High-income physicians are among the most educated professionals in the country. They're also, statistically, among the most consistent overpayers of federal income tax. The tax code rewards proactive planning, and most physicians are too busy keeping people alive to do that.
The average medical practice overpays between $15,000 and $50,000 annually in taxes because of missed deductions and poor tax planning. That number rises exponentially once you account for compounding and the years it repeats uncorrected.
Three specific categories where physicians lose money without realizing it are Health Savings Account misuse, unclaimed deductions hiding in plain sight, and SEP-IRA miscalculations that cost self-employed physicians tens of thousands per filing.
Let me explain.
In case you missed it: How Physicians End Up Overpaying the IRS (And What to Do About It)
The HSA Is Not a Checking Account
The HSA is the only account in the U.S. tax code with a triple tax advantage. Contributions go in tax-deductible, grow tax-free inside the account, and come out tax-free when used for qualified medical expenses.
No other widely available account runs all three simultaneously.
The most significant error physicians make with their HSA is treating it like a simple checking account for current medical bills. Money goes in, copays come out, and the account never builds meaningful value. That's a waste of the most tax-efficient vehicle most physicians will ever have access to.
The other, smarter, option is to pay current qualified medical expenses out of pocket when cash flow allows, leave the HSA balance invested, and let it grow. There's no deadline on reimbursement.
However, this strategy calls for meticulous recordkeeping. Without receipts for qualified medical expenses, you won't be able to withdraw tax-free funds decades later. Consider those receipts to be legal tender, because eventually they will be.
At a 7% annual return, an invested HSA grows to roughly $340,000 over 20 years and $860,000 over 30. A king's ransom that most physicians miss out on simply because they didn't know.
Learn more: HSA: The Ultimate Retirement Account
Not Maxing Out the Annual Contribution
The 2025 maximum HSA contribution is $4,300 for individual coverage and $8,550 for family coverage. For 2026, if you have self-only HDHP coverage, you can contribute up to $4,400.
If you have family HDHP coverage, you can contribute up to $8,750. Anyone 55 or older can add another $1,000 in either year.
Not contributing the full amount in any given year is a permanent loss. Unlike a 401(k), you cannot go back and make up missed HSA contributions for prior years.
For physicians aged 55 and over, the IRS allows an additional catch-up contribution of only $1,000 annually to an HSA, so starting early is key.
Over-Contributing Without Realizing It
The flip side of under-contributing is going over the limit, which triggers its own set of problems. If your HSA has excess contributions, the funds are not tax-deductible and need to be reported as income tax and are generally subject to a 6% excise tax.
Multiple contributors make this easier to trip over than most physicians realize. Anyone can contribute to your HSA account, including a friend, a relative, or your employer. Since the annual limit applies to the total sum, you have to keep track of contributions made by others or risk going over the limit.
Employer contributions count against your annual ceiling, as well.
If your practice is depositing into your HSA on a regular payroll basis while you're also making separate contributions, the combined total needs to stay under the IRS limit or you're paying a penalty on the excess every year you leave it uncorrected.
Here's what you can do: Confirm your total HSA contributions at the start of the fourth quarter, accounting for every source. If you're over, withdraw the excess before your tax filing deadline to avoid the 6% excise tax. If you're under, make a lump sum contribution before April 15 of the following year to claim it for the prior tax year.
The CME Deduction That Keeps Giving
Physicians are required by licensing boards to maintain continuing medical education. That ongoing obligation generates deductible expenses, but a significant number of physicians either don't claim them or claim them incompletely.
One CME conference with travel can easily represent $3,000 to $5,000 in deductions. Multiple conferences, plus subscriptions and memberships, could add up to $10,000 to $15,000 annually. Most physicians track the conference registration fee and stop there.
They forget about travel, meals, and all those monthly subscriptions that auto-renew throughout the year. UpToDate subscriptions, medical journal access, and board review courses are potentially tax-deductible.
But your employment status matters. For self-employed physicians or those earning 1099 income, the IRS allows deductions for CME expenses that maintain or improve professional skills.
