The first year you file a Schedule C, you discover an unfamiliar problem: nobody tells you what counts. As a W-2 employee, your deductions were decided for you. As an independent physician, every dollar you spend is a question, and the answers arrive from unreliable sources. A colleague in the lounge is confident that his truck is deductible. A social media account promises that hiring your children converts tuition into a business expense. Both claims contain a grain of statute wrapped in a great deal of wishful thinking.
The governing standard is one sentence long, and everything below descends from it. This article walks the deductions an independent physician actually has, the substantiation each requires, and the three structures that reliably attract examination.
Ordinary and necessary is a lower bar than you fear and a higher one than you hope
Section 162(a) allows a deduction for "all the ordinary and necessary expenses paid or incurred during the taxable year in carrying on any trade or business." Courts read "ordinary" as common and accepted in your line of work, and "necessary" as helpful and appropriate rather than indispensable. That is a forgiving standard: a conference registration does not have to be essential to your practice, only the kind of expense physicians in your specialty normally incur.
What the standard does not forgive is the personal. An expense you would have incurred anyway, living your life, does not become deductible because a business purpose can be narrated onto it afterward. The examination question is never "can you explain this?" It is "would this expense exist if you did not practice medicine?"
Key insight
The practical test for a borderline expense: describe it in one sentence to a skeptical colleague, including who used it, when, and for what clinical or business purpose. If the sentence requires a qualifier — mostly, partly, we also — you have a percentage allocation to compute, not a full deduction to claim. Percentages are perfectly legitimate. Rounding them up to 100 percent is where people get into difficulty.
The deductions nobody argues about
These are direct, fully deductible, and rarely questioned when documented. They are also, for most independent physicians, the bulk of the total.
| Expense | Treatment | Note |
|---|---|---|
| Malpractice premiums | Fully deductible | Including the claims-made annual premium |
| Tail coverage | Fully deductible when paid | Often a five-figure deduction in one year |
| State medical license | Fully deductible | Each state you maintain |
| DEA registration | Fully deductible | Three-year cycle |
| Board certification and MOC | Fully deductible | Initial certification included |
| Hospital credentialing fees | Fully deductible | |
| Professional society dues | Fully deductible | Excluding any lobbying portion the society discloses |
| Medical journals and references | Fully deductible | Subscriptions, point-of-care tools |
| Scrubs and lab coats | Fully deductible | Not suitable for ordinary wear |
| Billing and EMR services | Fully deductible | |
| Business liability and cyber coverage | Fully deductible |
Tail coverage deserves emphasis because its timing is unusual. When you leave a claims-made arrangement, the tail premium can run tens of thousands of dollars, and it is deductible in the year you pay it. Landing that expense in a high-income year rather than a low one is worth real money, and it is occasionally within your control during contract negotiation.
Continuing education travels well; the meals travel at half price
CME is deductible when it maintains or improves the skills your current practice requires — registration, course materials, airfare, lodging, and ground transportation for the days of the conference. Education that qualifies you for a new trade or business is not deductible, which is the rule that excludes an MBA pursued to leave clinical medicine, and generally excludes fellowship training pursued before you are established in practice.
Meals are the exception that catches people. Business meals, including meals while traveling for CME, are limited to 50 percent under §274(n)(1). The temporary 100 percent deduction for restaurant meals expired for expenses paid after December 31, 2022, and has not returned. Any advice still citing it is at least three years stale.
Travel mixing a conference with a vacation is deductible only for the business portion. Airfare remains deductible if the trip was primarily for business, but lodging, meals, and local transportation are allocated by day. Your spouse's airfare is not deductible unless your spouse is a bona fide employee of the practice with a genuine business purpose for attending.
Important
Section 274(d) imposes a heightened substantiation requirement on travel, meals, and listed property: you must be able to show the amount, the time and place, and the business purpose. A credit card statement showing $340 at a hotel is not substantiation. The conference agenda, your registration confirmation, and a note of the dates you attended are. Records assembled contemporaneously carry far more weight than records reconstructed two years later under examination.
Equipment can be deducted entirely in the year you buy it
Ultrasound units, procedure equipment, examination furniture, computers, and office fixtures are capital assets that would ordinarily be depreciated over several years. Two provisions collapse that schedule.
