Tax savings for interventional radiologists: ASC equity changes everything

ASC equity income is taxed differently than W-2 dictation income. Here’s how to structure ownership to maximize after-tax returns.

For most of us in Interventional Radiology, the career path is straightforward: residency, fellowship, then a W-2 job. Your income is high, but so is your tax bill. You max out your 401(k), maybe do a backdoor Roth IRA, and call it a day. But the real wealth-building, and the most powerful tax savings, happens when you move from being just an employee to being an owner. Owning equity in an Ambulatory Surgery Center (ASC), Office-Based Lab (OBL), or outpatient imaging center completely changes the financial game. The income isn’t just salary; it’s a mix of distributions, depreciation pass-throughs, and capital gains that are taxed far more favorably. This isn’t about finding a few extra deductions; it’s about fundamentally restructuring your financial life. For more foundational resources, the IR free tools hub has a collection of guides and calculators tailored to our specialty.

The Power of Paper Losses: Section 179 & Bonus Depreciation on Heavy Iron

The single biggest tax advantage of owning an outpatient center is the ability to aggressively depreciate high-cost equipment. Our field runs on capital-intensive “heavy iron”—C-arms, angio suites, MRI and CT scanners. While the cash outlay is significant, the tax code provides a massive immediate benefit through Section 179 and bonus depreciation.

Here’s how it works. Normally, you’d have to depreciate a $2 million angio suite over many years. But the tax code allows you to accelerate this.

• Section 179 Deduction: This allows you to immediately expense the cost of qualifying equipment. For 2026, the limit is a substantial $1.16 million. This deduction is designed for small and medium-sized businesses to incentivize investment.
• Bonus Depreciation: After you’ve used your Section 179 allowance, bonus depreciation lets you deduct a percentage of the remaining cost in the first year. For assets placed in service before 2027, this is still a very generous percentage (it’s currently phasing down, so timing matters).

Let’s run a concrete example. Your physician partnership buys a new angio suite for $2 million.

1. You immediately expense $1.16 million using the Section 179 deduction.
2. The remaining cost is $840,000 ($2M – $1.16M). You can then apply bonus depreciation to this amount. Let’s assume the bonus depreciation rate is 60% for assets placed in service in 2026. That’s another $504,000 deduction ($840,000 * 0.60).
3. In total, your partnership gets a $1,664,000 tax deduction in the first year on a $2 million piece of equipment. If you are a 25% partner, that’s a $416,000 “paper loss” that passes through to your personal tax return via your K-1, directly offsetting your clinical and other income.

The Planning Trap: Many physicians don’t realize that the Section 179 deduction cannot create a business loss; it can only reduce your business income to zero. However, bonus depreciation can create a net operating loss (NOL), which you can then use to offset other income. This is a critical distinction. If your new center has little income in its first year, relying solely on Section 179 might limit your deduction. A savvy CPA will model the optimal mix of Section 179 and bonus depreciation to maximize the pass-through loss you can use immediately.

The QBI Workaround: Using an Equipment Leasing Company

Most of us lost a valuable tax break called the Qualified Business Income (QBI) deduction, found in Section 199A of the tax code. It allows owners of pass-through businesses (like LLCs and S-Corps) to deduct up to 20% of their business income. The problem? Medicine is classified as a “Specified Service Trade or Business” (SSTB). Once your taxable income exceeds the threshold (around $787,000 for joint filers in 2026), the deduction is completely phased out. For a successful IR, that means you get zero QBI benefit from your clinical practice income.

However, there’s a sophisticated structuring strategy that can help you reclaim it. You can form a separate legal entity—let’s call it “IR Equipment Leasing, LLC”—that owns all the expensive medical equipment. This LLC then leases the angio suite, ultrasound machines, and other gear to your clinical practice (“IR Practice, LLC”) at a fair market rate.

Here’s the key: a pure equipment rental business is generally not considered an SSTB. This means the net rental income generated by the leasing company may be eligible for the 20% QBI deduction, even if your income is well above the SSTB phase-out threshold. The rental income your practice pays is a deductible business expense, and the income received by the leasing company is potentially QBI-eligible.

The Planning Trap: This is not a DIY strategy. The IRS has strict “aggregation” rules (§1.199A-4) that govern when related businesses can be grouped together. To make this work, the entities must have a certain level of common ownership, but you must also be able to prove that the leasing company is a legitimate, separate business with formal lease agreements and market-rate rents. If it looks like a sham to simply circumvent the SSTB rules, the IRS can disallow it. This structure must be designed and maintained by a physician-focused CPA who understands the specific anti-abuse provisions.

K-1s and Pass-Throughs: The Economics of OBL Ownership

When you own a piece of an OBL or imaging center, your financial life gets more complex—and more rewarding—than a simple W-2. Instead of a paycheck, you receive a Schedule K-1 at the end of the year. This document is your share of the partnership’s income, deductions, credits, and other financial items. Most of us saw our first K-1 and had no idea what to do with it.

The K-1 is where the magic of depreciation happens. The massive “paper loss” from your Section 179 and bonus depreciation on new equipment flows directly to you on your K-1. In the early years of a new center, it’s common for physician-owners to receive a K-1 showing a significant loss for tax purposes, even if the center was cash-flow positive. This pass-through loss can be used to offset your other income, including your 1099 clinical income or your spouse’s W-2 salary, resulting in a huge reduction in your overall tax bill.

This is a fundamental shift in mindset. You’re no longer just earning and paying tax. You’re investing in assets that generate both cash flow and tax shelter simultaneously. The goal is to generate high after-tax returns, and the K-1 is the scorecard. Understanding how distributions (cash in your pocket) differ from taxable income (what you report to the IRS) is the first step to thinking like an owner.