For strictly W-2 employees, the Tax Cuts and Jobs Act of 2017 eliminated unreimbursed employee business expenses. CME costs can only be deducted if the employer reimburses them under an accountable plan.
If you have any 1099 income at all, whether from locum work, expert witness fees, consulting, or a medical directorship, those income streams open a separate deduction bucket that most W-2 physicians don't realize they have access to.
Learn more: How does the One Big Beautiful Bill Act Affect High-Income Individuals and Taxpayers?
The Home Office Deduction
Post-COVID, a substantial number of physicians do at least some portion of their administrative work from home. Charting, peer reviews, telehealth visits, billing follow-up, and scheduling. If you do administrative or management activities from home and have no other fixed location where you perform these tasks, you may qualify for a home office deduction.
If you use part of your home exclusively for business, you can use the simplified method and deduct $5 per square foot up to 300 square feet, or the actual expense method, where you deduct the business percentage of home expenses, including utilities, insurance, and maintenance.
A 200 square foot dedicated home office in a 2,000 square foot home means 10% of your mortgage interest, utilities, and home insurance is potentially deductible.
Keep in mind that the IRS does not look kindly on rooms that double as guest bedrooms or spaces shared with personal use. If the room qualifies, the deduction's there. If it doesn't, don't force it.
Also read: Best Standing Desks for Physicians Working From Home
Malpractice Premiums, Licensing Fees, and the Deductions No One Tracks
Malpractice insurance premiums, professional licenses and certifications, state medical license renewal fees, board certifications, DEA registration, medical association memberships, and work-related subscriptions and books are all deductible for physicians who own their practice or earn 1099 income.
These are expenses physicians pay every year without question, as part of the cost of staying in practice. The mistake is paying them without deducting them, which happens when a physician's tax situation is handled reactively rather than with any forward-looking strategy.
The main benefit of being an owner rather than an employee is access to these deductions. Employees generally miss out.
Prior to 2018, it was at least possible to deduct unreimbursed work expenses on Schedule A, but as mentioned earlier, those rules changed under the Tax Cuts and Jobs Act. For W-2 physicians with no other income source, options are limited. For anyone with independent income, the door is open.
Here's what you can do: Build a running log of every professional expense you pay across the year, not just at tax time. Malpractice premiums, license renewals, journal subscriptions, CME travel, phone, and internet used for clinical work. If you're self-employed or carry any 1099 income, most of it is deductible with proper documentation.
Learn more: Tax Savings for Physicians
Confusing the Contribution Limit With What You Can Actually Contribute
The SEP-IRA is one of the most powerful retirement vehicles available to self-employed physicians and small practice owners. It also generates some of the most consistent miscalculations in physician tax returns.
The SEP-IRA contribution limit for 2025 is 25% of eligible employee compensation, up to $70,000. The limit for 2026 increases to 25% of eligible compensation, up to $72,000. That ceiling is straightforward for employed staff. For self-employed physicians, the calculation is more complicated, and most get it wrong.
If you're self-employed, your contributions are generally limited to 20% of your net income, not 25%. Net compensation for self-employed individuals is generally the net profit from IRS Schedule C reduced by the deductible self-employment tax.
The difference between 25% and 20% exists because self-employed individuals must first deduct half of their self-employment tax from gross income before applying the contribution percentage. Most of us miss this constantly, and the result is either an over-contribution that triggers a penalty or an under-contribution that leaves a meaningful deduction on the table.
A self-employed physician earning $300,000 could contribute up to $70,000 to a SEP-IRA for 2025 and deduct every penny. That's potentially $25,000 or more back in their pocket at tax time.
Using the Wrong Definition of Compensation
The IRS has an official fix-it guide for this exact problem, which tells you something about how often it happens. Contributions to participants' SEP-IRAs are frequently miscalculated because the wrong definition of compensation is used.
