Home Loan Calculator: Estimate Your Monthly Mortgage Payment

What is a home loan calculator?

A home loan calculator estimates the cost of borrowing to buy a home. First, it subtracts your down payment from the home price. Then it applies your interest rate across your loan term. The result shows a monthly payment, plus total interest. So the tool turns a big price into clear monthly numbers.

Also, the tool helps you test choices before you talk to a lender. For example, you can raise the down payment and watch the payment fall. Or you can shorten the term and watch total interest drop. Each test takes seconds, and the tool stores nothing.

In short, the home loan calculator gives you a clear starting point. Then you can shop for homes and loan offers with real numbers in hand. That makes each conversation with a lender much more focused.

How do you calculate a home loan?

You calculate a home loan with the standard amortization formula. First, you subtract the down payment to find the loan amount. Then you turn the yearly rate into a monthly rate. Next, you spread the loan across every monthly payment. The formula then balances principal and interest across the full term.

The home loan calculator above runs this formula for you:

Monthly payment = P × r(1 + r)^n ÷ ((1 + r)^n − 1)

• P is the loan amount, after you subtract the down payment.
• r is the monthly interest rate, so divide the yearly rate by 12.
• n is the number of payments, so multiply the years by 12.

Also, each payment splits between principal and interest. Early payments carry more interest, because the balance starts high. Later payments carry more principal, because the balance falls over time. Lenders call this schedule amortization. The payment stays level, but the split changes each month.

How do you use this home loan calculator?

Using this home loan calculator takes under a minute. First, enter the full home price in the first box. Then enter your down payment and interest rate. Next, enter the loan term in years. Finally, click Calculate and read three results. You will see monthly payment, total interest, and total cost.

1. Enter the home price.
2. Enter your down payment.
3. Enter the interest rate as a yearly percent.
4. Enter the loan term in years, such as 15, 20, or 30.
5. Click Calculate, and check the three results.

Also, you can run the tool as often as you like. Just change one number and calculate again. No sign-up is needed, and the tool runs in your browser. So test a higher rate before you commit to a home.

Worked example: a $350,000 home with 20% down

This worked example uses the same numbers many buyers try first. The home price is $350,000, and the down payment is $70,000. That down payment equals 20% of the price. So the loan amount is $280,000. The rate is 6.5%, and the term is 30 years.

• Loan amount: $350,000 − $70,000 = $280,000.
• Monthly rate: 6.5% ÷ 12 = 0.5417%.
• Number of payments: 30 × 12 = 360.
• Monthly payment: the formula gives $1,769.79.

Next, multiply the monthly payment by 360 payments. That gives a total cost of $637,125 for the loan. Then subtract the $280,000 loan amount from that total. The result is $357,125 in total interest. So slow, steady interest builds into a very large sum.

Also, note what this example leaves out. It excludes taxes, insurance, and closing costs. Your full monthly housing cost will sit above $1,769.79. The sections below explain those extra costs in plain terms. And the home loan calculator matches this hand math.

What is a good interest rate for a home loan?

A good interest rate is a rate below the offers you get for your credit profile. Rates change often, and lenders price each loan by risk. So a strong rate for one buyer may differ for another. Compare the rate with fees and closing costs. Then judge the full loan, not the rate alone.

Also, judge a rate by the market on the day you shop. Rates move with the wider economy, and they change without warning. So get quotes from more than one lender on the same day. Then compare each quote on equal terms. Then run the winning quote through the home loan calculator.

For example, the Consumer Financial Protection Bureau’s homebuying resources explain how to compare loan offers step by step. Also, our percentage increase calculator shows how much a payment grows, in percent, when a rate rises. Both tools help you check a quote before you sign.

In short, a good rate also fits a fair set of fees. Watch for discount points, lender fees, and closing costs. Each fee can erase the gain from a slightly lower rate. So compare the rate, the APR, and the cash you need at closing.

How much house can I afford?

You can afford a home when the full monthly cost fits your budget with room to spare. Start with your gross monthly income and your debts. Then add taxes, insurance, and upkeep to the loan payment. A common guide keeps housing near 28% of gross income. But your own budget gives the safer answer.

For example, say your gross pay is $84,000 a year. That equals $7,000 a month before tax. Then 28% of that income equals $1,960 a month. So your full housing cost should stay near that level. The full cost includes principal, interest, taxes, and insurance.

However, the 28% guide is only a starting point. Child care, car loans, and other debts can shrink what you can afford. A smaller payment also leaves room for repairs and savings. So choose a payment that still feels calm in a hard month.

Next, test your target price in the home loan calculator above. Lower the price until the payment fits your budget. Then add a cushion for taxes and insurance. That simple test stops you from falling for a home you cannot afford.

