Tax planning for OB/GYN physicians

OB/GYN income mixes obstetrics, GYN E/M, in-office procedures, and surgery. Here’s the tax structure.

As an OB/GYN, your financial life is a complex blend of high W-2 income, potential partnership distributions, and unique practice-related investment opportunities. The default path—maxing out a 401(k) and paying the rest to the IRS—leaves a substantial amount of your earnings on the table. Most of us learn this the hard way, after a few years of seeing six-figure tax bills and realizing standard financial advice wasn’t built for our career path.

The strategies that create real wealth and reduce your tax burden are structural. They involve how you own your practice, the building you work in, and the retirement accounts you establish. This isn’t about finding a few extra deductions; it’s about building a more efficient financial machine around your clinical work. This article breaks down the key advanced strategies specific to a high-earning surgical specialist. For a broader look at financial tools and benchmarks, the OB/GYN free tools hub provides additional resources.

The 199A QBI Deduction: The Bad News High Earners Must Face First

Let’s start with the strategy you likely can’t use. The Qualified Business Income (QBI) deduction, created by Section 199A of the tax code, was designed to give pass-through businesses (like many medical practices) a 20% deduction on their income. It sounds great, but there’s a critical catch for physicians.

Medicine is classified as a “Specified Service Trade or Business” (SSTB). For SSTBs, the QBI deduction is phased out and ultimately eliminated 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. As a partner in a successful OB/GYN group, your income will almost certainly blow past this limit.

Here’s the practical takeaway: Don’t build your tax plan around the 199A deduction. When I review a physician’s financial plan and see a major assumption built on QBI, it’s an immediate red flag. It tells me the planner may not understand the specific limitations that apply to high-income clinicians. The reality is, because QBI is off the table, we are forced to be more creative and strategic. The rest of this article focuses on the powerful alternatives that remain available to us.

The Planning Trap: The most common mistake is assuming that because your practice is a pass-through entity (like an S-Corp or LLC), you automatically qualify. You don’t. The SSTB classification is the key, and it effectively disqualifies most successful surgeons, cardiologists, and OB/GYNs from this benefit. Acknowledging this fact is the first step toward a realistic and effective tax strategy.

ASC Ownership and K-1 Distribution Tax Structuring

For many OB/GYNs in private practice, a significant wealth-building opportunity comes from owning a piece of an Ambulatory Surgery Center (ASC). This ownership stake generates income that flows to you not as a W-2 salary, but as a partnership distribution reported on a Schedule K-1. Understanding how this works is critical to managing your tax liability.

First, the income from the ASC is typically taxed at more favorable rates than W-2 income, as it isn’t subject to FICA taxes (Social Security and Medicare). However, the real planning opportunities lie in the details of your participation and the structure of your investment.

Here’s how it works:

• Active vs. Passive Participation: The IRS cares whether you are an “active” or “passive” investor in the ASC. Under the passive activity rules of IRC §469, losses from passive activities can generally only offset gains from other passive activities. However, if you “materially participate” in the ASC’s operations (which many physician-owners do), your participation may be considered active. This is a huge advantage. If the ASC has a paper loss in a given year (e.g., due to large equipment purchases and accelerated depreciation), active participation allows you to use that loss to offset your other active income, including your clinical salary.
• Basis and At-Risk Limits: Your ability to deduct losses is limited by your “basis” in the partnership—essentially, your financial stake. This includes the cash you invested plus your share of any partnership debt. If you buy in with a leveraged (debt-financed) structure, your basis increases, potentially allowing for larger loss deductions upfront.
• Layered Planning: The ideal structure involves taking “reasonable compensation” as a W-2 salary from your primary surgical practice and receiving the profits from the ASC as K-1 distributions. This combination optimizes your tax treatment across different income streams.

The Planning Trap: A common pitfall is failing to properly document material participation. If you are audited, the IRS will want to see proof that you were involved in the ASC’s management, not just a silent investor. This can be documented through meeting minutes, management committee participation, and records of time spent on ASC business. Without this, any ASC losses could be reclassified as passive and become far less valuable for offsetting your high clinical income.

Owning Your Practice’s Real Estate in a Separate LLC

One of the most powerful and time-tested tax strategies for physician partners is to own the building where your practice operates. The key is to structure this correctly: you and your partners form a separate real estate holding company, typically an LLC, to buy the property. This LLC then leases the building back to your medical practice at a fair market rate.

This simple separation creates a profound tax advantage. Here’s the sequence:

1. The Medical Practice: Your OB/GYN practice pays rent to the real estate LLC. This rent is a fully deductible business expense, reducing the practice’s taxable income.
2. The Real Estate LLC: The LLC receives this rent as income. However, this income is offset by the expenses of owning the building: mortgage interest, property taxes, insurance, and—most importantly—depreciation.
3. The Depreciation Power-Up: Commercial property is typically depreciated over 39 years, creating a steady, predictable “paper loss” each year. This loss flows through the LLC to the partners, sheltering the rental income from tax. Often, the depreciation is large enough to create a net loss for the LLC.