For an individual who is not self-employed, compensation used to determine SEP contributions generally includes wages, salaries, tips, overtime, bonuses, commissions, vacation and sick pay, fees, and other remuneration from the employer for services performed.
Compensation does not include severance pay, nontaxable fringe benefits, or worker's compensation.
Physicians with multiple income streams, or those splitting time between employed and independent work, are especially vulnerable here. Including the wrong income types in the compensation base overstates the allowable contribution, and the IRS will eventually find it.
Learn more: Solo 401(k) vs. SEP-IRA for Physicians (2026): Which Wins for Your Income Level?
Choosing the SEP-IRA When a Solo 401(k) Would Do More
The SEP-IRA is popular because it's simple. Open an account, contribute, and deduct away. But for many self-employed physicians, that simplicity comes at a cost.
Unlike other retirement plans, catch-up contributions are not allowed with SEP-IRAs. A physician over 50 with a SEP-IRA cannot contribute the additional $8,000 catch-up that a Solo 401(k) allows in 2026. A 55-year-old physician in the 37% bracket loses roughly $2,960 in tax savings per year just by being in the wrong account type.
The Solo 401(k) also allows employee deferrals on top of employer contributions, which can result in a higher total contribution at lower net income levels.
For a physician with $150,000 in self-employment income, the Solo 401(k) will generally allow a larger total contribution than a SEP-IRA, while also offering the catch-up provision and Roth conversion flexibility.
Here's what you can do: If you have self-employment income and are over 50, have your CPA run a side-by-side comparison of your SEP-IRA contribution capacity versus a Solo 401(k) before you file. If you have employees other than a spouse, the Solo 401(k) is off the table, but a SEP-IRA with accurate compensation figures and a contribution limit calculation that accounts for the self-employment tax deduction is still one of the most powerful tools available.
Learn more: The 7 Advantages of a Solo 401(k) Over a SEP IRA
The Pattern Behind the Problem
The root issue across all these categories is the same: A preemptive tax strategy.
Most general CPAs miss these because they don't work exclusively with physicians. They're not looking at your return through a physician-specific lens, or understanding that your 1099 income, multi-state locum work, and CME expenses operate differently than their other clients.
Tax filing is not the same as tax planning. The steps that reduce your bill require decisions made during the year. By April, you're reporting what has already happened.
The question worth asking is what you want to happen next year, and whether anyone on your financial team is gung-ho enough to actually help you get there.
This article is for informational purposes only and does not constitute tax or legal advice. Consult a qualified CPA or tax attorney for guidance specific to your situation.
In case you missed it: 11 Tax Deductions Physicians Miss (That Could Save You $50K+ This Year)
Frequently Asked Questions
How much do high-income physicians overpay in taxes each year?
The average medical practice overpays between $15,000 and $50,000 annually because of missed deductions and absent tax planning. For physicians earning $500,000 or more, the gap between what they owe and what a properly planned return produces can exceed $100,000 in a single year. Over a 30-year career, that compounds into as much as $1.5 million paid to the federal government unnecessarily.
What is the biggest HSA mistake physicians make?
The most costly HSA mistake is treating the account like a medical expense checking account rather than a long-term investment vehicle. Physicians who spend down their HSA balance on current copays and deductibles forfeit years of tax-free compounding. A fully funded family HSA invested at a 7% annual return grows to roughly $340,000 over 20 years and $860,000 over 30. The smarter approach is paying current medical costs out of pocket when cash flow allows and leaving the HSA balance invested, with receipts saved for tax-free reimbursement at any future point.
What are the HSA contribution limits for physicians in 2025 and 2026?
For 2025, the HSA contribution limit is $4,300 for self-only HDHP coverage and $8,550 for family coverage. For 2026, those limits increase to $4,400 for self-only and $8,750 for family coverage. Physicians aged 55 and older can contribute an additional $1,000 in catch-up contributions in either year. These limits apply to total contributions from all sources, including employer deposits, so physicians whose practices contribute on their behalf need to track the combined total carefully to avoid the 6% excise tax on excess contributions.
