment shown is closer to a full housing payment, not just principal and interest.
What is the difference between escrow and principal on a mortgage?
Principal is the loan balance you owe the lender; each payment reduces it after interest is covered. Escrow is a separate account the servicer uses to pay property taxes and homeowners insurance on your behalf. Escrow amounts do not pay down the mortgage balance. Extra principal payments shrink interest cost and payoff time; escrow changes only affect the tax and insurance portion of your monthly bill.
What interest rate should I use in a mortgage calculator?
Use the rate from a lender pre-approval or Loan Estimate for the most accurate monthly payment. If you do not have one yet, the Freddie Mac Primary Mortgage Market Survey average for a 30-year fixed loan is a reasonable planning baseline. Your actual rate depends on credit score, loan type, points, lock period, and market conditions, so treat calculator results as estimates until you have an official quote.
Should I choose a fixed-rate mortgage or an ARM?
A fixed-rate mortgage keeps the same interest rate and principal-and-interest payment for the full term, which helps long-term budgeting. An adjustable-rate mortgage (ARM) usually starts lower, then can reset after an introductory period based on an index plus margin, so payments may rise. Choose fixed if you plan to stay long or want payment certainty; consider an ARM only if you understand reset risk and may sell or refinance before adjustments.
What drives my mortgage interest rate?
Mortgage rates move with broader bond markets and lender pricing, then adjust for your credit score, down payment, loan amount, occupancy, property type, and whether you buy discount points. Loan program (conventional, FHA, VA, jumbo) and lock timing also matter. Use a realistic rate from a current quote in this calculator; small rate changes can shift monthly payment and lifetime interest by thousands of dollars.
When does refinancing a mortgage make sense?
Refinancing can make sense when a lower rate, shorter term, or cash-out need outweighs closing costs. A simple break-even check divides refinance closing costs by monthly payment savings; if you will keep the loan longer than that break-even period, the refinance may pay off. Also weigh remaining years, prepayment plans, and whether you reset amortization. Use this calculator for the new loan scenario, then compare against your current payment.
Does this mortgage calculator include closing costs?
No. Closing costs - typically 2% to 5% of the loan amount - are one-time expenses paid at settlement and are not included in the monthly PITI estimate here. This tool focuses on recurring monthly costs: principal, interest, property tax, insurance, and PMI. For closing-cost planning, review your Loan Estimate from the lender or use the Closing Cost Estimator linked in related tools.
What is a mortgage amortization schedule?
A mortgage amortization schedule is a table that shows how each monthly payment is split between interest and principal and how the remaining loan balance declines over time. Early in a 30-year loan, most of each payment goes to interest; later payments apply more to principal. This calculator builds a full amortization table you can review to see total interest paid, payoff date, and how extra principal payments change the schedule.
How do extra mortgage payments affect amortization?
Extra mortgage payments reduce principal sooner, so future interest is calculated on a smaller balance. Even modest monthly add-ons can cut thousands in total interest and move your payoff date earlier without changing your required payment amount. Enter an extra principal payment in the calculator to compare base versus accelerated schedules and see estimated interest saved and months removed from the loan term.
Is this a mortgage calculator with extra payments?
Yes. Enter an optional extra monthly principal payment to see how it changes your amortization schedule, total interest, and payoff date alongside PITI. For lump-sum or larger payoff planning, use the Mortgage Payoff Calculator. For biweekly half-payments that add one extra payment per year, use the Biweekly Payment Calculator - both are linked in the related tools on this page.