Home Office and §280A Rules for 1099 Physicians
The regular-and-exclusive-use rule is the whole game. Miss it and the 1099 physician home office deduction disappears no matter how many square feet you devote or how carefully you track expenses. Meet it, and a locum tenens physician, an independent-contractor consultant, or a rural telehealth doctor can defensibly deduct a portion of rent or mortgage interest, utilities, insurance, and depreciation.
The rules have not changed materially since the TCJA closed the door on unreimbursed employee business expenses. What has changed is who the rules now apply to. The rise of 1099 contract medicine, locum staffing, and telehealth in Idaho and Utah has pushed a large group of physicians into a situation where §280A is worth understanding.
Who Actually Qualifies: W-2 vs. 1099 Physician
The employee-versus-contractor distinction matters more than any other threshold. Under current law, a W-2 employed physician cannot deduct unreimbursed home office expenses on the federal return. That deduction, which existed as a miscellaneous itemized deduction before 2018, was eliminated for tax years 2018 through 2025 and remains eliminated under the One Big Beautiful Bill Act.
A physician paid on Form 1099, whether as a sole proprietor, an LLC member, or the shareholder of a professional corporation reporting distributive share income, is treated as running a trade or business. That physician can deduct qualifying home office expenses against self-employment income, and can also treat the home office as a principal place of business for mileage purposes, which is often the more valuable side effect.
Physicians whose income mixes W-2 hospital work and 1099 telehealth or locum work can deduct only for the 1099 side and only if the home office is used regularly and exclusively for that specific self-employed practice.
The §280A Regular and Exclusive Use Test
Section 280A allows a home office deduction only when a portion of the home is used both regularly and exclusively for business, and either the principal place of business or a place where the physician meets patients or clients in the ordinary course of the practice.
Regular means recurring use, not occasional. Exclusive is stricter than most physicians realize. A guest bedroom that doubles as a home office once a week does not qualify. Neither does a corner of a family room. The space must have no meaningful personal use. A separately partitioned room dedicated to the 1099 practice is the safest structure. A clearly demarcated area within a larger room can qualify, but the physician needs to be able to describe and, ideally, show that no personal activity occurs there.
For a telehealth physician who takes patient encounters exclusively from a home office, principal-place-of-business status is usually easy to establish. For a locum tenens physician who provides services onsite at multiple hospitals, the home office qualifies as a principal place of business if administrative and management activities such as scheduling, credentialing, billing, and follow-up documentation are performed there and no other fixed location is used for those activities.
Simplified Method vs. Actual Expense Method
The simplified method is a flat $5 per square foot up to 300 square feet, capped at $1,500 per year. It is easy, requires no receipts, and cannot generate a loss.
The actual expense method allocates a portion of home expenses to the office based on the percentage of total square footage devoted to the business. Deductible expenses can include rent or mortgage interest, real estate taxes, utilities, insurance, repairs, and depreciation on the business portion. On a home where the actual expenses attributable to a 200 square foot dedicated office exceed $1,000 for the year, the actual method wins.
The tradeoff is complexity. The actual method requires records, an allocation schedule, and depreciation of the business portion of the home, which then affects the basis and gain calculation when the home is later sold. For most physicians with modest home office footprints, the simplified method gets 80 percent of the value with 20 percent of the effort.
Special Cases: Telehealth, Locum Tenens, and Second Practices
Three fact patterns come up often. A telehealth physician conducting all patient encounters from a home office typically has the strongest deduction. A locum physician whose administrative work happens at home has a defensible principal-place-of-business claim even though clinical work happens elsewhere. A physician who owns a small side practice, such as a medical spa or wellness consultancy, can deduct for a home office dedicated to that entity even while working a separate W-2 or 1099 clinical role.
The one fact pattern to avoid: claiming a home office for a W-2 role. Even with an employer letter, this deduction is not available on the federal return through 2025 and remains unavailable under OBBBA.
Recordkeeping That Holds Up in an Audit
Photograph the space. Keep utility, insurance, and mortgage or rent statements. Maintain a simple log or calendar showing that the office was used for the 1099 practice on a regular basis. If the physician chose the actual method, document the square footage measurement and the allocation calculation.
The home office deduction is not aggressive tax planning. It is a straightforward statutory deduction with a strict qualification test. Our team at Cooper Norman advises physician and dental practice owners across Idaho and Utah on practice tax planning, and getting the 1099 side clean is often the fastest win for a new locum or telehealth physician.
This overview is general information, not tax advice for your specific situation.