Section 179 lets you elect to expense the full cost immediately. For taxable years beginning in 2026 the maximum is $2,560,000, reduced dollar for dollar once §179 property placed in service exceeds $4,090,000 (Rev. Proc. 2025-32, §4.24) — ceilings a solo physician will never approach. Section 179 does carry a real constraint: the deduction cannot exceed taxable income from the business, so it cannot create a loss.
Bonus depreciation under §168(k) has no such income limitation. The One Big Beautiful Bill Act (Pub. L. 119-21) replaced the scheduled phasedown with a permanent 100 percent additional first-year depreciation deduction for qualified property acquired after January 19, 2025 (Notice 2026-11). Equipment placed in service today is fully deductible today.
Example calculation
Assumptions, stated explicitly: independent physician, 35% federal marginal bracket, 5% state rate, purchasing a $42,000 ultrasound unit placed in service in 2026, used 100% for the practice.
- Deduction taken in year one under §168(k): $42,000
- Federal tax reduced: $42,000 × 35% = $14,700
- State tax reduced: $42,000 × 5% = $2,100
- Self-employment tax reduced (Medicare only, wages above the $184,500 base): $42,000 × 0.9235 × 3.8% = $1,474
- Total first-year tax reduction: $18,274
- Net cost of the equipment: $42,000 − $18,274 = $23,726
The deduction changes the price. It does not change whether you needed the machine — a 43% discount on equipment you will not use is still a complete loss.
The home office test most clinicians fail
The home office deduction requires that a specific area of your home be used exclusively and regularly for your trade or business. Exclusively means what it says: the room may not double as a guest bedroom, a family study, or the place the treadmill lives. Regularly means recurring, not occasional (IRS Publication 587).
Then a second test applies. The space must be your principal place of business, or a place you meet patients in the normal course of business. Most independent physicians see patients at a hospital, surgery center, or clinic — so the route runs through the administrative alternative: you use the space exclusively and regularly for administrative or management activities, and you have no other fixed location where you conduct substantial administrative work.
That last clause is where clinicians fail. If you do your charting, billing review, and scheduling in a hospital office available to you, your home office is not deductible no matter how exclusively you use it. If you have no such office — a locums physician, a telemedicine practice, a contractor with no assigned space — the deduction is clean and often overlooked.
The simplified option deducts $5 per square foot up to 300 square feet, capping at $1,500, with no depreciation and far lighter recordkeeping. For a modest space it is usually the right choice; actual expenses win when your home is expensive and the office is a meaningful fraction of it.
Important
Employees may not claim a home office deduction. The Tax Cuts and Jobs Act suspended miscellaneous itemized deductions, and OBBBA made that suspension permanent. If your income arrives on a W-2, the room in your house is not a deduction regardless of how much charting you do there. This is the single most common piece of stale advice physicians repeat to one another, and it has been wrong since 2018. The W-2 and 1099 comparison is worked through in the employment classification decision.
Vehicle, phone, and internet are percentages, and the percentage is not 100
Commuting from home to your regular workplace is never deductible. Driving between clinical sites during a workday, to a hospital where you take call as an independent contractor, or to a conference, is.
Two methods exist. The standard mileage rate is simpler and usually larger for ordinary cars. For 2026 the business standard mileage rate is 72.5 cents per mile from January 1 through June 30 (Notice 2026-10) and 76 cents per mile from July 1 through December 31, following a mid-year revision for fuel prices (Announcement 2026-11). A mid-year split is unusual, and a log kept as a single annual total will compute incorrectly this year — segregate your miles by half.
The actual-expense method deducts the business-use percentage of fuel, insurance, repairs, and depreciation. It generally beats mileage for expensive or heavy vehicles, and it commits you: once you use actual expenses with accelerated depreciation on a vehicle, you cannot switch back to mileage for it.
Phone and internet follow the same logic without the formal methods. Estimate the business-use fraction honestly, document how you arrived at it, and apply it. A physician deducting 100 percent of a household internet connection is claiming that nobody in the home ever streams anything.
The two largest deductions are not business expenses at all
Both sit above the line on Schedule 1 rather than on Schedule C, which means they reduce income tax but not self-employment tax.
Health insurance under §162(l). A self-employed physician may deduct premiums for medical, dental, and qualified long-term care coverage for self, spouse, dependents, and children under 27. Two limits matter. The deduction cannot exceed earned income from the trade or business the plan is established under. And it is unavailable for any month you are eligible to participate in a subsidized health plan maintained by an employer of yours or of your spouse — eligibility disqualifies you, whether or not you enroll. Section 162(l)(4) confirms the deduction does not reduce net earnings from self-employment, so it saves income tax only.
