Mortgage Basics · 6 min read

Debt-to-Income Strategy: Which Debts to Pay Off First When Buying a Home

Originally published September 22, 2026 · Dominic Kramer, NMLS #1946539

When qualifying for a mortgage, your monthly liabilities matter more than your total debt balance. Learn how to strategically pay off the right debts to boost your borrowing power.

Dominic Kramer, mortgage loan officer in Bothell, Washington, on a client call at his desk
Dominic Kramer, NMLS #1946539, Bothell, Washington

If you are looking to buy a home right now, you might think the sticker price is the only thing that stands between you and your next set of keys. But in a normalizing market where sellers are actually open to negotiating, your monthly liabilities are often the real gatekeeper. Your debt-to-income ratio is the mathematical relationship between your gross monthly income and your minimum monthly debt obligations, and it dictates exactly what a lender will let you borrow.

Managing this requires a solid grasp of how underwriters view your balance sheet. To build a solid foundation, you can explore the mortgage basics hub to see how lenders calculate your qualifying income and structure your application. Understanding which debts to wipe out first can instantly increase your purchasing power without requiring a massive raise or a giant inheritance.

Why the Minimum Payment Rules Your Buying Power

Mortgage underwriters do not look at your total outstanding debt balance when they calculate your debt-to-income ratio. Instead, they look at the minimum monthly payment required for each debt on your credit report. A ten-thousand dollar student loan with a zero-dollar income-driven repayment plan has zero impact on your front-end qualification. Conversely, a small five-thousand dollar credit card balance with a two-hundred-fifty dollar minimum monthly payment eats up a massive chunk of your borrowing capacity.

This is where strategic debt reduction comes into play. If you have ten thousand dollars in cash, throwing it at a low-interest car loan with a low monthly payment might feel productive, but it does very little for your mortgage qualification. You want to target the debts with the highest payment-to-balance ratio first. Financial literacy and understanding how these numbers interact on an application can save you thousands of dollars in the long run [2].

To see how these numbers translate into a monthly mortgage payment, you can use our home affordability calculator and change the monthly debt inputs to see how your maximum home price changes in real time. Clearing a single credit card payment can sometimes open up an extra fifty thousand dollars in purchasing power, depending on your target program.

The Strategic Debt Payoff Checklist

Before you start transferring funds or closing accounts, you need a plan that protects both your cash reserves and your credit score. Many buyers make the mistake of draining their savings to become completely debt-free, only to realize they no longer have the cash required for a down payment or closing costs. You must balance your liquid cash with your debt-to-income targets.

Here is the exact order of operations I recommend when preparing your debts for a mortgage application:

National trends show that credit management is the key differentiator for successful buyers, as highlighted in the latest mortgage lending industry reports [6]. When comparing lenders, ask how their compensation is structured. My compensation generally ranges from one to two percent of the loan amount, which is standard across the industry, but you should always ask any loan officer you interview for a breakdown of their fee structure on a written Loan Estimate.

  • Target credit cards with balances hovering near their limits first, as lowering your credit utilization ratio will quickly boost your credit score.
  • Pay off installment loans with ten or fewer payments remaining, because underwriters can often exclude these payments from your debt-to-income ratio entirely.
  • Avoid paying off collection accounts or old medical bills without talking to a professional, as triggering activity on an old dormant account can sometimes temporarily drop your score.
  • Keep your credit cards active with a zero or low balance instead of closing them, which preserves your credit history and overall credit limit.
  • Do not open any new credit lines, buy furniture on finance, or co-sign for anyone else's loan once you begin the home-buying process.

How Blaine's Market Dynamics Shape Your Options

Buying a home up in Blaine, Washington comes with its own unique set of financial considerations. Because we are right on the Canadian border, the property mix here ranges from historic craftsman homes near downtown to waterfront condos in Semiahmoo and rural properties out toward Custer. If you are looking at homes in Whatcom County, you have to account for local property tax structures, active homeowner association fees, and the cost of maintaining septic or well systems on larger lots.