What happens if a physician over-contributes to an HSA?
Excess HSA contributions are not tax deductible, must be reported as taxable income, and are subject to a 6% excise tax for every year they remain in the account uncorrected. The most straightforward fix is withdrawing the excess amount, along with any earnings it generated, before the tax filing deadline. Physicians who miss that window must file IRS Form 5329 each year and pay the excise tax until the excess is resolved. The most common cause of over-contribution is failing to account for employer HSA deposits when calculating personal contributions.
Which tax deductions do high-income physicians most commonly miss?
The most frequently missed deductions for physicians with 1099 or self-employment income include CME conference registration fees plus associated travel and lodging, UpToDate and medical journal subscriptions, malpractice insurance premiums, state medical license and DEA registration renewal fees, professional association dues, and the home office deduction for administrative work performed exclusively at home. A single CME conference with travel can represent $3,000 to $5,000 in deductions. Multiple conferences plus recurring subscriptions and memberships can add up to $10,000 to $15,000 annually in deductions that most physicians never claim.
Can W-2 physicians deduct CME expenses?
Not directly. The Tax Cuts and Jobs Act of 2017 eliminated unreimbursed employee business expense deductions, which means W-2 physicians cannot deduct CME costs on their personal return. The exception is employer reimbursement through an accountable plan, a formal arrangement where the physician submits receipts and is reimbursed without the amount being counted as taxable income. Physicians with any 1099 income, from locum work, expert witness fees, consulting, or medical directorships, can deduct qualifying CME expenses against that income, even if their primary position is W-2.
What is the SEP-IRA contribution limit for self-employed physicians in 2025 and 2026?
The SEP-IRA contribution limit for 2025 is 25% of eligible compensation, up to $70,000. For 2026, the cap increases to $72,000. However, self-employed physicians cannot contribute a true 25% of gross income. Because self-employed individuals must first deduct half of their self-employment tax from net profit before calculating the contribution, the effective contribution rate works out to approximately 20% of net self-employment income. A self-employed physician earning $300,000 in net self-employment income could contribute up to $70,000 for 2025 and deduct every dollar, potentially putting $25,000 or more back in their pocket at tax time.
What is the most common SEP-IRA calculation mistake physicians make?
The most common error is applying the stated 25% contribution rate directly to gross self-employment income rather than to net earnings after deducting half of the self-employment tax. This inflates the calculated contribution limit, resulting in an over-contribution that triggers IRS penalties. A related mistake is using the wrong definition of compensation altogether, such as including severance pay, nontaxable fringe benefits, or income types that do not qualify under IRS rules. The IRS maintains a formal SEP Plan Fix-It Guide specifically for this error, which reflects how consistently it appears in physician tax returns.
Should self-employed physicians choose a SEP-IRA or a Solo 401(k)?
It depends on income level, age, and whether the physician has employees. For physicians over 50, the Solo 401(k) has a meaningful structural advantage: it allows catch-up contributions of $8,000 in 2026, while SEP-IRAs do not permit catch-up contributions at all. A physician in the 37% federal bracket loses roughly $2,960 in tax savings per year by being in the wrong account type. At lower income levels, the Solo 401(k) can also allow higher total contributions because it combines employee deferrals with employer contributions, while the SEP-IRA is limited to the employer-side percentage calculation. Physicians with employees other than a spouse are generally ineligible for a Solo 401(k) and should focus on accurate SEP-IRA contribution math instead.
What does proactive tax planning actually mean for physicians?
Proactive tax planning means making financial decisions throughout the year that reduce your tax bill before the year closes, rather than discovering what you owe in April. For physicians, it means confirming HSA contributions by the fourth quarter, tracking deductible professional expenses in real time, evaluating retirement account structure before year-end, and working with a CPA who initiates those conversations rather than waiting to be asked. The specific moves that lower a physician's tax bill, such as funding the right accounts correctly, claiming the right deductions, and structuring self-employment income properly, all require action before December 31. After that date, the year is closed, and most options go with it.
