Tax planning for internists: the wide-path career

IM career paths span primary care, hospitalist, subspecialty bridge, and DPC. The tax structure should reflect where you sit. As an internist, your career is a study in breadth, touching every corner of medicine. Your financial plan, particularly your tax strategy, needs that same adaptability. A hospitalist’s W-2 reality is worlds away from a DPC owner’s Schedule C, and the tax code treats them with entirely different rules. Most generic “physician finance” advice misses this nuance, lumping all doctors together and often focusing on strategies that only apply to high-earning surgical subspecialists. This article is different. We’ll break down five specific, actionable tax strategies that are particularly powerful for internists, whether you’re fully employed, running a side hustle, or building a real estate portfolio. For a broader look at the financial landscape of your specialty, you can explore the full collection of internal medicine free tools and resources available. Let’s get specific.

The 199A QBI Deduction: A Tax Break Internists Can Actually Keep

Most physicians hear about the Section 199A Qualified Business Income (QBI) deduction and immediately tune out. They’ve been told it doesn’t apply to them because medicine is a “Specified Service Trade or Business” (SSTB), and their income is too high. For many specialists, that’s true. For many internists, it’s a costly misconception.

Here’s how it works: The QBI deduction allows owners of pass-through businesses (like an S-Corp or sole proprietorship) to deduct up to 20% of their business income from their taxes. For SSTBs, this powerful deduction begins to phase out and then disappears entirely once your taxable income exceeds certain thresholds. For 2026, those thresholds are projected to be around $394,000 for single filers and $787,000 for those married filing jointly (MFJ).

While a neurosurgeon might blow past that limit easily, many internists, particularly those in primary care or academic roles, often have household incomes that fall within or just above this phase-out range. This is where strategic AGI management becomes critical. The phase-out is based on your taxable income, not your gross salary. You have significant control over that number.

The How-To Sequence for Preserving Your QBI Deduction:

1. Calculate Your Proximity: Look at your household’s total income. If you’re an independent contractor or have a DPC practice and your MFJ income is, say, $850,000, you’re likely out of the running. But if it’s closer to $800,000, you have a real shot.
2. Aggressively Lower AGI: Your goal is to pull your taxable income below the $787,000 MFJ cliff. You do this with “above-the-line” deductions.
   • Max Out Retirement Accounts: This is non-negotiable. If you and your spouse are both contributing the maximum to your 401(k) or 403(b) accounts, you can reduce your AGI by over $50,000.
   • Fund Your HSA: A family Health Savings Account contribution can lower your AGI by another $8,750 (2026 limit).
   • Consider a Cash Balance Plan: If your practice structure allows, this defined benefit plan can shelter an additional six figures of income per year, dramatically reducing your AGI.
3. Bunch Charitable Donations: If you’re charitably inclined, don’t just write a check each year. “Bunch” several years’ worth of donations into a single year and contribute them to a Donor-Advised Fund (DAF). A $50,000 contribution to a DAF provides an immediate itemized deduction, further lowering your taxable income in the year it matters most.

The Trap to Avoid: The biggest mistake is looking at your gross income and assuming you don’t qualify. A DPC physician couple with $820,000 in gross income might max two 401(k)s ($58,000), a family HSA ($8,750), and make a $25,000 DAF contribution. Suddenly, their AGI is down to $728,250, well within the QBI deduction range, potentially saving them tens of thousands in taxes.

The W-2 Deduction Rescue: Your 1099 Side Hustle

One of the most frustrating changes from the 2018 Tax Cuts and Jobs Act (TCJA) was the elimination of unreimbursed employee expense deductions. For W-2 hospitalists and employed primary care physicians, this was a direct financial hit. All those costs you used to write off—CME travel, board exam fees, state licensing, DEA registration, medical journals, scrubs, a portion of your cell phone bill—vanished. You now pay for them with post-tax dollars.

There is an elegant solution: earn some 1099 income. Any amount of self-employment income, whether from telemedicine, consulting, medical directorships, or expert witness work, allows you to open a Schedule C (Profit or Loss from Business). This simple form is your key to unlocking those lost deductions.

Here’s the mechanism: Those professional expenses are no longer “unreimbursed employee expenses.” They are now “ordinary and necessary” business expenses for your side business. You can deduct the full cost of your state license, your DEA fee, and your specialty society dues against your 1099 income. You can also deduct a portion of your home office, internet, and cell phone costs related to that business activity.

The How-To Sequence for Rescuing Deductions:

1. Establish a 1099 Income Stream: Pick up a few telemedicine shifts per month, agree to review a case for a law firm, or take on a small medical director role. The amount of income doesn’t have to be huge.
2. Track Everything: Meticulously log all your professional expenses. Use a separate credit card or a simple spreadsheet. This includes CME, travel, licenses, dues, subscriptions, and home office expenses.
3. File a Schedule C: At tax time, you or your CPA will file a Schedule C. You list your 1099 income as revenue and all your tracked professional expenses as deductions.

The Trap to Avoid: Don’t think the income has to be substantial. Even earning just $5,000 in 1099 income can allow you to deduct $8,000 in legitimate professional expenses. While this creates a small “business loss” on your Schedule C, that loss can then be used to offset your W-2 income, resulting in a lower overall tax bill. This is a perfectly legal and common strategy for professionals with mixed W-2/1099 income. The key is that the expenses must be legitimately related to your profession, which, for a physician, is an easy standard to meet.

Funding Your Future: The Solo 401(k) Supercharger

Once you have that 1099 side hustle, you unlock more than just expense deductions. You gain access to one of the most powerful retirement savings vehicles available: the Solo 401(k), also known as an Individual 401(k).

