# How Much House Can I Afford? The New Math for 2026 Buyers

By Michael Martin (@michaelmartin) · Published 2026-10-29

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Searches for "how much house can I afford" have jumped **3,650%** on Google over the last year, and it's easy to see why: mortgage rates, home prices, and rent have all moved so fast that the old rules of thumb stopped making sense. The blunt answer is that what you can afford is driven less by a sticker price than by **three numbers your lender actually checks** — your debt-to-income ratio, your down payment, and your total monthly housing cost including taxes, insurance, and mortgage insurance. Get those three right and you'll know your real budget before you ever tour a home.

As a branch manager with 25 years in mortgage lending, I've watched too many buyers fall in love with a house their calculator said they could handle, only to discover the payment the lender approved was built on numbers the online tools left out. This guide gives you the same math I walk every Raleigh client through — the framework that separates what a bank will approve from what you can actually live with.

#### Key Takeaways

-   Your lender uses two debt-to-income ratios — a front-end ratio (housing only) and a back-end ratio (all debts) — to size your loan.
-   Your monthly payment is more than principal and interest: taxes, insurance, and mortgage insurance all count.
-   Putting less than 20% down usually means paying mortgage insurance, which shrinks what you can truly afford.
-   Online calculators miss these hidden costs, so your "real" budget is often 10–20% lower than the sticker number.

## What does the 28/36 rule actually tell you?

Lenders size most loans around two debt-to-income ratios, and understanding them is the single most important step in this whole process. The front-end ratio caps your housing payment at about **28% of your gross monthly income**, while the back-end ratio caps **all** your monthly debts — housing plus auto loans, student loans, credit cards, and child support — at about **36%**. Qualifying is not automatic: the two numbers work together, and most lenders look at both.

Here is the same example I run with buyers — and the one that matches a realistic Raleigh household. A couple earning **$175,000 a year gross** ($14,583 a month) and carrying $700 in monthly car and student-loan payments runs the numbers like this:

What lenders check

The ratio

What it allows you to spend

Front-end (housing only)

28% of gross income

About $4,083 a month for mortgage, taxes, insurance

Back-end (all debts)

36% of gross income

About $5,250 total, leaving $4,550 for housing after your $700 in other debts

The back-end number is almost always the one that binds, because it counts every debt you carry. The [Consumer Financial Protection Bureau](https://www.consumerfinance.gov/owning-a-home/prepare/figure-out-how-much-you-want-to-spend) lists your monthly debts — auto and student loans, credit cards, and more — as one of the five key factors that decide how much house you can afford, precisely because they eat into the payment you can carry. Pay down a car loan and your housing budget rises even though your income never changed.

![Home affordability calculator showing a monthly payment breakdown across principal, interest, taxes, and insurance](https://convex.voce.com/api/storage/afb02d0f-669f-48b5-922a-705305dae4c1)

That 28% and 36% are guideposts, not a hard ceiling for every borrower. As the CFPB explains, the amount you can afford ultimately depends on five key factors — your monthly income, your down payment, the loan type, the interest rate and terms, and property costs like taxes, insurance, and HOA fees. A well-qualified buyer with a strong credit profile can sometimes push past the classic ratios, and a conventional loan can allow a higher back-end ratio with compensating factors. The math above is your safe starting point, not the absolute limit.

## What the monthly payment really includes

The biggest mistake buyers make is comparing a mortgage payment to what they pay in rent. Your **total monthly home payment** is more than principal and interest — it bundles property taxes, homeowner's insurance, mortgage insurance, and sometimes homeowners' association fees, and many lenders require these taxes and insurance costs to be paid through an escrow account set up at closing. The CFPB lays this out plainly: your total payment includes mortgage principal, interest, property taxes, mortgage insurance, homeowner's insurance, supplementary insurance like flood coverage, and HOA fees.

On a typical North Carolina home, property taxes and insurance can add **$400 to $700 a month** on top of the loan payment, and that money counts against your 28% ratio just like principal does. The affordability calculators that only show principal and interest will tell you the payment is manageable, then the real escrowed payment comes in well above what you budgeted.

The same logic applies to costs you don't pay through the mortgage at all. The CFPB reminds buyers that maintenance, repairs, and utilities such as electricity, gas, internet, water, and sewer "can be significant" and vary widely by climate, home size, and energy efficiency. A $2,200 payment with $500 a month in upkeep and utilities is a very different financial picture than a $2,200 payment with none.

## How your down payment changes what you can afford

Your down payment does two jobs: it lowers the amount you borrow, and it can remove the monthly cost of mortgage insurance. If you put down less than **20%** of the home price, the CFPB notes you will likely need to pay mortgage insurance, which adds to your monthly costs — and you may need to reduce your target home price to absorb it. That insurance is a recurring charge, not a one-time fee, and it can persist for years depending on the loan type.

