Real estate for oncologists: practice property + personal portfolio

Oncology practice owners often own their building. Here’s how to layer that with a personal real estate portfolio.

For many oncologists, particularly those in private practice, the first major real estate investment isn’t a personal one—it’s the clinic itself. Owning the building that houses your practice is a classic strategy for building long-term wealth and operational stability. It converts a major expense (rent) into an asset that appreciates and generates equity. But this is just the first step. The real financial leverage comes from treating your practice property as the cornerstone of a much broader, more sophisticated personal real estate strategy. The tax code, particularly after the Tax Cuts and Jobs Act (TCJA), offers physicians powerful tools to build wealth through real estate, but they require active planning.

This isn’t about flipping houses. It’s about using specific, rules-based strategies to generate tax-advantaged income, create massive “paper losses” to offset your high W-2 or 1099 earnings, and build a durable asset base outside of the stock market and your day job. We’ll walk through the key plays, from maximizing deductions on your practice to leveraging a personal portfolio to dramatically reduce your tax bill. For a broader look at financial and clinical tools, you can explore the complete oncology resources hub on GigHz.

The Foundation: Your Practice Building and the 199A Deduction

If you own your practice, or are a partner in a group that does, one of the most significant tax benefits is the Qualified Business Income (QBI) deduction, established under Section 199A. This allows owners of pass-through entities (like an S-corp or LLC) to deduct up to 20% of their qualified business income. However, there’s a critical catch for physicians: medicine is classified as a “Specified Service Trade or Business” (SSTB).

This SSTB designation means the 20% deduction begins to phase out and eventually 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. Many oncologists, especially successful practice owners, will find themselves at or above this limit.

This is where strategic AGI (Adjusted Gross Income) management becomes crucial. The goal is to legally reduce your taxable income to stay under the phase-out cliff and preserve a deduction that could be worth tens of thousands of dollars.

Here’s the how-to sequence:

1. Maximize Pre-Tax Retirement Contributions: This is the first and easiest lever. Max out your 401(k) or other workplace retirement plan. Every dollar contributed reduces your AGI dollar-for-dollar.
2. Utilize a Health Savings Account (HSA): If you have a high-deductible health plan, max out your family HSA contribution (projected to be $8,750 in 2026). This is another direct reduction to your AGI.
3. Consider Charitable Bunching: Instead of making smaller annual donations, “bunch” several years’ worth of charitable giving into a single year using a Donor-Advised Fund (DAF). A $50,000 contribution to a DAF in one year can create a large itemized deduction that significantly lowers your AGI, potentially pulling you back under the 199A threshold for that year.

Planning Trap to Avoid: The most common mistake is failing to coordinate with your spouse. The 199A income limit for married couples applies to your *combined* taxable income. If your spouse also has a high income, you must plan your deductions together. A surprise bonus or capital gain on their side could inadvertently push you over the cliff, eliminating the QBI deduction for your practice income entirely.

Accelerating Wealth with Cost Segregation Studies

Once you move beyond your practice property into personal real estate investing—whether it’s a small multi-family building, a medical office building, or a short-term rental—the single most powerful tool for tax mitigation is a cost segregation study.

Normally, the IRS requires you to depreciate a residential rental property over 27.5 years and a commercial property over 39 years. This results in a relatively small annual deduction. A cost segregation study is an engineering-based analysis that breaks a property down into its components and reclassifies them into shorter depreciation schedules.

Here’s how it works: An engineering firm analyzes your property and identifies assets that aren’t part of the building’s core structure.

• 5-Year Property: Carpeting, specialty lighting, certain appliances, cabinetry.
• 7-Year Property: Office furniture.
• 15-Year Property: Land improvements like paving, landscaping, and fencing.

By reclassifying, say, 25% of a $1 million commercial property’s value ($250,000) from a 39-year schedule to a 5-year schedule, you can deduct that entire amount over just five years. Better yet, under current bonus depreciation rules (which are phasing down but still substantial), you may be able to deduct a large portion of that reclassified amount in the very first year.

This strategy generates a massive “paper loss.” The property might be cash-flowing positively every month, but for tax purposes, it shows a significant loss. For example, a $1M property that cash flows $20,000 a year could generate a paper loss of $150,000 in year one after a cost segregation study. You can model out different scenarios using a real estate investing calculator to see how depreciation impacts your net returns.

Planning Trap to Avoid: The trap here is thinking these losses can automatically offset your W-2 income. By default, rental losses are considered “passive” under IRS §469 and can only offset passive gains (e.g., from other rentals). To use these losses against your active physician income, you or your spouse need to qualify for Real Estate Professional Status (REPS), which we’ll cover next.

Unlocking Paper Losses: The Spouse REPS Strategy

Real Estate Professional Status (REPS) is the holy grail for high-income physician investors. It’s the key that turns those large, passive paper losses from cost segregation into *non-passive* losses that can directly offset your active W-2 or 1099 income from medicine.

Most practicing oncologists will never qualify for REPS themselves; the time commitment is too high. The classic strategy involves the non-physician (or lower-earning) spouse qualifying. There is no exam or certification. Qualification is based purely on time spent.

