Most physicians overpay taxes not by missing exotic loopholes but by missing the basics. The dividing line for almost everything is whether the income arrives on a W-2 or a 1099.
Physician tax frustration usually starts with a discovery: the $4,000 of CME, board fees, and license renewals you paid out of pocket as an employee saves you nothing on your federal return. Employee business deductions disappeared in 2018 and that change is now permanent. The physicians who pay meaningfully less tax are the ones who understand which bucket each dollar of income sits in - and arrange the buckets deliberately.
If all of your income is employment income, your levers are structural, not itemized: max every pre-tax account available (401(k), 403(b), 457(b), HSA), use dependent-care FSAs, bunch charitable giving into a donor-advised fund in alternating years, and check your state's 529 deduction. The state-and-local-tax (SALT) deduction cap was lifted to $40,000 starting in 2025 with income-based phase-downs and scheduled changes through 2029 - worth checking annually if you live in a high-tax state.
Beyond that, the W-2 move is negotiation, not deduction: employer-paid CME allowances, licensing, DEA registration, and relocation are worth more than the same dollars as salary, because they arrive untaxed. See the negotiation guide for how to ask.
The moment you earn independent income - moonlighting shifts, locum work, expert witness review, medical surveys, telehealth on the side - you have a business, and Schedule C opens. Now CME, licenses, DEA fees, society dues, malpractice premiums for that work, equipment, a true home office, and mileage between work sites become deductible against that income.
The biggest 1099 lever is retirement: a solo 401(k) lets you make employer contributions on self-employment earnings, on top of what your hospital plan allows in many configurations. Combined with the deduction for self-employed health insurance in some situations, even modest moonlighting income can shelter five figures. The mechanics are covered in the locum tenens guide.
Section 199A gives pass-through business owners a deduction of up to 20% of qualified business income, and it is now a permanent feature of the code. The asterisk: medicine is a "specified service trade or business," so the deduction phases out as taxable income rises past the annually-adjusted thresholds. For physicians near the line, maxing pre-tax retirement contributions does double duty - it cuts taxes directly and can preserve QBI eligibility on 1099 income. This is exactly the kind of interaction worth modeling rather than guessing.
A few classics that fail under audit: commuting miles to your primary hospital (never deductible), suits and watches ("clothing suitable for everyday wear"), and 100%-business-use claims on a family vehicle. Scrubs and equipment genuinely required and not worn outside work are fine. Meals tied to a documented business purpose are generally 50% deductible. The pattern in physician audits is not exotic fraud - it is plausible deductions with no contemporaneous records. A spreadsheet updated monthly is cheap insurance.
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