The Planning Trap: The “at-risk” and “passive activity” rules can limit your ability to deduct these pass-through losses. In general, you can only deduct losses up to the amount you have “at-risk” in the business (your cash contribution plus certain loans). Furthermore, if you are a passive investor and don’t “materially participate” in the business operations, your losses may be classified as passive and can only offset passive income, not your active clinical income. For most physician-owners who are actively involved in their OBL, this isn’t an issue, but for silent partners, it’s a critical limitation to understand upfront.

Front-Loading Deductions with Cost Segregation

If your partnership owns the building that houses your imaging center or OBL, there’s another powerful depreciation strategy that works in tandem with equipment depreciation: a cost segregation study.

When you buy or build a commercial property, the IRS typically makes you depreciate the entire structure over 39 years. A $3 million building would generate a deduction of about $77,000 per year. A cost segregation study is an engineering-based analysis that breaks the building down into its constituent components and reclassifies them into shorter depreciation schedules.

An engineering firm will identify parts of the property that aren’t “the building” itself:

• 5-Year Property: Carpeting, specialty electrical wiring for your angio suite, decorative lighting, cabinetry.
• 7-Year Property: Office furniture and fixtures.
• 15-Year Property: Land improvements like parking lots, landscaping, and sidewalks.

It’s common for a cost segregation study on an imaging facility to reclassify 25-30% of the building’s cost into these shorter-lived categories. On a $3 million building, that’s $750,000 to $900,000 of assets now eligible for 5, 7, or 15-year depreciation instead of 39. Even better, this reclassified property is often eligible for 100% bonus depreciation in the first year. This can pull hundreds of thousands of dollars of tax deductions from the future into Year 1, creating another massive paper loss to offset your income.

The Planning Trap: The biggest mistake is waiting. You get the maximum benefit by performing the study in the year you purchase or construct the building. While you can do a “look-back” study on a property you’ve owned for years, the process is more complex, and you miss the opportunity to use those deductions when your income is highest. The second trap is using a cheap, non-engineering-based firm. The IRS requires these studies to be based on credible engineering analysis; a low-quality report could be disallowed under audit, forcing you to pay back years of taxes with interest and penalties.

The Ultimate Tax Shelter: Real Estate Professional Status (REPS) for a Spouse

This is one of the most powerful tax strategies available to high-income physician families, and it ties directly into real estate ownership, whether it’s your medical office building or residential rentals. Under the IRS §469 passive activity rules, losses from rental real estate are generally considered “passive.” This means you can’t use them to offset “active” income, like your W-2 or 1099 earnings. They just carry forward to offset future passive gains.

Real Estate Professional Status (REPS) is the exception that blows this rule apart. If one spouse qualifies as a real estate professional and you file your taxes jointly, your rental losses become non-passive. They can be used to directly offset the physician’s high clinical income, dollar for dollar.

To qualify for REPS, a spouse must meet two tests during the tax year:

1. The 750-Hour Test: They must spend more than 750 hours on real estate trade or business activities (developing, managing, leasing, etc.).
2. The More-Than-Half Test: Those hours must constitute more than 50% of their total working time during the year.

This is a perfect fit for a couple where one spouse is a high-earning IR and the other works part-time, is a stay-at-home parent, or is looking for a career change. They can manage your medical office building and a portfolio of rental properties. By combining REPS with a cost segregation study on those properties, you can generate enormous paper losses that can wipe out a huge portion of the physician’s clinical income. A cost seg study on a $1 million rental portfolio could easily generate a $200,000+ paper loss in Year 1, which, thanks to REPS, could save a high-income family $70,000-$80,000 in federal taxes. You can model out different scenarios with a real estate investing calculator to see the potential impact.

The Planning Trap: Documentation is everything. There is no formal license or certification for REPS. Qualification is determined by your actions and your records. The IRS knows this is a valuable tax break and will scrutinize it during an audit. You must keep a contemporaneous log of all time spent on real estate activities—every phone call, email, site visit, and meeting. Simply owning property is not enough; you must prove material participation and meet the hour requirements with detailed records.

Shifting from a W-2 employee to an equity partner in an ASC or OBL requires a completely different approach to your finances. The strategies are more complex, but the potential for building wealth and dramatically reducing your tax burden is immense. These concepts—accelerated depreciation, entity structuring, and leveraging real estate—are the building blocks. The next step is to see how they apply to your specific financial situation. The physician finance hub is an AI-powered tool designed to analyze your numbers and surface these and other personalized strategies. If you’re considering a new outpatient venture or want to optimize an existing one, it’s time to move beyond basic financial planning. To explore these structures in detail for your practice, you can talk to GigHz about your ASC structure.

Free GigHz Tools That Pair With This Article

Three free tools that complement the material above:

• ACR Appropriateness Criteria Lookup — Type an indication or clinical scenario in plain language and get the imaging studies the ACR rates for it, with adult and pediatric radiation levels. Built directly from 297 ACR topics, 1,336 clinical variants, and 15,823 procedure ratings.
• GigHz Imaging Protocol Library — A searchable library of 131 imaging protocols with the physics specs surfaced and the matching ACR Appropriateness Criteria alongside. Plain-English narratives readable in 60 seconds, organized by modality.
• GigHz Radiation Dose Calculator — Pick the imaging studies a patient has had and see total dose in millisieverts (mSv) with comparisons to natural background radiation, transatlantic flights, and chest X-rays. Useful for shared decision-making.

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