Here’s the how-to sequence for the spouse to qualify for REPS:

1. The 750-Hour Test: The spouse must spend more than 750 hours during the tax year on real estate trades or businesses in which they materially participate. This includes activities like sourcing deals, managing properties, communicating with tenants and contractors, and overseeing renovations.
2. The More-Than-Half Test: The time spent on real estate activities must constitute more than 50% of their total working time for the year. This is why it’s difficult for a practicing physician but feasible for a spouse who works part-time or is primarily focused on the real estate portfolio.
3. Material Participation: The spouse must “materially participate” in the rental activities. The easiest way to meet this is to self-manage the properties, spending more than 100 hours on them (and more than anyone else, like a property manager).
4. Contemporaneous Log: You MUST keep a detailed, contemporaneous log of all hours and activities. A simple spreadsheet with date, activity description, and time spent is sufficient. An IRS audit will ask for this log, and you cannot recreate it from memory years later.

If your spouse qualifies for REPS and you file your taxes jointly, the six-figure paper loss from your rental portfolio can be used to wipe out a corresponding amount of your taxable income from the hospital or clinic. This is one of the most powerful tax reduction strategies available to physicians.

Planning Trap to Avoid: Do not “estimate” the hours. The IRS is notoriously strict on this. If audited, they will scrutinize your time log. Vague entries like “real estate work” are insufficient. Be specific: “2.5 hours: Called three plumbers for quotes on Unit B leak, drove to property to meet contractor, documented repair with photos.”

The 1099 Side Gig: Rescuing Your Lost Deductions

For the many oncologists who are W-2 employees of a hospital or large health system, the TCJA was a major blow. It eliminated the ability to deduct unreimbursed business expenses. All the money you spend on state licenses, DEA registration, board exams, CME travel, scrubs, and home office equipment is no longer deductible against your W-2 salary.

The solution is to create a small amount of 1099 (independent contractor) income. This establishes a Schedule C (Profit or Loss from Business), which re-opens the door to deducting all those professional expenses.

Here’s the how-to sequence:

1. Generate 1099 Income: Pick up a few telemedicine shifts, do some expert witness work, take on a medical directorship, or engage in consulting. Even a few thousand dollars of 1099 income is enough to establish the business.
2. Open a Schedule C: When you file your taxes, you’ll file a Schedule C for this side business.
3. Deduct Your Professional Expenses: Now, all those ordinary and necessary business expenses become deductible against your 1099 income. Your $1,500 CME conference, your $895 DEA fee, your state license renewals—they can all be used to offset your side-gig earnings. The portion of your home used exclusively for this work can be claimed as a home office deduction.

This strategy often results in a net loss on your Schedule C, which can then further reduce your overall taxable income. Even better, this 1099 income makes you eligible to open a Solo 401(k), allowing you to contribute significantly more to tax-deferred retirement accounts—up to a projected $69,000 in 2026, depending on your side income.

Planning Trap to Avoid: Do not mix personal and business expenses. You must be able to prove that the expenses you are deducting are directly related to your 1099 work. If you use your cell phone 50% for your telemedicine gig and 50% for personal use, you can only deduct 50% of the bill.

The Ultimate Stealth Shelter: Triple-Stacking Your HSA

While not directly a real estate strategy, the Health Savings Account (HSA) is such a powerful wealth-building tool for physicians that it must be part of any comprehensive financial plan. It offers a unique triple tax advantage: contributions are tax-deductible, the money grows tax-free, and withdrawals for qualified medical expenses are tax-free.

Most people use their HSA like a checking account to pay for current medical bills. This is a mistake. The optimal strategy is to treat it as a super-charged retirement account.

Here’s the how-to sequence for the “triple stack”:

1. Max It Out: Contribute the maximum family amount every year (projected to be $8,750 in 2026). This is a direct, above-the-line deduction that lowers your AGI.
2. Invest It: As soon as the funds are in your HSA, invest them in low-cost index funds. Do not let the cash sit idle. The goal is long-term, tax-free growth.
3. Pay Out-of-Pocket and Save Receipts: Pay for all current medical expenses with a credit card or cash, *not* with your HSA funds. Scan and save every single medical receipt—for copays, prescriptions, dental work, everything—in a secure digital folder.

Decades from now, in retirement, you will have a massive, tax-free investment account. You can then “reimburse” yourself for all those accumulated medical expenses from the past 20 or 30 years by withdrawing from the HSA completely tax-free. There is no time limit on reimbursement. This effectively turns your HSA into a tax-free emergency fund or a source of tax-free income in retirement.

Planning Trap to Avoid: Losing the receipts. The entire strategy hinges on your ability to produce receipts for the qualified medical expenses against which you are making tax-free withdrawals in retirement. Use a cloud storage service and have a backup. A lost receipt is a lost tax-free withdrawal.

Integrating these strategies—from optimizing your practice real estate with the 199A deduction to building a personal portfolio supercharged by cost segregation and REPS—allows you to take active control of your financial future. It shifts your focus from simply earning a high income to efficiently building and retaining wealth. These are not loopholes; they are explicit, rules-based incentives designed to encourage investment. By understanding and applying them, you can build a powerful financial engine that works for you long after you’ve hung up your white coat.

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