How Much House You Can Actually Afford This Year

A couple I underwrote a loan for years ago qualified for four hundred and twenty thousand dollars. They bought a house for three hundred and forty thousand instead, and told me afterward it was the best financial decision of their marriage. The lender's number told them what they could technically repay without defaulting. It said nothing about what they could repay while still saving for retirement, taking a vacation most years, and not feeling their stomach drop every time the HVAC made a strange noise.

The gap between what a lender approves and what a household can comfortably absorb is the single most consequential number in home buying, and almost nobody calculates it correctly on the first try, because the lender's number is easy to get and the comfortable number requires actually looking at your own spending.

Why the pre-approval ceiling is not a target

Lenders calculate a maximum loan amount using debt to income ratios, generally allowing total housing costs plus other debt payments to reach somewhere between forty three and fifty percent of gross monthly income depending on the loan program. That ratio is built around default risk, not lifestyle comfort, and it does not know whether you are also paying for daycare, supporting a parent, or planning to change careers next year. Two households with identical income and identical pre-approval amounts can have completely different amounts of money actually available after their real obligations, and the pre-approval letter cannot see the difference.

Treat the pre-approval number as the outer boundary of the search, useful for filtering listings, not as a target to aim for. The house at the top of your pre-approval range should feel like a stretch you are choosing deliberately, not a default outcome of house hunting near your limit because that is what appeared in your search filters.

Building the real number from your actual bank statements

The more reliable approach starts from your last six months of bank statements rather than from your income. Add up actual discretionary spending, savings contributions, and irregular costs like car maintenance or medical copays that do not show up in a monthly budget spreadsheet but do show up in real life. Subtract that total, plus a buffer for the expenses that come with owning rather than renting, from your take home pay, and what remains is the actual number available for a mortgage payment including taxes and insurance.

This number is almost always lower than the lender's approved amount, sometimes by a wide margin, and the gap tends to be largest for households with variable expenses like childcare or health costs that a standard debt to income calculation does not weight heavily.

Property taxes and insurance are the part buyers underestimate most

First time buyers frequently budget around the principal and interest portion of a mortgage payment and treat taxes and insurance as a minor add on, when in many markets they add several hundred dollars a month and can rise substantially after a sale, since many jurisdictions reassess property value at the sale price rather than carrying forward the previous owner's lower assessment. A house that looks affordable based on the current owner's tax bill can carry a materially higher bill for the new owner in year one, and homeowners insurance in areas with rising climate risk has been increasing well ahead of general inflation in many regions.

Ask your lender for an estimate based on the reassessed value at your purchase price, not the seller's current tax bill, before finalizing what payment you are actually budgeting for.

The counterintuitive case for buying below your approval

Buying below the top of your pre-approval range feels, to many buyers, like leaving money on the table or settling for less house than they earned. The households who report the most satisfaction two years into ownership consistently describe the opposite experience: a payment low enough that a job change, a slow month of freelance income, or an unexpected repair does not create genuine financial stress. That margin is worth more than an extra bedroom or a nicer countertop, even though it is much harder to see on a listing photo.

Moving costs and the first repair bill nobody plans for

Buyers who calculate affordability down to the exact monthly payment often forget that the purchase itself has a real cash cost outside of the down payment: movers, new furniture to fill rooms an apartment never had, a first lawnmower, and inevitably a repair in the first six months that a home inspection did not catch because it was not yet a problem at the time of inspection. Setting aside an additional two to three percent of the purchase price as a landing fund, separate from the down payment and separate from any remaining emergency savings, prevents these early costs from turning into credit card debt during the exact months a new homeowner is least prepared to absorb it.

This fund matters more for first time buyers moving from a rental, where many of these costs simply did not exist before, than for repeat buyers who already own furniture, tools, and an established sense of what a home actually costs to run month to month.

Adjusting the number if your income is not perfectly stable

Commission based income, seasonal work, and self employment all get treated cautiously by lenders, who typically average two years of tax returns rather than counting a strong recent year at face value. Buyers in these situations should run their own affordability number using the weaker of their last two years, not the stronger one, since a payment that only works in a good year is a payment that creates real stress the first time a slow year arrives. This is a more conservative approach than the lender's own averaging method in some cases, and it is worth being more conservative than the lender when your income has already shown real variability in the past.

Read our Mortgages and Financing section for more on how lenders actually calculate approval amounts, and our notes on what to expect once you are under contract and budgeting for the repairs that follow. The right number is not the biggest one you qualify for. It is the one that still lets you sleep after a bad month.