MyVault

tools_mortgage.title

tools_mortgage.subtitle

tools_loan.loan_details
tools_mortgage.loan_details_desc
$300,000.00
$50,000.00$1,000,000.00
4.5%
1%20%
tools_debt.years_count
tools_debt.years_counttools_debt.years_count
$60,000.00
0%20%
tools_mortgage.results
tools_mortgage.results_desc
tools_mortgage.monthly_payment
$1,566.04
tools_mortgage.principal_interest$1,216.04
tools_mortgage.taxes_insurance$350.00
tools_mortgage.pmi$0.00
tools_mortgage.total_loan_amount$240,000.00
tools_mortgage.total_interest_paid$197,776.11
tools_mortgage.total_payments$563,776.11
tools_loan.payoff_dateJune 2056
tools_mortgage.amortization_title
tools_mortgage.amortization_desc
tools_mortgage.monthtools_mortgage.paymenttools_mortgage.principaltools_mortgage.interesttools_mortgage.remaining_balance
1$1,216.04$316.04$900.00$239,683.96
2$1,216.04$317.23$898.81$239,366.73
3$1,216.04$318.42$897.63$239,048.31
4$1,216.04$319.61$896.43$238,728.69
5$1,216.04$320.81$895.23$238,407.88
6$1,216.04$322.02$894.03$238,085.86
7$1,216.04$323.22$892.82$237,762.64
8$1,216.04$324.43$891.61$237,438.21
9$1,216.04$325.65$890.39$237,112.56
10$1,216.04$326.87$889.17$236,785.68
11$1,216.04$328.10$887.95$236,457.58
12$1,216.04$329.33$886.72$236,128.26
tools_mortgage.tips_title
  • tools_mortgage.tips.down_label tools_mortgage.tips.down_text
  • tools_mortgage.tips.term_label tools_mortgage.tips.term_text
  • tools_mortgage.tips.extra_label tools_mortgage.tips.extra_text
  • tools_mortgage.tips.refi_label tools_mortgage.tips.refi_text

Understanding Your Mortgage Payment

A mortgage calculator helps you estimate the true monthly cost of buying a home before you ever sign a contract. Most first-time buyers focus only on the sticker price of the property, but the monthly check you actually write covers four very different things: the principal you owe the lender, the interest charged on that balance, the property taxes your local government collects, and the insurance that protects the home against damage. Lenders bundle these together into a single payment known as PITI — principal, interest, taxes, and insurance. Our calculator breaks each component out so you can see exactly where your money goes and how each lever changes the bottom line.

Use this tool when you are shopping for a house, comparing two loan offers, deciding between a 15-year and a 30-year term, weighing whether to put more money down to avoid PMI, or simply checking that a target home is within budget. Move the sliders and the results recompute instantly. The amortization schedule below shows how each early payment is almost entirely interest, then gradually shifts toward principal as the years go by — a pattern that makes extra principal payments in the first decade dramatically more powerful than the same dollars paid later.

How a Mortgage Payment Is Calculated

The monthly principal and interest portion of a fixed-rate mortgage is calculated using the standard amortization formula. It looks intimidating, but every variable has a clear meaning.

M = P · r(1+r)n / ((1+r)n − 1)
  • M — monthly principal & interest payment
  • P — loan principal — the amount actually borrowed (home price minus down payment)
  • r — monthly interest rate, expressed as a decimal — annual rate divided by 12
  • n — total number of monthly payments — loan term in years multiplied by 12

The formula above only covers principal and interest. Most lenders also collect property taxes and homeowner's insurance monthly through an escrow account, and add private mortgage insurance (PMI) if your down payment is below 20%. The full monthly payment most homeowners actually budget for is therefore:

PITI = M + (Tax / 12) + (Insurance / 12) + PMI

Property tax is set by your county or municipality and typically ranges from 0.3% to 2.5% of the home's assessed value per year, depending on location. The calculator divides the annual figure by 12 to get the monthly portion.

Homeowner's insurance protects the dwelling and your liability. Most lenders require it as a condition of the loan. Annual premiums in the United States average around $1,200 but vary widely with home value, location, and coverage.

Private mortgage insurance applies only when your down payment is less than 20% of the home price. PMI typically costs 0.3% to 1.5% of the original loan amount per year. Once your loan-to-value ratio drops below 80%, you can usually request to have PMI removed — sometimes worth thousands of dollars over the life of the loan.

