Income Verification and Rental Income Calculations

For existing rental properties, lenders use 75% of gross rental income (reducing by 25% to account for vacancy and maintenance) as documented by lease agreements and Schedule E of the tax return. If Schedule E shows a net rental loss, that loss is added to the borrower's monthly obligations, increasing DTI. For the subject property being acquired, lenders use 75% of the appraiser's estimate of market rent from the 1007 rent schedule. The treatment of rental income as qualifying income versus simply an offset to the mortgage payment varies by program and can significantly affect the borrower's qualifying capacity.

Many real estate investors are self-employed, adding complexity to income documentation. Lenders require two years of personal and business tax returns and calculate qualifying income as the two-year average of net income after adding back allowable deductions (depreciation, depletion, non-recurring losses). If income has declined more than 20% year-over-year, many lenders will use only the lower year or deny the application. Bank statement loan programs—a form of non-QM lending—offer an alternative, qualifying borrowers based on 12-24 months of business bank deposits with a 50% expense factor applied.

Consider an investor with W-2 income of $85,000 and two rental properties. Property A generates $1,500/month rent with a $1,200 PITI payment. Property B generates $2,000/month rent with a $1,500 PITI payment. Using the conventional 75% rental income offset method: Property A net = (1,500 × 0.75) − 1,200 = −$75/month. Property B net = (2,000 × 0.75) − 1,500 = $0/month. The $75 monthly loss from Property A adds to the DTI denominator. Total qualifying monthly income = $85,000/12 = $7,083. Additional monthly obligations from rentals = $75. This investor's rental portfolio is nearly break-even from an underwriting perspective.