Basic Calculation
Net Profit (from P&L) ÷ Months = Monthly Qualifying Income For a 12-month P&L:
The lender uses $27,000 as the monthly income figure for DTI calculations.
12-Month vs 24-Month P&Ls
Some programs accept a 12-month P&L; others require 24 months. When two years are required, the lender typically averages the net profit across both years. If income has increased significantly in the most recent year, a 12-month P&L may be more favorable. If income declined, a 24-month average may soften the impact.Non-Cash Add-Backs
Certain non-cash expenses can sometimes be added back to net profit to increase qualifying income. The most common is depreciation—a real accounting expense that doesn’t represent actual cash leaving the business. Example with depreciation add-back:
Not all lenders allow add-backs, and the specific items eligible vary by program. Ask upfront whether your lender applies add-back treatment.