Retirement contributions. A solo permits an employee deferral of $24,500 for 2026 plus an employer contribution, with total additions capped at $72,000 (or $80,000 with the $8,000 catch-up at age 50 and above; $83,250 in the expanded 60-through-63 window). For a physician with $250,000 of net profit, this is frequently the largest single deduction on the return — larger than every expense in the table above combined. The mechanics belong in legitimate tax reduction, and the account setup in the 1099 starter kit.
Three structures that reliably attract examination
Personal travel dressed as CME. A conference in a resort destination is legitimate; physicians attend them constantly. What is not legitimate is a seven-day trip built around a four-hour online-eligible session, with the family on the itinerary and full airfare deducted. Examiners look at the ratio of conference hours to trip days, and §274(d) requires you to produce the agenda. Attend the sessions, deduct the business days, pay for the vacation days yourself.
Employing family members who do not work. Paying your child a genuine wage for genuine services is legal and occasionally sensible: in a sole proprietorship or a partnership in which each partner is a parent, wages to a child under 18 are exempt from Social Security and Medicare tax, and under 21 from FUTA. The abuse is paying a nine-year-old $15,000 to "model for marketing materials." The wage must be reasonable for actual services rendered, the work must occur, and you must run real payroll with real records. The FICA exemption also disappears entirely if you have incorporated.
Losses from activities that are not businesses. Section 183 disallows deductions from an activity not engaged in for profit beyond the income it generates, and hobby expenses are no longer deductible at all following the suspension of miscellaneous itemized deductions. An activity producing a profit in three of five consecutive years is presumed to be for profit; one producing losses year after year while conveniently absorbing personal costs is the paradigm case.
Quick takeaway
The deductions that survive examination are boring: malpractice, licensure, CME, equipment, retirement. They are also the large ones. The aggressive positions circulating online concern small dollars, carry real penalty exposure, and cost more in accounting fees than they return. Claiming every deduction you are entitled to and none that you are not is not a compromise position — for a physician, it is also the highest-value one.
Common questions
Can I deduct my scrubs but not my other work clothes?
Yes, and the distinction is whether the clothing is suitable for ordinary wear. Scrubs, lab coats, and clinical footwear worn only at work qualify. The suit you wear to a deposition does not, because a suit is ordinary clothing regardless of why you bought it.
Is my student loan interest a business expense?
No. Student loan interest is a separate above-the-line deduction subject to income phase-outs that essentially every attending exceeds. It is not a §162 business expense, and structuring it as one is not available.
What records do I actually need to keep?
Receipts for everything above roughly $75, plus contemporaneous notes of business purpose for anything under §274(d) — travel, meals, and vehicle use. A dedicated business account and card does most of this automatically by segregating the transactions. Keep records for at least three years after filing, and seven years for anything involving depreciation.
Should I pay someone to do this return?
Usually yes, once you have a Schedule C with equipment, a home office, and a retirement plan. A return with those elements takes a competent preparer a few hours and typically costs $800 to $2,000, which is recovered by a single correctly handled depreciation election. Prepare the organized records yourself; that is where the fee actually goes.
What to do next
- Open last year's expenses and sort them into three piles: clearly business, clearly personal, and percentage. The third pile is where your attention belongs.
- Confirm whether you have a fixed administrative workspace provided elsewhere. That single fact decides your home office deduction before you measure anything.
- Split your 2026 mileage log at June 30. The rate changed mid-year, and a single annual total will produce a wrong number.
- Check your §162(l) eligibility against your spouse's employer plan. Eligibility alone disqualifies the deduction, and this is frequently missed.
- Open a dedicated business checking account and card if you have not. It converts substantiation from a project into a byproduct.
- Before any year-end equipment purchase, compute the after-tax cost using the worked example above, then ask whether you would buy it at that price. If the answer is no, the deduction was never the reason.
Every deduction above also lowers the net profit your quarterly estimates are computed from, which means your set-aside percentage should be applied to profit rather than to gross receipts — the mechanics of that are in the quarterly set-aside system.
Deduction discipline compounds quietly: the physician who claims correctly every year and never fields an examination letter ends up ahead of the one who claims aggressively and spends two years defending it. If organizing this against your own numbers is useful, the tools here do that, though the protocol above works with or without us. This is education, not individualized financial advice.