These local expenses get added directly to your housing expense ratio, which means your personal debts have to be even lower to fit within standard underwriting limits. Semiahmoo condos, for example, often come with substantial monthly association dues that act exactly like a car payment on your application. If your debt profile is already tight, those association fees can easily push your total debt-to-income ratio past the acceptable limit for a standard conventional loan.

When local property taxes or association fees squeeze your monthly budget, you need to look at flexible financing options. Using adjustable rate mortgages can provide a lower starting interest rate and payment during the initial fixed period, helping you qualify for more home in Whatcom County while you work on clearing your remaining short-term debts.

Debts You Should Leave Alone

Not all debt is bad debt when you are trying to get approved for a home. Some loans actually help stabilize your credit profile, and paying them off right before you apply can cause more harm than good. A prime example is a low-interest student loan with a consistent, long-term payment history. If the payment is manageable, keeping that trade line active shows underwriters that you can handle long-term installment accounts.

You should also think twice before paying off a vehicle lease. Unlike a standard car loan, a lease payment can almost never be excluded from your debt-to-income ratio, even if you only have a few months left on the agreement, because the bank assumes you will lease another car when this one expires. Draining five thousand dollars in cash to pay off the remaining months of a lease does not lower your liabilities in the eyes of an underwriter.

Keep in mind that every dollar of cash you spend paying down low-interest debt is a dollar you cannot use for your down payment or reserves. If a lender requires you to have three to six months of mortgage payments left in your bank account after closing, keeping that cash liquid is far more important than wiping out a low-interest debt that only costs you thirty dollars a month. When looking at Washington loan limits or local program requirements, remember that guidelines can change annually, so you should always confirm the current limits with a professional.

Questions I get about this

Can I pay off a debt during the loan process to qualify for a higher amount?

Yes, you can pay off debts during the underwriting process, but you must do it under your loan officer's direct supervision. You cannot just pay it online and hope we notice; the underwriter will require documented proof of the payment, an updated statement showing a zero balance, and a credit supplement to officially update your credit report before clear to close.

Will my student loans prevent me from getting a mortgage if they are in deferment?

No, deferred student loans will not automatically disqualify you, but underwriters cannot count them as a zero-dollar payment. If your student loans are deferred, the lender must use either a percentage of the total balance, typically one-half or one percent depending on the loan program, or the actual payment listed on your credit report to calculate your monthly liabilities.

Dom's take

Structuring complex files has actually become much easier this month because we are finally out of the manic bidding wars that forced buyers to skip inspections and wave contingencies. This is the market I like coaching people through. Nobody is panicking, we have time to structure the loan properly, and the monthly payment is something we build on purpose instead of accept. We can look at your balance sheet as a whole, identify the exact debts holding you back, and use seller concessions to buy down your rate or clear out credit lines.

It used to drive me crazy when we had to rush through pre-approvals in thirty minutes just so a client could submit a blind offer on a Friday night. Now, we can sit down, map out your debt paydown strategy over a few weeks, and target properties in Whatcom County with a clear plan. That means you get to decide whether paying off a credit card or choosing a specific financing structure makes the most sense for your family's budget before you ever sign a purchase contract.

How I'd handle it

If I were buying a home in this environment, I would preserve as much liquid cash as possible and only pay off debts that directly open up a lower tier of interest rates or a necessary debt-to-income threshold. I would have my loan officer run a side-by-side analysis of my credit report to see exactly how my score and borrowing capacity respond to different payoff scenarios before parting with a single dollar of savings.

Talk it through with me

When you are ready to see how your current debt profile affects your borrowing options, send me your scenario to start the conversation. We can run a soft-credit check that does not affect your score, complete a preliminary pre-approval in about five minutes, and get you ready to close on your new home in fifteen days or less.

Topicsdebt-to-incomemortgage-basicshome-buyingcredit-scorewhatcom-county

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