Schedule E Rental Income and Your DTI: How Underwriters Add Depreciation Back and What Vacancy Factor They Apply

Have you ever looked at line 21 of your Schedule E, seen a number sitting in parentheses, and assumed that loss was going to sink your next mortgage application? If you own one or two rentals, that line is probably the most misread figure in your entire loan file.

The number an underwriter drops into your debt-to-income ratio is almost never the rent you collect, and it is almost never the profit or loss your accountant reported. It is a third figure entirely, produced by a cash-flow calculation that restores several of your deductions and then subtracts the full housing payment on that property.

What follows is that calculation in order, under the guidance that actually governs it as of September 2026, with one worked example showing the same rental helping a borrower in one tax year and hurting them in the next. Every dollar figure in that example is illustrative and labeled as such.

Which Rule Governs Your File Right Now

Fannie Mae rewrote its rental income policy on September 2, 2026. Announcement SEL-2026-08 moved the guidance out of B3-3.1-08 and into a new modular chapter, B3-3.8, Rental Income, split into sections covering the subject property, short-term rental, non-subject property, departing residences, and investment properties purchased within 45 days of the subject.

Those revisions are effective for loans with application dates on and after November 1, 2026, and lenders are encouraged to implement them immediately. That timing matters more than it sounds, because for the next several weeks two legitimate editions of the same rule are in circulation at once.

Note that the edition in force before the effective date carries its own revision date at the top of the page, and its language on the experience and averaging questions below is not identical to the new chapter. Before you assume any figure in this article maps cleanly onto your file, ask your loan officer which edition their underwriting desk is running.

Why Gross Rent Never Reaches Your DTI

Rental income enters your ratios as a net figure rather than as income the way a paycheck does. That net figure is the qualifying rental income for the property, minus the full PITIA on that property, meaning principal, interest, taxes, insurance and association dues.

When the subtraction lands positive, the surplus can be treated as qualifying income. When it lands negative, B3-3.8-04, Rental Income from Non-Subject Property (09/02/2026) requires the lender to add the monthly net rental loss to your total monthly obligations.

This is the structural reason a rental can help or hurt the same borrower depending on the year. The property is scored on a narrow question: whether one year of documented cash flow covers one month of its own housing payment.

The Add-Backs, Line By Line

The cash-flow analysis starts at the bottom of Schedule E Part I and works backward. The deductions it restores are the ones that either cost you no cash or are about to be charged against you a second time through the PITIA, and they include but are not limited to:

The logic behind the interest, tax, insurance and HOA add-backs is arithmetic rather than generosity. Those four expenses sit inside the PITIA that gets subtracted at the end, so leaving them buried in the expense total would charge you for them twice.

Where The 75 Percent Factor Actually Applies

Most owners have heard of a 75 percent rule and assume it lands on their Schedule E result as a vacancy haircut. That is the single most common misunderstanding in this calculation, and it is worth correcting precisely.

Under B3-3.8-04, the 75 percent multiplier applies when the property is not reported on Schedule E at all. In that case the lender multiplies the lease amount by 75 percent and then subtracts the PITIA, with the reduction standing in for the vacancy and maintenance a tax return would otherwise have documented.

Accordingly, a property you bought and rented out in 2026 will not use the add-back method this year, simply because there is no return to analyze yet. It runs through the lease path instead, which is also the path most relevant to buyers using delayed financing to recover a cash purchase before their first full tax year closes.

The Twelve-Month Property Management Experience Gate

Producing a positive number and being allowed to use it are two separate questions. B3-3.8-01, General Rental Income Information (09/02/2026) provides that lenders may only use positive rental income for qualifying income if the borrower has at least 12 months of property management experience.

Without that history, the lender may only use qualifying rental income to offset the PITIA. In practice the property becomes DTI-neutral rather than DTI-positive, so it stops counting against you without helping you buy anything larger.

Be aware that this gate runs in one direction only. A loss still counts against you at full weight whether or not you clear the experience threshold, which is a real consideration for first-time landlords weighing a house hack against a conventional investment purchase.

A Worked Example On The Schedule E An Underwriter Reads In 2026

Assume a single-family rental owned for all of 2025, carrying a $175,000 mortgage balance on an assumed 6.5 percent 30-year note. It rents for $2,500 a month and appears as Property A on Schedule E Part I of the most recent return in the file.

Line 21 shows a loss of $2,700. Most owners stop reading right there and conclude the rental is a pure liability in the eyes of an underwriter.

The cash-flow analysis then restores five figures: depreciation of $7,090, mortgage interest of $9,900, taxes of $4,320, insurance of $1,680, and HOA dues of $2,640. Added to the $2,700 loss, those produce adjusted annual cash flow of $22,930, or $1,910.83 a month across 12 months in service.

Now the PITIA comes back off. Principal and interest on the assumed $175,000 at 6.5 percent runs roughly $1,106, and monthly taxes, insurance and HOA come to $360, $140 and $220 respectively, for a PITIA of $1,826.

