Sales- or production-based earnings reviewed through history, trend, and averaging for mortgage qualification.
Commission income is compensation tied to sales, transactions, production, or another measurable result. Because the amount often fluctuates, a mortgage lender typically reviews its history and trend before deciding how much can support qualification.
Commission may be the borrower’s entire pay or an addition to salary. The distinction matters because the lender should identify base earnings separately rather than let one strong commission period inflate regular income.
Commission earners can have high annual income and uneven monthly cash flow. A record-setting quarter may be followed by a slower period, and commissions can be delayed by cancellations, closing schedules, or employer rules. Underwriting therefore seeks a representative monthly figure rather than the latest check.
The accepted amount enters Qualifying Income and affects DTI. A lender may average commission over a documented period, use a lower stabilized amount when earnings are declining, or exclude the income if the history is too short or the trend is not supportable.
Mortgage programs differ. A frequently quoted history rule may describe one agency or underwriting method rather than every mortgage available.
Commission is identified during preapproval from the application, paystubs, and W-2s. Formal underwriting may require an earnings breakdown and employment verification showing year-to-date and prior-year commission.
The lender may examine:
A new job in the same field does not automatically preserve the old commission average. The lender needs to understand whether the new compensation opportunity is reasonably comparable.
| Pattern | Main underwriting question |
|---|---|
| Stable annual totals | Does the average accurately represent current earning capacity? |
| Increasing totals | Is the growth recurring or caused by an unusual transaction? |
| Decreasing totals | Has income stabilized at a lower level, or is the decline continuing? |
| New commission plan | Is there enough history under the new structure? |
| Salary plus commission | Are fixed base pay and fluctuating commission separated correctly? |
The lender should also identify the pay period. Quarterly commission divided by three is not the same as an annual award divided by 12 when the earnings history covers different periods.
Marcus earns a $4,000 monthly salary plus commission. His commission was $24,000 in the prior year and $15,000 during the first six months of the current year. A simple 18-month average is about $2,167 per month.
The current annualized pace is $30,000, but the lender does not automatically use $2,500 per month. It confirms that Marcus has not received one unusually large, non-recurring payment and checks that his sales role and compensation plan remain in place. The supportable commission figure is then added to the base salary for qualification.
If current commission had fallen sharply instead, the lender might use a lower recent amount or decline to count it until the earnings stabilized.
Bank deposits alone usually do not explain whether a payment is salary, commission, reimbursement, or something else.