As a W-2 employee, you’re likely already contributing to your hospital or clinic’s 401(k) or 403(b), but you’re limited to the “employee” contribution portion (around $24,500 for 2026). A Solo 401(k) allows you, as the owner of your side business, to contribute as both the “employee” and the “employer.”

Here’s how the math works for 2026:

• Employee Contribution: You can contribute 100% of your 1099 net income up to the employee limit ($24,500). Note: This limit is shared across all your 401(k) plans. If you already maxed your W-2 plan, you can’t make another employee contribution here.
• Employer Contribution: This is the magic. Your business can contribute up to 20% of your net self-employment income to the plan. This is separate from and in addition to your employee contribution.

The total combined contributions cannot exceed a set limit, which is around $69,000 for 2026. For an internist earning $50,000 from a medical directorship, you could potentially contribute your employee max at your W-2 job, and then your side business could contribute an additional $10,000 (20% of $50k) into your Solo 401(k), all pre-tax. This is $10,000 of extra tax-deferred savings space you didn’t have before.

The Trap to Avoid: The “pro-rata rule” for backdoor Roth IRAs. Many physicians have old 401(k)s that they rolled into a traditional IRA. If you have any money in a traditional, SEP, or SIMPLE IRA, it complicates your ability to do a clean backdoor Roth IRA conversion. The Solo 401(k) provides a perfect solution. Most Solo 401(k) plans allow you to roll existing IRA funds *into* them. By doing this, you can zero out your traditional IRA balance, clearing the way for tax-free backdoor Roth IRA contributions for the rest of your career.

The Triple-Tax-Advantaged Powerhouse: Your HSA

The Health Savings Account (HSA) is the single most tax-advantaged account in the entire US tax code, yet most physicians misuse it. They treat it like a checking account for medical bills, spending the money as it comes in. This is a massive missed opportunity.

An HSA offers a unique triple tax advantage:

1. Tax-Deductible Contributions: The money you put in is tax-deductible, lowering your AGI. For 2026, a family can contribute up to $8,750.
2. Tax-Free Growth: Unlike a 401(k), the money inside your HSA can be invested and grows completely tax-free.
3. Tax-Free Withdrawals: You can withdraw the money tax-free at any time to pay for qualified medical expenses.

The key is to “stack” these benefits over decades. The optimal strategy is to pay for current medical expenses out-of-pocket with post-tax dollars, allowing your HSA balance to remain invested and grow. Keep every single medical receipt—for copays, prescriptions, dental work, glasses—indefinitely. Scan them and save them to a cloud drive.

Decades from now, in retirement, you will have a massive, tax-free investment account. You can then “reimburse” yourself for all those saved receipts from 20, 30, or 40 years prior. There is no time limit on reimbursement. This effectively turns your HSA into a tax-free retirement account that functions like a Roth IRA, but with an upfront tax deduction as well.

The Trap to Avoid: Not investing the funds. Many default HSA providers keep your money in a low-yield savings account. You must be proactive. Log into your HSA account and ensure the funds are being transferred into low-cost index funds to allow for long-term, tax-free compound growth. Leaving it in cash negates the most powerful feature of the account.

Accelerating Wealth with Real Estate: Cost Segregation Studies

For internists looking to build wealth outside of the stock market, real estate is a common path. But most physician investors miss a strategy that can dramatically improve cash flow and reduce taxes in the early years of ownership: the cost segregation study.

Normally, when you buy a residential rental property, the IRS requires you to depreciate the value of the building over 27.5 years. This provides a small, steady paper loss each year to offset rental income. A cost segregation study is an engineering-based analysis that breaks a property down into its component parts and reclassifies them into shorter depreciation schedules.

Instead of one big “building” depreciating over 27.5 years, the study might identify that 20-30% of the property’s value is actually personal property (5- or 7-year depreciation) or land improvements (15-year depreciation). This includes things like carpeting, cabinetry, appliances, fencing, and paving.

The result? You get to take a much larger depreciation deduction in the first few years of owning the property. This can create a significant “paper loss” that can shelter all of your rental income from taxes and, in some cases, even offset your W-2 income (if you or your spouse qualifies for Real Estate Professional Status, or REPS).

The How-To Sequence for Cost Segregation:

1. Acquire an Investment Property: This strategy is most effective on properties worth $500,000 or more, as the cost of the study (typically a few thousand dollars) needs to be justified by the tax savings.
2. Engage a Reputable Firm: You hire a specialized engineering firm to perform the study. They will analyze the property’s blueprints, components, and costs to create a detailed report breaking down the asset classifications.
3. Provide the Report to Your CPA: Your accountant uses this report to file Form 3115 (Application for Change in Accounting Method) and adjust your depreciation schedule accordingly.

The Trap to Avoid: Thinking it’s only for large commercial buildings. While common in that space, cost segregation is highly effective for single-family rentals, small multi-family buildings, and short-term rentals. For a physician buying a $750,000 rental, a cost segregation study might reclassify $180,000 of the purchase price into 5-year property. Using bonus depreciation, you could potentially deduct a massive portion of that in year one, creating a huge paper loss that could save you over $50,000 in taxes. You can use a real estate investing calculator to model how accelerated depreciation impacts your cash-on-cash return.

Navigating these strategies requires a proactive approach. The tax code is complex, but it contains specific provisions that can be immensely beneficial to an internist’s financial plan. Understanding which ones apply to your unique career path is the first step. The next is modeling their impact. An AI-powered tool like the physician finance hub can help you identify and quantify these opportunities based on your specific income, investments, and practice structure. For complex situations, especially involving business ownership or real estate, partnering with a physician-focused CPA who understands these nuances is essential to ensure you’re not just earning a great income, but keeping it.

Reviewed by Pouyan Golshani, MD, Interventional Radiologist — May 21, 2026