Net rental income is $1,910.83 minus $1,826, or roughly $85 a month. A property that reported a $2,700 annual loss to the IRS therefore contributes about $85 of qualifying income, which is positive, useful at the margin, and nothing like the $2,500 of gross rent the owner expected to be credited.

The Same Property, One Bad Year Later

Change a single variable and watch the direction reverse. A tenant leaves in June, the unit turns slowly, and the property is rented for 214 of 365 days, so rents received fall to $17,500 while repair costs climb, pushing total expenses to $33,030 and line 21 to a loss of $15,530.

The add-backs do not shrink with the rent roll. Depreciation, interest, taxes, insurance and dues still total $25,630, which lifts adjusted annual cash flow back to $10,100.

Here the denominator decides everything. B3-3.8-04 permits averaging over the number of months the property was in service rather than over 12, when the property was out of service for less than a year and the file documents that through repair expenses and Fair Rental Days below 365.

Against a 45 percent DTI ceiling, $601 a month of added obligation is not a rounding error. Carried entirely into principal and interest at the same illustrative 6.5 percent 30-year terms, it corresponds to roughly $95,000 of loan amount, and to less than that once taxes and insurance claim their share of the payment.

All of this adds up to a point about documentation rather than about the property. The same twelve months of ownership, the same tenant and the same tax return can generate two very different qualifying numbers depending on whether the file bothers to explain the vacancy.

How Freddie Mac And FHA Handle The Same Property

Conventional loans sold to Freddie Mac follow a parallel but separately worded rule. Guide Section 5306.1 directs sellers to Form 92, Net Rental Income Calculations – Schedule E, and lists the same family of add-backs: insurance, mortgage interest paid to banks, real estate taxes, HOA dues, depreciation or depletion, documented one-time losses such as casualty loss, and non-cash deductions such as amortization.

Freddie frames its experience test around ownership history, providing that the full amount of net rental income may be used only when the file demonstrates that at least one borrower has a minimum of one year of investment property management experience. Its 30 percent cap, under which net rental income used for qualifying must not exceed 30 percent of total stable monthly income, attaches to accessory dwelling unit rent, which matters if you are counting an ADU as an income asset.

FHA runs different arithmetic entirely, set out in HUD Handbook 4000.1. With a history of net rental income the mortgagee averages the amount shown on Schedule E and may add depreciation back; with limited or no history, effective net rental income is PITI deducted from 75 percent of the lesser of appraiser-reported fair market rent or the rent in the lease.

Keep in mind that FHA layers a separate arithmetic test on three- and four-unit purchases through the self-sufficiency test. That test answers a different question from this one, and clearing it says nothing about how your Schedule E will score.

What To Assemble Before You Apply

Most of the damage in this calculation is done by missing paper rather than by bad numbers. The documents that move the result the most include but are not limited to:

• Complete Schedule E, every page. Underwriting needs Part I in full, including line 2 Fair Rental Days and the itemized expense lines, because a summary page strips out exactly the detail the add-backs depend on.
• Depreciation schedule or Form 4562. Line 18 sometimes combines depreciation and depletion, and the supporting detail substantiates the largest single add-back in most files.
• A written explanation of any vacancy. Pair it with repair invoices and the Fair Rental Days figure so the months-in-service denominator is supportable rather than merely asserted.
• Documentation of one-time expenses. Casualty losses and non-recurring repairs are added back only when documented, so an unlabeled five-figure line will be treated as an ordinary operating cost.
• Evidence of property management experience. Prior-year Schedule E filings, executed leases or a management agreement establish the 12-month history that decides whether positive income counts at all.
• Current mortgage statement, tax bill, insurance declaration and HOA statement. These four build the PITIA that gets subtracted, and stale figures here quietly distort the net in either direction.

All of these serve one purpose, which is making the underwriter's number match the property's actual economics. The file that explains itself tends to produce the higher figure, and it produces it without a second round of conditions two weeks before closing.

Where This Sits In The Rest Of Your File

Schedule E arithmetic is only one of several routes a rental can take into a loan, and it is often not the most efficient one. Owners whose returns are heavily depreciated sometimes fare better with a DSCR loan that qualifies on property cash flow instead of personal DTI, and self-employed owners with complex returns frequently compare it against bank statement loan documentation.

Equally, pulling equity out of a rental changes both halves of this calculation at once, raising the mortgage interest add-back and the PITIA subtraction together, which is worth modeling before you choose between a HELOC and a cash-out refinance. If you are stacking rentals deliberately, the sequencing rules in repeat house hacking interact directly with the 12-month experience gate described above.

You may want to consider running your own Schedule E through the add-back sequence before your loan officer does, simply so the number in your head matches the number that lands in the file. Bring the result and the supporting documents to that conversation, and ask which Selling Guide edition the lender is underwriting to.

Definitions And Background Information

This article is for informational purposes and is not financial, mortgage, or contractor advice. Consult a licensed professional in your jurisdiction.