A year-end bonus can meaningfully increase your purchasing power, but lenders apply strict rules before counting that income. Understanding how underwriters treat bonus payments helps you set realistic expectations before you apply.
The two-year history requirement
Most underwriting guidelines require a documented two-year history of receiving bonuses before the income can be used for qualification. If you received a $15,000 bonus last year and $12,000 the year before, the underwriter calculates a 24-month average—in this case, $13,500 annually or roughly $1,125 per month. That average gets added to your base income when calculating debt-to-income ratios.
If you've only received bonuses for one year, most conventional and government-backed programs will not count that income at all. The requirement exists because underwriters need evidence the payment is recurring and likely to continue.
Consistency and declining trends
A stable or increasing pattern improves usability. If your bonuses were $10,000 two years ago and $14,000 last year, the trend supports continuation. If the pattern is $18,000 two years ago and $9,000 last year, the underwriter will either use the lower figure or exclude the income entirely, depending on the loan program and documentation you provide.
Volatility works against you. Bonuses of $20,000, then $5,000, then $18,000 signal unpredictability. Even with a strong average, an underwriter may discount or exclude income that swings widely year to year.
Documentation requirements
Expect to provide W-2 forms for the most recent two years, recent paystubs showing year-to-date bonus payments, and often a written verification of employment from your employer. That letter should confirm bonus structure, payment history, and the likelihood of continuation. The employer cannot guarantee future payments, but a statement that bonuses are part of standard compensation for your role carries weight.
Signing bonuses are generally excluded unless they recur annually under a written agreement. One-time payments do not establish continuity.
Guaranteed versus discretionary bonuses
Guaranteed bonuses—those written into an employment contract with a fixed schedule and amount—may be treated more like base salary, sometimes without the full two-year history requirement. Discretionary bonuses, where the employer retains full control over amount and timing, always require the historical averaging approach.
Commission income follows similar rules but often gets averaged over a longer period, depending on volatility.
The Alliance take
We walk through bonus income calculations during pre-qualification so you know exactly what the underwriter will count before you make an offer. If you're one year into a new role with strong bonus potential, waiting another year to apply often makes sense. If your bonus history is solid and well-documented, we'll structure your file to maximize what counts. Start an application and we'll review your specific income documentation during the initial consultation.