A Worked Example

Suppose you are buying a $300,000 home with a 20% down payment of $60,000, leaving a $240,000 loan at 4.5% interest over 30 years. Annual property tax is $3,000 and homeowner's insurance is $1,200. Because the down payment is exactly 20%, no PMI is required.

Plugging the numbers into the formula: monthly rate r = 0.045 / 12 = 0.00375, total payments n = 30 × 12 = 360. The principal-and-interest portion comes out to about $1,216 per month. Adding $250 of taxes ($3,000 / 12) and $100 of insurance ($1,200 / 12) gives a full PITI payment of roughly $1,566 per month.

Switch the same loan to a 15-year term and the principal-and-interest payment jumps to about $1,836, but you pay only around $90,000 in total interest — versus roughly $198,000 of interest over 30 years. The shorter term costs more each month but saves more than $100,000 over the life of the loan.

Adding just $200 of extra principal each month to the 30-year loan would shorten the payoff to about 23 years and save more than $50,000 in interest. This is why financial advisors so often recommend small, consistent extra payments early in the loan rather than refinancing or one-time lump sums later.

Mortgage Calculator FAQ

What is included in a mortgage payment?

Most mortgage payments include four parts, abbreviated as PITI: principal (the amount you owe), interest (the lender's charge), property taxes, and homeowner's insurance. If your down payment is below 20%, private mortgage insurance (PMI) is also added. Some HOAs and condo fees are paid separately and not included in PITI.

Should I choose a 15-year or 30-year mortgage?

A 15-year mortgage typically carries a lower interest rate and saves a great deal of total interest, but the monthly payment is significantly higher. A 30-year mortgage gives you flexibility — lower required payments with the option to make extra principal payments when you can. Many buyers choose a 30-year loan and informally pay it off in 20 to 25 years.

How much do I need for a down payment?

Conventional loans usually require 5–20%; FHA loans allow as little as 3.5%; VA and USDA loans can go as low as 0% for qualified borrowers. Putting down 20% lets you avoid PMI and reduces your monthly payment, but requires significant cash. Use the calculator to compare scenarios with different down payment amounts.

What is PMI and how do I avoid it?

Private mortgage insurance protects the lender if you default. It applies when your down payment is below 20%. To avoid PMI, you can put down 20% upfront, take a piggyback second mortgage, or choose a lender-paid PMI structure (which usually means a slightly higher rate). Once your loan-to-value drops below 80%, you can request PMI removal.

What is amortization?

Amortization is the process of paying off a loan with regular fixed payments where each payment covers both interest and principal. In the early years, most of your payment goes to interest; as the balance shrinks, more goes to principal. The amortization schedule above shows this breakdown month by month for the first year.

How much do extra payments save?

A surprising amount, especially early in the loan. On a 30-year $240,000 loan at 4.5%, paying just $100 extra per month shortens the payoff by about 5 years and saves roughly $30,000 in interest. The earlier you start, the bigger the benefit, because early extra principal eliminates many years of compounded interest charges.

When does refinancing make sense?

Refinancing usually pays off if you can lower your rate by at least 0.5–1.0 percentage point, plan to stay in the home long enough to recover closing costs (often 2–5% of the loan), and your credit score has not dropped. Use the calculator to model the new payment, then compare lifetime interest savings to refinancing costs.

What is escrow?

An escrow account is held by your lender to pay property taxes and insurance on your behalf. Each month, a portion of your payment is set aside; when bills come due, the lender pays them from this account. Escrow is mandatory on most loans with PMI and many government-backed loans. It simplifies budgeting because you do not get a large annual tax bill out of nowhere.

How does the interest rate affect my payment?

Interest rate is the single largest driver of total cost. On a $240,000 30-year loan, a 1% rate change moves the monthly principal-and-interest payment by roughly $140 and shifts total lifetime interest by tens of thousands of dollars. Always compare offers using APR rather than nominal rate, since APR includes most lender fees.

Are these results an official quote?

No. The calculator gives an accurate mathematical estimate based on your inputs, but a real mortgage offer also depends on your credit score, debt-to-income ratio, employment history, the property appraisal, and the specific loan program. Use this tool to plan and compare; get a Loan Estimate from a lender for binding numbers.

Related Calculators

Buying a home is rarely a standalone decision. These related tools help you see the bigger financial picture:

These calculators are provided for educational and planning purposes only. Results are estimates based on the inputs you provide and do not constitute financial, tax, or legal advice. Actual loan terms, returns, and fees vary by lender, jurisdiction, and individual circumstances. Always consult a qualified professional before making major financial decisions.