住宅ローン
計算機

SoFi住宅ローン返済計算ツールへようこそ。夢のマイホームを見つけた方も、購入予算に迷っている方も、あるいは既にマイホームを所有していて借り換えを検討している方も、この計算ツールを使えば、毎月の住宅ローン返済額とローン期間中の利息額を簡単に計算できます。さあ、計算を始めましょう。

ステップ 1: プロパティの値を入力します。

希望する住宅の価値または定価、あるいは借り換えを希望する住宅の現在の推定価値を使用します。

ステップ2: 頭金の金額または割合を入力します

頭金は少なくとも3%を入力してください。住宅ローンの借り換えを検討している場合は、現在の住宅の自己資金額（現在の住宅推定価値から現在の住宅ローンの残額を差し引いた金額）を入力してください。

頭金の金額を入力すると、住宅ローン返済額計算ツールが頭金の割合を計算します。逆の場合も同様です。頭金の割合を入力して、必要な頭金を確認することもできます。物件の頭金を20%にすると、民間住宅ローン保険（PMI）の支払いを回避できますが、多くの住宅購入者、特に初めて住宅を購入する人は、頭金を20%未満に抑えています。

If you think you will need to borrow more than $766,550 to purchase a home, you’re likely a candidate for a jumbo loan and a lender may require you to put down at least 10%. (Some pricier areas have higher minimums for jumbo loans — enter the zip code of the location you’re shopping in at Fannie Mae’s mapping tool to see the jumbo loan number for your area.)

Step 3: Enter an interest rate.

Plug in the day’s average fixed rate for a 15- or 30-year mortgage, or use the rate a lender has suggested you may qualify for.

Step 4: Choose a loan term.

The term is the number of years the loan will last. The lower the term, the higher the monthly payment but the greater the savings in total interest paid.

Understanding the Results

The calculator will immediately show the following results:

•  Loan amount: This is the amount you would borrow, also known as the principal.

•  Monthly payment: This is what you would pay toward the principal and interest each month. Remember that you will also need to pay for property taxes, homeowners insurance, and perhaps homeowners association (HOA) fees and private mortgage insurance (PMI). Some of these costs will be higher or lower depending on the cost of living in your area.

•  Total interest paid: This is the amount of interest paid over the life of the loan.

•  Payoff date: Here, the mortgage loan calculator shows the day you’d pay off your mortgage unless you refinanced or paid it off early.

•  Amortization chart: This chart shows interest paid, principal paid, and the remaining amount of the loan with each mortgage payment. Move your cursor to the right to see how payments are amortized over time. The amortization chart can also serve as a mortgage payment calculator: As you move your cursor you can see how much money would be required to pay off the principal you owe at different times during the loan. If you do want to pay off your mortgage, get the exact amount due from your lender.

Benefits of Using a Mortgage Payment Calculator

Mortgages can be complicated, especially if you’re buying your first home, but there are many ways a mortgage payment calculator can help. Playing with different property values can give you a general idea of how a home’s price might impact your monthly payments and what a mortgage loan may cost in total over the life of the loan.

It’s also helpful to use a home mortgage calculator to compare the monthly payment for different types of mortgage loans (15- vs. 30-year terms). And it’s useful to see how sizing up (or trimming back) your down payment amount might affect your monthly costs. (If you think you might struggle to come up with any down payment at all, there are down payment assistance programs that can help.)

The only downside of using a mortgage calculator? As noted above, many mortgage calculators don’t include property taxes, homeowners insurance, mortgage insurance, or HOA fees — so they don’t provide a complete picture of the recurring expenses on a property. And of course the numbers you get from a mortgage calculator are only as solid as the numbers you put in: If you put in a low interest rate that you can’t qualify for because of steep debts or a shaky credit history, your actual results in the mortgage market will differ.

Formula for Calculating a Mortgage Payment

The mathematical formula for a home mortgage calculator is pretty complicated, which is why this calculator is so handy. If you wanted to do the math by hand, your formula would look like the one below. In this example:

  M = Monthly mortgage payment

  P = Principal (the amount you borrow)

  R = Your base interest rate. (Use the base rate, not the APR.) You’ll divide this by 12 because the rate is an annual one and you are solving for a monthly payment amount.

  N = Number of payments in your loan term. A 15-year term, for example, would have 180 monthly payments.

  M = P [R(1 + R)ⁿ] / [(1 + R)ⁿ − 1]²

Deciding How Much House You Can Afford

Using a mortgage calculator is one way to begin to get a handle on how much house you can afford. You can also use a home affordability calculator , which will take into account your annual income and debts to generate a maximum home price that would be within your budget.

There are also longstanding guidelines for homebuyers that can help you determine what you can afford. One is the 28/36 rule, which states that your total mortgage payment, including principal, interest, taxes, and insurance, should not exceed 28% of your gross income, and your mortgage payment plus any other debt payments should not exceed 36% of your gross income. To learn what your monthly limits would be under the 28/36 rule, simply multiply your monthly gross income by 0.28 and again by 0.36.

Recommended: Average Monthly Expenses for One Person

Additionally, before you settle on a location, do your homework on the cost of living and mortgage rates. It might just surprise you.