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

Choose a 15-year term when you can afford the higher monthly payment comfortably. Choose a 30-year term when you need a lower payment and more flexibility. The shorter term builds equity faster and costs far less interest. The longer term spreads payments out, but the loan costs more overall in the end.

The table below uses the same $280,000 loan at 6.5%, from the worked example. Monthly payments are rounded to the nearest dollar. Totals are rounded too, so use them as close guides. Try each term in the home loan calculator for your own figures.

Loan term	Monthly payment	Total interest	Total cost
15 years	$2,439	about $159,000	about $439,000
20 years	$2,088	about $221,000	about $501,000
30 years	$1,770	about $357,100	about $637,100

Also, look at the gap in total interest. The 15-year loan saves about $198,000 in interest versus the 30-year loan. But its payment is about $669 higher each month. So the best term depends on your monthly budget first. Equity growth comes second in that choice.

What do property taxes and homeowners insurance add?

Property taxes and homeowners insurance add a second layer on top of principal and interest. Lenders often collect both costs each month in an escrow account. Then the lender pays the tax bill and insurance bill when they come due. So your full housing payment is higher than the loan payment alone.

For example, property tax is based on your home’s assessed value and your local tax rate. Both vary by place, so two towns can charge very different bills. Homeowners insurance varies too, based on the home and the coverage you choose. So ask for local estimates before you set a budget.

Also, watch for two more costs. Private mortgage insurance often applies when your down payment is under 20%. And some homes carry monthly HOA dues for shared services. Both costs sit outside the results of this home loan calculator. So add them to the loan payment before you judge a home.

After you buy, upkeep adds smaller costs over time too. Our guide to what a carport is covers one common parking project for new owners. And our concrete stain guide explains a popular surface upgrade, with costs. Planning for projects keeps surprises out of your budget.

How can I lower my monthly home loan payment?

You can lower your monthly payment with a larger down payment or a lower rate. A longer term also lowers the payment, but it raises total interest. You can also choose a lower-priced home. Each option cuts the amount you borrow. So compare total interest too, not just the monthly payment alone.

• Raise your down payment, so you borrow less from the start.
• Improve your credit profile, then shop for a lower rate.
• Get quotes from several lenders, and compare fees as well.
• Choose a lower-priced home that still fits your needs.
• Pick a longer term only with care, since total interest rises.

In short, small changes can move the payment a lot. Test each idea in the home loan calculator above. Then watch both the monthly payment and total interest. A cheap monthly payment can hide a costly loan.

Related mortgage calculators

This home loan calculator covers principal and interest for a home loan. The related mortgage calculators below go deeper on the costs and checks around that payment, so you can build a fuller picture before you apply.

• monthly mortgage calculator with taxes and insurance – see your full monthly payment with property taxes and homeowners insurance included.
• online mortgage payment calculator – work out your monthly mortgage payment online from the price, down payment, rate, and term.
• calculate your debt to income ratio for a mortgage – check whether your debts and income are likely to fit a lender’s limits.
• home loan rate calculator – compare how a different interest rate changes your monthly payment and total interest.

Frequently asked questions

These short answers cover the questions buyers ask most about home loans. Each answer gives the key point first, in plain words. Then you can return to the calculator and test your own numbers. So use these answers as a quick check. They do not replace advice from a lender or adviser.

What does a home loan calculator not include?

This home loan calculator shows principal and interest only. It does not include property taxes or homeowners insurance. It also leaves out private mortgage insurance, HOA dues, and closing costs. Your lender adds the costs that apply to your loan. So treat the result as a loan estimate, not a full housing payment.

How much down payment do I need for a home loan?

The down payment you need depends on the loan type and the lender. Some loans allow a small down payment for qualified buyers. Many buyers aim for 20% of the home price. That level usually avoids private mortgage insurance on a conventional loan. A larger down payment also lowers the amount you borrow.

Does a home loan calculator show my exact payment?

No, this home loan calculator gives an estimate, not an exact final payment. Your lender sets the final rate, fees, and closing costs. Taxes and insurance also change the full amount you pay each month. Use the estimate to compare options and plan a budget. Then confirm the final figures on your Loan Estimate.

What credit score do I need for a home loan?

No single credit score fits every home loan. Each loan type and lender sets its own standards for approval. A higher score can help you qualify for a lower rate. A lower score can raise your cost or limit your options. So check your credit reports early, and fix errors before you apply.

Can I use this calculator for a refinance?

Yes, you can use this home loan calculator for a refinance estimate. Set the home price and down payment so the loan amount matches your balance. In other words, the price minus the down payment should equal what you owe. Then enter the new rate and term. Compare the result with your current payment.

What is the difference between interest rate and APR?

The interest rate is the cost of borrowing, shown as a yearly percent. APR is broader, so it includes the rate plus certain lender fees and costs. That is why APR is often higher than the interest rate. Compare APR and fees when you compare loan offers. Then check the monthly payment too.