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Home Loan Calculator: What You Can Afford and What You’ll Pay

Answer the real question: what can you afford? Not just what the payment looks like on a certain price. Use this home loan calculator to find out. Affordability isn’t given much thought when most home calculator loan tools start with a payment box. This is because a payment amount doesn’t mean much until you know it fits your budget and that you can afford it. It tells you what you can afford, how much you’ll pay each month when all costs are taken into account, and what you need to do to get accepted. We’ll also talk about the size of the down payment, single-family homes, and closing costs. No need to sign up or get in touch with a lender.

Question 1: What Home Loan Can You Afford?

Two debt-to-income (DTI) ratios the housing ratio and the total debt ratio—help lenders decide if a loan is affordable.

The housing ratio is found by dividing the proposed monthly rent by the gross monthly income. The total debt ratio equals all monthly debt payments, such as mortgage, divided by gross monthly income.

According to general conventional lending guidance, the housing ratio should be around 28% and the total debt ratio should be around 36%. However, the actual thresholds vary a lot by loan program and lender (source: general Fannie Mae/Freddie Mac conventional underwriting guidance, verified August 2026). Don’t assume that these general numbers apply to everyone; always ask the lender what specific limits they are using for your case.

Come with me as I go through a full example. A family makes a gross of $9,000 a month and has $500 in monthly debt payments.

The most you can pay for a house is $9,000 divided by 28%, which equals $2,520. Total debt ratio limit: $9,000 divided by 36% equals $3,240; subtract $500 from existing debt to get $2,740 for housing.

The lower of the two amounts is used, so this family can only make a monthly payment of $2,520.

Figuring out how much it would cost to buy, we know that after figuring out the estimated property taxes ($120/month), we are left with about $2,050 for the principal and interest. At a hypothetical rate of 6.5% for 30 years, that can support a loan of around $324,000. If you make a 20% down payment, you can avoid mortgage insurance, which we’ll talk about below. With a $81,000 down payment, the price of the house would be $405,000.

It’s important to keep this in mind: being able to qualify for an amount and being able to easily afford it are two different things. The only things that went into this formula were income and debt. It doesn’t know how much you want to save, how much you want to spend on child care, or how much you want to spend on hospital bills. For this reason, many financial experts say to stick to a budget below your maximum qualifying amount. This isn’t because the math is wrong, but because the math doesn’t know your whole life.

From personal experience, you should know that lenders will usually give buyers more money than they can afford to pay each month. Even if a lender says you can afford a $2,520 monthly payment, that doesn’t mean that’s what you should aim for. Plan your spending around the qualified amount, not as a goal. Also, don’t just work backward from what the math says you can afford; think about how much money you’d like to have left over each month after paying off your mortgage.

Question 2: What Will the Monthly Payment Be?

Part of the payment that often strikes first-time buyers the least is the part that’s not principal and interest. This is because the pieces that are added on top can add up to a big chunk of the total.

Using our example: a $324,000 loan at 6.5% over 30 years.

Using the standard amortizing formula, M = P × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1]:

Just the interest and principal add up to $2,048. When taxes, insurance, and HOA fees are added in, the full price is $2,568, which is about 25% more. This gap is what a simple payment formula doesn’t take into account, which is why cost must come first before a payment formula can be used.

How the Down Payment Changes Everything

The amount of your down payment isn’t just about how much cash you bring to close. The $405,000 price tag is shown here with four different down payment amounts, all at 6.5% over 30 years:

There are two things going on at the same time. First, it’s normal for each extra 5% down payment to lower both the monthly payment and the total interest. Second, and more importantly, making a 20% down payment gets rid of PMI completely, which saves you an extra $172 to $192 a month on top of the interest you save. That’s the biggest jump in the table, and if you can get 20% down, you should plan your next steps around it using a home loan calculator.

Question 3: Will You Be Approved?

The affordability of a payment tells you what amount you can afford. Approval is a whole different question, and it depends on a lot more than just the numbers above on the home loan calculator.

Your credit score is usually the most important thing that determines whether you get a loan and what rate you get. The debt-to-income ratio that you talked about in Question 1 is checked against your real application, not just a guess. Lenders usually want to see a consistent income history, and big changes in income recently can make it harder to get approved even if your numbers are good otherwise. Down payment source and seasoning are also looked at. Lenders usually want to see where the money for the down payment came from and how long it’s been in your account, since big deposits made at the last minute can raise questions. Lastly, the property appraisal must support the purchase price. If the appraisal comes in below the agreed price, the deal can fall through because the lender won’t lend more than the appraised value supports. This is true even if the borrower has good credit.

It’s important to know the difference between prequalification and preapproval because people use them in different ways. Prequalification is a quick estimate that is mostly based on your own information and has little to no proof. When you get preapproved, a lender checks your income, assets, and credit and usually gives you a real letter that you can use when you make an offer. Preapproval is much more important to sellers than an estimate because it shows that the loan has been approved.

In a market with a lot of competition, this difference can really make or break an offer. When looking at two similar offers, one with a preapproval letter and one with only a prequalification estimate, the seller will almost always choose the one with the preapproval because there is a much smaller chance that the financing will not go through in the end. If you want to make an offer soon, it’s worth the extra step to get preapproved instead of just prequalified.