Current Mortgage Rates by State

Alabama

Alaska

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

Florida

Georgia

Hawaii

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Jersey

New Mexico

New York

North Carolina

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

How Lenders Decide How Much You Can Afford to Borrow

There’s another important calculation involved in the homebuying process: the number-crunching a prospective lender will do to determine the size of loan and terms you might qualify for. Each lender has its own formula, but in general a lender will be looking at your debt-to-income ratio, which is your total debt divided by your total income, shown as a percentage. (Generally, lenders are looking for 43% or less.)

Lenders will also examine your credit history, your income history, your down payment amount, and other factors to arrive at whether you are a good candidate for a loan and, if so, what terms you’ll be offered.

What’s Next: Get Preapproved for a Mortgage Loan

Once you’ve used a mortgage calculator to estimate how much you might be able to pay for a house, you can get prequalified for a mortgage with a few lenders to obtain a clearer idea of what interest rate and loan amount a lender might offer you, based on a high-level look at your finances. As you get serious about home-shopping, you’ll want to take the next step and get preapproved for a mortgage with at least one lender.

Going through the mortgage preapproval process involves a thorough review of your credit and financial history. If you seem to be a good candidate for a home loan, the lender will give you a letter stating that you qualify for a loan of a certain amount and at a certain interest rate. The letter is an offer, but not a firm commitment. It’s typically good for up to 90 days. If you’re competing with other buyers in a hot market, being preapproved for financing will make you more attractive to sellers.

Recommended: Best Affordable Places in the U.S.

Components of a Mortgage Payment

Principal and interest are the foundation of a mortgage payment, and the amount of your monthly payment that goes to each of these expenses changes over the life of the loan, with more of the payment being applied to interest costs early in the life of the loan. As you make payments over the years, more money will gradually go toward paying down the principal.

Typical Costs Included in a Mortgage Payment

Principal and interest aren’t the whole story. Maybe you’ve heard of PITI, which stands for principal, interest, taxes, and insurance. Property taxes and homeowners insurance costs can often be rolled into mortgage payments. The money is held in an escrow account, and payments are then made by your mortgage servicer. You can decide whether taxes and insurance become part of your monthly mortgage payment when you choose your home mortgage loan.

Tips on Reducing Your Mortgage Payment

After you’ve had your home loan for a while, you might be interested in lowering your mortgage payments. One way is to apply any bonus or windfall to the principal. Another option might be to refinance to a lower interest rate. Maybe rates have dropped or your credit score has improved significantly since you bought your home — in this case, a refinance might offer real savings. You can put a lower interest rate into a mortgage payment calculator to see how a refinance would affect your monthly payments and interest paid over the life of a new loan.

Another way to reduce your monthly payment: If your equity in the home has hit 20% of its original value (the value when you purchased it), you can write to request that your lender cancel PMI. As long as the property has held its value, you have kept current on your monthly payments, and there are no liens or additional mortgages on the home, your request should be granted.

The Takeaway

A mortgage payment calculator can give you an idea of what your monthly mortgage payments would look like based on how much you spend on a house, what size down payment you make, and what interest rate you obtain. It’s also a good way to see how much interest you would pay over the life of a loan. Getting prequalified for a home loan with one or more lenders will give you an even clearer idea. And obtaining a mortgage preapproval will tell you exactly how much you may qualify to borrow from a lender and what your monthly payments might be.

FAQ

What is a mortgage payment?

A borrower makes monthly payments, typically made up of principal, interest, taxes, insurance, and any private mortgage insurance required by the lender. With a fixed-rate mortgage, monthly payments stay the same, but the amount of each payment that is put toward principal vs. interest is divvied up differently over time. A mortgage loan calculator can show what monthly payments would be based on different loan types and interest rates.

How does my credit score affect my mortgage loan interest rate?

Those with the highest scores get the lowest rates. Even a small increase in rate can make a big difference over the life of a loan.

What is principal and interest on a mortgage loan?

The principal is the amount borrowed. The interest is the price paid for borrowing.

How much should I put down on a mortgage?

Twenty percent down on a conventional loan is ideal, but most people are not able to come up with that much. Some conventional and government-backed loans allow for low down payments or none at all.

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

If you can comfortably swing the payments on a 15-year mortgage and you have emergency and retirement savings, the shorter loan term could be a smart choice because the total savings in interest will be substantial.

How can I get a lower mortgage interest rate?

Advertised rates are often misleading, so shoppers beware. Many house hunters ask for loan estimates from several lenders after applying for a mortgage. Be sure to examine the details and compare apples to apples. There may be room to negotiate with a chosen lender. FHA, VA, and USDA loans may have lower rates than conventional loans (but they require either mortgage insurance or fees).

How much income do you need for a $400,000 mortgage?

It would take an annual income of about $130,000 to afford a $400,000 mortgage. If you have significant debts, you might need to earn more.

Can I afford a $300K house on a $70K salary?

One rule of thumb is that your home’s cost should not be more than three times your annual income. So it would be difficult to cover the costs of a $300,000 house on a $70,000 salary — unless you are able to contribute a large down payment. Use a home affordability calculator to zero in on your personal budget number.

What is a livable hourly wage?

The living wage in the United States is $25.02 per hour, or $104,077.70 per year (before taxes) for a household of two working adults and two kids, according to 2022 analysis from the Massachusetts Institute of Technology Living Wage Calculator. This is a national average, and your personal number will depend on costs in your local area and your family size.

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