Here is the practical effect. On a $350,000 home with 20% down, you finance $280,000 and carry no mortgage insurance, so your payment is lower and more of every dollar goes to principal. With a 3.5% FHA down payment of roughly $12,250, you finance about $337,750, carry mortgage insurance for the life of the loan in most cases, and your effective payment — and your monthly budget — climbs accordingly. As the CFPB explains, FHA loans require as little as 3.5% down with flexible credit requirements, while conventional loans backed by Fannie Mae or Freddie Mac can require as little as 3%.

That does not mean bigger is always better. A low-down-payment loan can get you into a home years sooner, and the CFPB points to down payment assistance programs through state or local governments and nonprofits that can bridge the gap. The right choice depends on whether you value a lower monthly payment or getting in sooner — and on keeping enough cash back for closing costs, which typically run **2% to 5%** of the purchase price according to the CFPB.

## What a typical Raleigh mortgage looks like

Here is where the national math meets your local market. The September 2026 median sale price for a Raleigh home was **$425,000**, down 4.8% from a year earlier, per the [Doorify MLS report](https://homesraleigh.com/blog/raleigh-housing-market-2026-trends-home-prices-market-insights), while [Zillow's Raleigh index](https://www.zillow.com/home-values/54047/raleigh-nc) put the average home value at $424,663. Prices are flatter and inventory is up, but the 28% and 36% ratios still get tested hard because property taxes and insurance in Wake County have risen alongside values.

Add principal and interest near **$2,530 a month** to that $224 in taxes and $208 in insurance, and the total housing payment lands near **$2,960 a month**. Against the $175,000 annual income from the table above — $14,583 a month gross — that is about **20% of gross income**, well under the 28% front-end ceiling and comfortably inside the $4,550 housing budget the back-end ratio allows. That is the difference between a calculator quoting $208,000 and the full bank-level math approving a $500,000 home.

The escrow part is substantial, and it is where calculators go wrong. Wake County's FY2027 property tax rate is **53.71 cents per $100** of assessed value ([Wake County budget](https://www.wake.gov/news/wake-county-commissioners-adopt-228-billion-fiscal-year-2027-budget)). On the insurance side, [Policygenius](https://www.policygenius.com/homeowners-insurance/north-carolina/raleigh) lists the cheapest Raleigh rates at roughly **$664 to $991 a year** — State Farm at about $664 and Allstate at about $991. On a $500,000 home, those two escrow items add hundreds of dollars a month on top of principal and interest — money that counts against your 28% ceiling.

## How to get a number you can actually trust

The fastest way to stop guessing is to run the math backward. Start from your **monthly payment budget** — what you can comfortably pay each month for housing after your other debts and savings goals — then use that number to find the home price, rather than starting from a price and hoping the payment fits. That is the approach the CFPB's own budget calculator and Freddie Mac's free Homebuying Budget Calculator are built around, and it flips the process in your favor.

Here is the way to run the numbers so they match what a lender will tell you. Take your gross monthly income and apply the two ratios from earlier — the front-end ceiling for housing alone and the back-end ceiling for all your debts combined — then subtract every non-housing monthly payment you carry. That remainder is your true housing budget. Then subtract your real escrow (taxes plus insurance) and mortgage insurance if you're under 20% down, and what is left is the principal-and-interest payment your loan can support. The [Consumer Financial Protection Bureau](https://www.consumerfinance.gov/owning-a-home/prepare/figure-out-how-much-you-want-to-spend) lists your monthly debts among the five factors that decide how much house you can afford, because every dollar of other debt shrinks the payment you can carry.

Three steps close the loop. First, add up every monthly debt you carry so you know your true back-end ratio. Second, put together your full payment — principal, interest, taxes, insurance, and mortgage insurance if you're under 20% down — and give yourself a cushion because, as the CFPB warns, none of these numbers is precise and costs like taxes and insurance rise over time. Third, bring that full picture to a lender who will tell you what you qualify for and, just as important, what leaves you room to live.

?Frequently Asked Questions3 questions

1Is 28% the absolute maximum a lender will approve?

Not necessarily. 28% and 36% are conventional guideposts, and lenders can approve higher back-end ratios with compensating factors like a strong credit score, a larger down payment, or significant cash reserves. The CFPB lists your credit profile and the loan type as factors that shape your rate and approval, so a well-qualified borrower has room.

2Do I have to put 20% down to buy a home?

No. You generally need to pay mortgage insurance when your down payment is under 20% of the purchase price, but many programs make buying possible with far less. FHA loans allow as little as 3.5% down with flexible credit, and some conventional loans allow 3% — plus state and local down payment assistance programs can help bridge the gap.

3Why do online affordability calculators give a higher number than my lender?

Online calculators typically show only principal and interest, leaving out property taxes, homeowner's insurance, and mortgage insurance that lenders require — often paid through an escrow account. Those escrowed costs can add hundreds of dollars a month and count against your debt-to-income ratio, which is why your real budget is often lower than the calculator suggests.