Qualifying & Underwriting · 5 min read

Counting Overtime, Bonus, and Commission Income: How Mortgage Underwriters Verify Your Pay

Originally published October 4, 2026 · Dominic Kramer, NMLS #1946539

Variable compensation can expand your mortgage options, but only if you know how underwriters calculate it. Learn the rules for bonus, overtime, and commission income, especially in high-value markets like King County.

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

Variable compensation like bonuses, overtime, and commissions can significantly expand your buying power, but only if an underwriter is allowed to count it. If you earn a base salary of $100,000 but bring home another $50,000 in annual bonuses, you might expect lenders to treat you as a $150,000 earner. The reality is that mortgage guidelines view any income that is not a guaranteed salary with a healthy dose of skepticism.

Underwriting guidelines exist to verify stability, which is why they look for a clear history of these payments. We are in a normalizing market where buyers are focusing heavily on qualifying for a mortgage to get their payments exactly where they want them. Understanding how your variable compensation is calculated can make the difference between securing your dream home or missing out entirely.

Why the Two-Year Rule Rules Underwriting

The standard baseline for any variable pay is a solid two-year history with the same employer or at least in the same line of work. Underwriters want to see that your overtime hours or commission checks are not a temporary spike. If you just started a new job with a heavy commission structure six months ago, most conventional guidelines will not let us use that commission at all, forcing us to qualify you solely on your base salary.

It is not about doubting your work ethic or your company's health. The mortgage system wants to ensure that if you take on a large monthly payment, you have a proven track record of bringing in that extra cash. Underwriters look at your past two years of W-2s and your most recent year-to-date paystubs to establish a clear mathematical average.

The Specifics of Sammamish and King County Realities

In high-value enclaves like Sammamish, where many residents work in the tech corridors of Redmond and Bellevue, total compensation is rarely just a simple hourly wage. A huge portion of local household income in King County comes from performance bonuses, annual stock grants, and corporate overtime. When you are buying a home near Beaver Lake or Pine Lake, where property taxes and HOA dues can run high, every dollar of qualifying income matters.

Because local housing inventory has surged, according to Seattle area housing reports, buyers in western Washington have more leverage to negotiate. This makes structuring your financing correctly even more critical. If you are planning a rate and term refinance on a Sammamish home you bought when rates spiked, proving your bonus history is the key to lowering your debt-to-income ratio and securing the best possible terms.

The Math Behind Declining vs. Increasing Income

Underwriters do not just look at the raw average; they look at the trend line. If your commission income was $30,000 two years ago and $40,000 last year, we can typically average those two figures to show $35,000 in qualifying annual income. However, if your commission went from $40,000 down to $30,000, the underwriter will either use the lower, more recent figure or, in some cases, discount the variable income entirely. You can use this tool to test how different household income levels affect your budget by adjusting the annual income and monthly debt inputs to see your maximum monthly payment.

This trend analysis is designed to prevent borrowers from overextending. If the market cools or your industry experiences a pullback, your variable pay is often the first thing to shrink. Lenders want to be certain that your baseline finances can support the mortgage if your overtime hours dry up completely.

What an Underwriter Needs to See

When an underwriter conditions your file for extra documentation, they are simply building the legal paper trail required to sell the loan or back it up in an audit. It is a checklist of verification, not a personal doubt about your finances. They are comparing your paystubs to your W-2s to ensure the year-to-date earnings align with your historical averages.

To make sure your variable income counts toward your qualification, you need to gather specific documents. Having these ready before you submit an application will keep your file moving quickly:

  • Your W-2 forms from the last two consecutive calendar years to establish your earnings baseline.
  • Your most recent 30 days of consecutive paystubs showing a clear breakdown of base, overtime, bonus, and commission rates.
  • A completed written verification of employment from your employer confirming your variable income is likely to continue for at least three years.
  • Your personal federal tax returns if your commission income accounts for more than 25 percent of your total qualifying earnings.
  • Your corporate offer letter or compensation plan detail if you recently transitioned roles but stayed in the same field.

Questions I get about this

Can I count my overtime if I have only been at my job for 18 months?

Generally, conventional guidelines prefer a full 24-month history of overtime. However, if you have been with the same employer for at least 12 to 18 months and your employer can document that the overtime is highly stable and expected to continue, some underwriting departments may accept it. It helps if you worked in a similar role with overtime pay at your previous company, allowing us to build a continuous two-year narrative.

What happens if my bonus fluctuates wildly from year to year?

If your bonuses are highly volatile, the underwriter will look for the conservative route. For instance, if you received a $50,000 bonus two years ago and a $10,000 bonus last year, they will likely use the $10,000 figure or require a strong explanation from your employer as to why the payout dropped. Consistency is the primary goal, so a wild downward swing will always drag down your qualifying average.

Dom's take

I was surprised by how many buyers in King County were caught off guard this autumn when underwriters dug into their quarterly bonus structures. Many assumed that because their tech stocks or corporate bonuses were high, the mortgage process would be a breeze. But as inventory has shifted and the local market has balanced out, we are seeing underwriters look closer at the actual stability of those compensation packages.

This is exactly the kind of environment where I enjoy helping families plan. Nobody is panicking anymore, we have the breathing room to structure your loan correctly, and we can design a monthly payment plan on purpose rather than just accepting whatever rate sheet is thrown at us. Getting your bonus and commission income documented early lets us negotiate with more strength when dealing with sellers who are finally willing to make concessions.

How I'd handle it

If I were using variable income to buy or refinance my own home today, I would not guess at the numbers. I would have my loan officer run a full verification of employment before I ever wrote an offer on a house. Knowing exactly how much of your commission or overtime the underwriter will count gives you the confidence to negotiate hard on price, terms, and seller credits without worrying about a sudden loan denial.

Talk it through with me

If you want to see how your bonus, commission, or overtime income will be calculated, contact me directly to map out your scenario. I can get you through a five-minute pre-approval call to review your pay structure, and once we find the right strategy, we can target an average mortgage closing time of 15 days or less.

TopicsQualifyingUnderwritingIncome VerificationRefinance

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