Government-Backed Options

Along with traditional financing, there are two programs backed by the government. For more information on each, visit this site’s home loan calculator.

With an FHA loan, you can put down as little as 3.5% if you have good credit. However, you’ll have to pay mortgage insurance every month, which, depending on the size of your down payment, may last the whole loan term instead of going away as your equity grows. Check out our FHA loan tool for a full breakdown, which includes details on how to qualify and how long your mortgage insurance will last.

Veterans, active-duty service members, and surviving spouses can get VA loans. There is no down payment required, and there is no regular mortgage insurance. There is a one-time funding fee. Here is our VA loan calculator that will show you the real difference between how much that benefit is worth and how much the funding fee costs.

Mobile and Manufactured Home Loans: Genuinely Different

Most popular home calculator loans treat all mobile homes the same, so if you’re looking for a mobile home loan calculator, this is what you need to know.

If you own the land the house is on and the house is permanently attached to a foundation, it may be possible to get a normal mortgage, using the same rules and formulas that are used on this page. But if the house is in a mobile home park or on leased land, it’s usually paid for with a chattel loan, which treats the house like personal property instead of real estate. The terms of chattel loans are usually shorter, and the interest rates are usually much higher than those on regular mortgages.

The same $120,000 mobile home can be financed in two different ways, as shown below:

From a mortgage point of view (land owned, home attached, 10% down, $108,000 financed, 6.5% over 30 years): $683 a month, or $137,900 in interest over the term.

As a chattel loan (lease land, $108,000 financed, 9.5% over a shorter 20-year term): $1,007 a month, or about $133,700 in interest.

The monthly payment for the property loan is almost 50% higher, even though it will be paid off in 10 years instead of 20, and the total interest cost is almost the same as the mortgage’s, even though the term is much shorter, because the interest rate is higher. This is the real cost of financing as personal property instead of real estate, and it’s why the question of who owns the land is more important than most buyers think. Program availability and terms depend on the lender and the location, so talk to lenders who work with manufactured homes to get the full story before assuming either case applies to you.

Closing Costs to Budget For

Closing costs are extra cash costs on top of your down payment, and many first-time buyers don’t think they’ll be as high as they are. Usually, they include lender origination fees, the assessment, title and settlement services, prepaid property taxes and insurance, and the money put into the escrow account for the first time.

According to surveys of typical closing costs, the total costs of closing usually range from about 2% to 5% of the purchase price. However, this can be different depending on the lender, location, and type of loan (source: general industry closing cost estimates, compiled August 2026; confirm exact figures with your lender’s loan estimate). That amount adds up to about $8,100 to $20,250 on top of the down payment on our $405,000 example home. Budgeting for both the down payment and this range of closing costs, instead of just the down payment, keeps first-time buyers from having to rush around at the last minute.

Conclusion

Being able to afford the home loan calculator is more important than the amount you pay each month, and the total amount you pay doesn’t include taxes and insurance until the loan is fully paid off. Before you go house hunting, do your own math on all three questions. Also, make sure you have extra money set aside for closing costs on top of your down payment, as this is where most first-time buyers get caught off guard. Whether you’re thinking about a conventional buy, an FHA or VA loan, or a manufactured home on leased land, you need to know what your budget is, how much the full payment will be, and what the lender will agree to.

FAQs

Q1. How much home loan can I afford?

Using the two-ratio method on a home loan approval calculator (home loan calculator), a family making $9,000 a month and having $500 in debt would have a housing ratio of 28%, which means their monthly payment would be no more than $2,520. This is enough to cover a loan of about $324,000 and a purchase price of about $405,000 with a 20% down payment. The numbers you see will be different for you because of your income, bills, and down payment.

Q2. What’s included in a monthly mortgage payment?

The base payment is the principal and interest, but the full payment, which is often called PITI, also includes property tax, renters insurance, mortgage insurance if your down payment is less than 20%, and HOA fees, if they apply. In our case, the full amount was about 25% more than just the principal and interest.

Q3. How much down payment do I need?

Putting down less than 20% usually means you have to pay PMI, but it depends on the loan program. The minimum down payment for a standard loan is usually around 5%. Our comparison table showed that a 20% down payment got rid of PMI completely, which was the biggest monthly savings jump of all the down payment amounts we looked at.

Q4. What credit score do I need for a home loan?

The requirements depend on the type of loan and the lender. For conventional loans, you need to have better credit than for government-backed programs like FHA, which can work with lower scores as long as you make a bigger down payment. Different lenders and loan programs have different minimums, so you should check with them to find out what they are right now.

Q5. Can I get a loan for a mobile or manufactured home?

Yes, but how you pay for it will depend on whether you own the land or not. You might be able to get a regular mortgage for your home if you own the land and the house is permanently attached to it. If the house is on leased land, it’s usually paid for with a chattel loan, which has a shorter term and a higher rate, as you can see in the comparison above.

Q6. What’s the difference between prequalification and preapproval?

Prequalification is a quick estimate that is mostly based on self-reporting and not much proof. A lender verifies your income, assets, and credit to give you preapproval. They usually send you a letter that buyers really take seriously because it shows real underwriting and not just an estimate.