How Much House Can I Afford?

The most inevitable yet fair question to ask when the time comes to finally buy your first home. You may have a number already based on what you think you are comfortable spending, but when lenders give you the numbers, it won’t feel right because they look at things vastly different than you do because they make sure to make profit as much as possible.

However, lenders aren’t the only source of information on how to realistically know to give you a starting point. The simple 28/36 rule will give you a clear idea already of how much you can afford before you get to the lenders and start your house hunting.

 

The 28/36 Rule, Explained Simply

So what exactly is the 28/36 rule? In plain English, it's a guideline lenders use to figure out how much of your income should reasonably go toward housing and debt each month.

The 28% Housing Ceiling: This first number focuses purely on your housing bill, your combined principal, interest, taxes, and insurance. To keep things manageable, preferably this total to stay under 28% of gross monthly income.

The 36% Total Debt Limit: This broader look captures your housing payment alongside every other recurring obligation, from auto loans and student debt to those monthly credit card minimums. Generally, you want to ensure these combined costs don't stretch beyond 36% of your gross monthly pay.

Always remember that these calculations are from your GROSS MONTHLY income. Meaning, the 28% is already included in the 36%, and you are then left with 64%, which is still to be taxed.

 

Walking Through a Real Example

Let's say a household brings in $55,000 a year, which works out to about $4,583 a month before taxes. Using the 28% rule, that means their monthly housing payment (mortgage, property taxes, and insurance combined) should stay around $1,283 or less. Then, applying the 36% side of things, their total monthly debt, housing included, shouldn't go much past $1,650.

Now let's bump that up to an $85,000 household income, or roughly $7,083 a month. At 28%, their housing payment could stretch to about $1,983. And their total debt ceiling under the 36% rule would land around $2,550.

Here's how that breaks down side by side:

You can see how the gap between the two rules changes depending on income. That "room for other debt" column is a good thing to keep an eye on, because if you're already carrying a car payment or student loans, it directly affects how much house you can actually qualify for, even if your income alone looks like it could support a bigger payment.

 

What Counts as "Housing Costs" and "Debt"

Before you start crunching your own numbers, it helps to know exactly what lenders lump into each category. The terms can feel a little vague until you see them broken down.

Your housing costs, the ones covered under that 28% figure, are usually referred to as PITI. That stands for principal, interest, taxes, and insurance. Principal is the actual loan amount you're paying down, and interest is the cost of borrowing that money. Taxes means your property taxes, which get added into your monthly payment. Insurance covers your homeowners insurance, and sometimes private mortgage insurance too, if your down payment is under 20%. If the home is part of a homeowners association, your HOA dues typically get folded into this number as well.

Debt, on the other hand, is everything else you owe money on each month. This includes things like a car loan, student loan payments, minimum credit card payments, and personal loans. Basically, if it shows up on your credit report as a recurring monthly obligation, it's probably getting counted here.

One thing worth mentioning: property taxes and insurance rates aren't the same everywhere, they can vary quite a bit depending on where in Woodbury County you're looking to buy. A home in one neighborhood might carry a noticeably different tax bill than a similar home a few miles away. It's a good idea to check local rates for the specific area you're interested in, rather than assuming a flat percentage across the board.

 

What Counts as "Housing Costs" and "Debt"

Your housing costs, the ones covered under that 28% figure, are usually referred to as PITI. That stands for principal, interest, taxes, and insurance. Principal is the actual loan amount you're paying down, and interest is the cost of borrowing that money. Taxes means your property taxes, which get added into your monthly payment. Insurance covers your homeowners insurance and sometimes private mortgage insurance too, if your down payment is under 20%. If the home is part of a homeowners association, your HOA dues typically get folded into this number as well.

Debt, on the other hand, is everything else you owe money on each month. This includes things like a car loan, student loan payments, minimum credit card payments, and personal loans. Basically, if it shows up on your credit report as a recurring monthly obligation, and it's getting counted here.

One thing worth mentioning: property taxes and insurance rates aren't the same everywhere, they can vary quite a bit depending on where you're looking to buy. A home in one neighborhood might carry a noticeably different tax bill than a similar home a few miles away. It's a good idea to check local rates for the specific area you're interested in, rather than assuming a flat percentage across the board.

 

Other Factors That Affect Affordability

The 28/36 rule only gives you an idea of where to start; it is not and shouldn’t be your only basis whether you can afford the property or not.

Your down payment size makes a real difference. The more you put down upfront, the less you need to borrow, which lowers your monthly payment and can help you avoid private mortgage insurance altogether if you reach 20%. Even a smaller bump in your down payment can meaningfully change what fits inside that 28% housing cap.

Your credit score plays a bigger role than a lot of buyers realize. Lenders use it to help set your interest rate, and even a small difference in your rate can add up to a lot over the life of a 30-year loan. A higher score generally means a lower rate, which means more of your monthly payment goes toward the actual house instead of interest.

The type of loan you go with matters too. Conventional loans are common, but if you're buying in a more rural or edge-of-city area around Sioux City, you might also qualify for a USDA loan, which can offer no down payment options for eligible properties. FHA loans are another route, often appealing to buyers with lower credit scores or smaller down payments, though they do come with their own insurance requirements.

Local property tax rates are worth factoring in early, since they're baked directly into your monthly housing payment. Rates can vary, so a home that looks affordable on price alone might come with a noticeably higher or lower tax bill depending on where it sits.

And finally, home prices themselves aren't uniform across Sioux City. Different neighborhoods carry different price points, so your budget might stretch further in one part of town than another. It's worth exploring a few areas before settling on a target price range, since your 28/36 numbers might comfortably fit a wider variety of neighborhoods than you'd expect.

 

Why the "Max" Number Isn't Always the Right Number

Here's something a lot of first-time buyers don't realize until they're already in the process: the number a lender approves you for and the number that actually feels comfortable to pay every month aren't always the same thing.

Lenders calculate your maximum approval based on debt ratios, plain math involving your income, existing debts, and credit profile. What they don't factor in is your lifestyle. They don't know if you like to travel, how much you spend on groceries, whether you're saving for retirement, or if you've got a car repair fund set aside for emergencies. Your approval amount is really just a ceiling, not a recommendation.

That's why it's worth thinking about your budget beyond what you technically qualify for. Just because you're approved for a $1,900 monthly payment doesn't mean you have to stretch to that number. Buying a little below your max gives you breathing room for unexpected expenses, for saving goals, or just for peace of mind knowing your mortgage isn't eating up every spare dollar.

A helpful approach is to sit down and look at your actual monthly spending before you go house hunting, not just what the lender says you can afford. That way, when you find a home you love, you're choosing a payment that fits your life, not just one that fits a formula.

 

 

 

 

 

 

 

 

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