What This Guide Covers
- How underwriters calculate net rental income from Schedule E
- The 75% vacancy factor and why it exists
- When you can use projected rental income on a property you have not yet purchased
- How rental losses on existing properties reduce your total qualifying income
How Underwriters Calculate Rental Income from Schedule E
Rental income from existing investment properties is calculated from Schedule E of your federal tax return, not from actual deposits or lease agreements. The underwriter takes the total rents received (line 3), subtracts actual expenses (taxes, insurance, repairs, management fees, mortgage interest, and depreciation as shown on the return), and adds back depreciation, which is a non-cash deduction that reduces taxable income but does not reduce actual cash flow.
The net rental income from Schedule E is averaged over two years. If the property shows a net loss after all deductions, that loss reduces your total qualifying income dollar for dollar. A borrower with $100,000 in wage income and a $12,000 net rental loss from existing properties qualifies at $88,000.
For the subject property being purchased (if it will be a rental), projected rental income can sometimes be counted. On conventional investment property loans, if the borrower does not have a two-year history of managing rental properties, no projected income is counted. If the borrower has a documented history, 75% of the projected market rent from the appraisal (Form 1007) can offset the new mortgage payment.
FHA and USDA have different rules for counting rental income from a property you are vacating (converting from primary to rental). These allow up to 75% of the documented rent from a new lease agreement to offset the old mortgage payment.
Required Documentation
- ✓Two years of federal tax returns with Schedule E (all properties listed)
- ✓Current lease agreements for all rental properties
- ✓Form 1007 Single-Family Comparable Rent Schedule from the appraisal (for subject property)
- ✓Mortgage statements for all existing rental properties (to verify the loans are reflected on Schedule E)
- ✓Property management agreements if applicable
What Most Lenders Get Wrong
- 1.Using bank statement rental deposits instead of Schedule E. The underwriter must use the tax return figure, not actual deposits.
- 2.Forgetting to add back depreciation. Depreciation reduces taxable income but does not reduce cash flow. The add-back is required and mandatory.
- 3.Counting 100% of projected rent on a new purchase. The standard is 75% of market rent, not gross rent, and only when the borrower has a qualifying rental history.
- 4.Ignoring rental losses. Net losses from existing properties reduce qualifying income and must be included in the DTI calculation.
The 75% Vacancy Factor and Why It Always Applies
Even if a rental property is fully occupied and has been for years, underwriters apply a 25% vacancy and maintenance factor to the gross rent. This is not a judgment about your property or your tenants. It is a standard underwriting adjustment that accounts for vacancy periods, maintenance costs, and unexpected expenses over the life of the loan.
The result is that $2,000 per month in gross rent produces $1,500 per month in qualifying rental income before any other expense deductions. For most landlords with a mortgage, insurance, and taxes on the property, the net qualifying rental income is often significantly lower than the actual monthly cash flow.
For Kern County investors who have owned properties for multiple years and have clean Schedule E records showing net rental income, the two-year average from the tax return is typically the most favorable calculation method. The return reflects actual depreciation add-backs and shows the lender a complete picture of the rental portfolio.
Converting Your Primary Residence to a Rental
A common scenario in Kern County: a homeowner is buying a new primary residence and wants to keep their existing home as a rental rather than sell it. This conversion creates a qualification question: can the rental income from the converted property offset the existing mortgage payment?
Fannie Mae requires either a two-year rental history on the property being converted (which means it was already a rental, not a new conversion) OR 30% or more equity in the departing residence. With 30%+ equity documented by an appraisal or automated valuation, the borrower can count 75% of a documented lease agreement against the existing mortgage payment when calculating DTI.
Without the equity threshold or the rental history, the full mortgage payment on the departing property must be counted in the DTI, which often makes it impossible to qualify for the new purchase. This is a situation where getting an appraisal or valuation on the existing home before applying can materially change the outcome.
Rental income qualification is one of the most documentation-intensive parts of mortgage underwriting, and the most common mistake I see is borrowers assuming that their actual rental income will qualify them the same way their wages do. It almost never does on a one-to-one basis. The Schedule E calculation, the vacancy factor, and the depreciation add-back must all be done correctly before I can give someone an accurate pre-approval that includes their rental portfolio.
Do you have rental properties and want to know how they affect your qualification?
Call Dan at (661) 342-9381. He will review your specific situation and documentation in a free call.