This is where the strategy becomes truly potent, especially for married physicians. If your spouse can qualify for Real Estate Professional Status (REPS), those paper losses from the LLC are no longer considered “passive.” This means they can be used to offset your high W-2 or K-1 income from practicing medicine. To qualify for REPS, a spouse must spend more than 750 hours per year and more than 50% of their total working time on real estate activities, all documented with a contemporaneous time log. For a non-clinical or part-time working spouse, this is often an achievable goal that can slash a high-earning couple’s tax bill.

The Planning Trap: Setting the lease rate incorrectly. The rent paid by the practice to the LLC must be at a “fair market rate.” If you set the rent artificially high to shift more profit into the real estate entity, the IRS can disallow the deduction. A formal appraisal or a commercial real estate broker’s opinion of value can establish an arm’s-length rental rate and defend it upon audit.

A Deeper Dive: Unleashing Depreciation with Cost Segregation Studies

While standard depreciation is powerful, a cost segregation study takes it to the next level. Most physicians assume that when they buy a medical office building, the entire structure must be depreciated over 39 years. This is incorrect and leaves a massive tax deduction on the table.

A cost segregation study is an engineering-based analysis that dissects the components of your building and reclassifies them into shorter depreciation schedules. Instead of treating the building as one monolithic asset, it identifies components that qualify as personal property or land improvements.

Here’s how it works:

• 39-Year Property: The core structure of the building (foundation, walls, roof).
• 15-Year Property: Land improvements like parking lots, landscaping, and exterior signage.
• 7-Year Property: Office furniture and certain equipment.
• 5-Year Property: Carpeting, decorative lighting, cabinetry, and specialty electrical or plumbing for medical equipment.

By reclassifying, say, 25% of a $2 million building’s cost from a 39-year schedule to 5- and 15-year schedules, you can dramatically accelerate your depreciation deductions. Instead of a small deduction spread over four decades, you get a massive deduction in the first few years of ownership. When combined with bonus depreciation rules (which in some years have allowed for 100% first-year write-offs of shorter-lived assets), a cost segregation study can generate a paper loss large enough to wipe out all the rental income and potentially create a significant surplus loss to be used elsewhere (especially if you have REPS).

The Planning Trap: Using a cheap, non-engineering-based online service. The IRS requires these studies to be based on credible engineering principles. A low-quality study that misclassifies assets can be thrown out during an audit, leading to back taxes and penalties. It’s crucial to use a reputable firm that performs a detailed, site-specific analysis. This is a sophisticated strategy that requires a physician-focused CPA who understands how to integrate the study’s findings into your overall tax plan.

Cash Balance & Defined Benefit Plans: The Ultimate Pre-Tax Shelter

You already know about your 401(k). But for a high-earning OB/GYN partner in their 40s, 50s, or 60s, a 401(k) is just the beginning. The most powerful pre-tax retirement savings vehicle available is a cash balance plan, which is a type of defined benefit pension plan.

Think of it as a supercharged, tax-deductible savings account. While a 401(k) limits your total contributions (employee and employer) to around $76,500 for 2026 (including catch-up), a cash balance plan allows for much larger, age-dependent contributions. It’s not uncommon for a physician in their 50s to contribute an additional $150,000, $200,000, or even more per year, all of it tax-deductible.

Here’s a concrete example:

• An OB/GYN partner, age 52, earns $700,000.
• She contributes the maximum to her practice’s 401(k) with profit sharing: ~$76,500.
• The practice also sponsors a cash balance plan. Based on her age and income, her contribution limit to this plan is an additional $180,000.
• Total tax-deductible savings: $256,500.

At a 40% marginal federal and state tax rate, this strategy alone saves her over $102,000 in taxes for that year. The money grows tax-deferred in a professionally managed account until retirement. This is how you aggressively reduce your taxable income while simultaneously turbocharging your retirement savings during your peak earning years.

The Planning Trap: These plans are more complex and less flexible than a 401(k). Contributions are mandatory for a given plan year, and the plan is subject to more stringent ERISA regulations and actuarial calculations. It’s a significant commitment that works best for practices with stable, high profitability. You can’t simply decide to skip a contribution one year if cash flow is tight. Setting one up requires specialized advisors who understand the nuances of plan design for physician groups.

The transition from resident to attending, and then from employee to partner, brings a series of financial shocks. The biggest is often the realization that your tax bill has become one of your largest annual expenses. By implementing structural strategies around real estate, advanced retirement plans, and ASC ownership, you can transform that liability into a powerful engine for building long-term, tax-efficient wealth.

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