After the DSO Sale: Managing Your Dental Practice Sale Proceeds

You've closed on the DSO deal. The wire has landed. After two decades of building the practice, you're holding more liquid capital than you've ever had in your life — and you're now a W-2 employee of a dental services organization.

This is a genuinely unusual financial position: high-net-worth, but newly income-constrained. The tax shelter you used as a practice owner is gone. Medicare bills you haven't received yet are already in motion. The rollover equity you accepted in the deal is illiquid and may or may not pay off. And you have a non-compete window — typically 2–5 years — during which your options are more limited than they'll eventually be.

The decisions made in the 12–24 months after a practice sale often have more lasting impact than the deal itself. This guide covers what to actually do with the proceeds.

Step one: understand what you actually netted

Before any planning happens, you need a clean post-tax proceeds number. DSO practice sales are almost always structured as asset sales, which means each asset class is taxed differently at the federal level:

• Personal goodwill — taxed as long-term capital gains (if held >1 year). Combined federal rate of 23.8% (20% LTCG + 3.8% NIIT¹) for high earners.
• Enterprise goodwill — same LTCG treatment if allocated as capital gain in the purchase agreement.
• Equipment and furniture — subject to depreciation recapture, taxed as ordinary income at up to 37% federal. If you took 100% bonus depreciation on equipment in prior years, that recapture is often larger than dentists expect.
• Non-compete payments — taxed as ordinary income. The DSO may allocate part of the purchase price here; it's negotiable.
• Rollover equity (DSO units) — no immediate tax event if structured as a tax-deferred exchange under IRC §721 (LLC) or §351 (corporation). Tax is deferred until a future liquidity event.

State taxes add another layer. California, New York, and most other states tax goodwill gains at ordinary income rates — no preferential capital gains rate. A California dentist netting $1.5M in goodwill gain faces 23.8% federal plus up to 13.3% state, for a combined marginal rate approaching 37%.

Our practice sale financial planning guide and practice valuation calculator cover the asset allocation and after-tax math in detail. Start there if you haven't already modeled your specific deal structure.

The IRMAA bill arriving two years later

This surprises almost every dentist who sells. Medicare premiums are calculated based on your MAGI from two years prior. A practice sale in 2024 affects your 2026 Medicare premiums — even if you've retired and your 2026 income is minimal.

The 2026 Part B base premium is $202.90/month.² But at the top IRMAA bracket — which a significant practice sale easily triggers — the premium rises to $689.90/month per person. For a married couple, that's an extra $11,688/year for Part B alone, before Part D drug coverage surcharges.

Two mitigation paths exist:

1. Installment sale — spread the sale proceeds over 2–5 years under IRC §453. This keeps any single year's MAGI below the top IRMAA bracket. DSOs generally resist installment structures on goodwill (they want clean balance sheets), but it's negotiable — especially if you're a high earner pushing for a premium multiple.
2. SSA-44 life-changing event appeal — if your income has genuinely dropped since the high-income year (you've retired or moved to part-time), you can appeal the IRMAA determination prospectively. The sale income from two years ago doesn't disappear, but SSA may reduce the surcharge if your current-year income is substantially lower.

Neither path eliminates IRMAA after the fact, but both are worth modeling pre-close. See our IRMAA and Medicare planning guide for the full bracket table and cost scenarios.

The Roth conversion window

During your practice-owning years, Roth conversions were expensive. You were likely in the 35–37% marginal bracket. Converting $200K of pre-tax 401(k) or IRA funds to Roth meant paying $70K–$74K in federal tax — often not worth it compared to the future value of tax deferral.

The non-compete employment period after a DSO sale often changes this calculus. As a DSO employee — especially in the first year or two if you're transitioning toward part-time or retirement — your W-2 income may drop substantially compared to your practice-owner years. If your annual taxable income falls into the 22–24% bracket range ($100K–$200K for single filers, $200K–$383K for MFJ in 2026), each dollar converted from pre-tax retirement accounts costs significantly less in taxes now than it would have during peak practice years.

The conversion window typically lasts 2–4 years post-sale (during and after the non-compete period, before Social Security and RMDs kick in). Plan the conversion size carefully to avoid triggering a higher IRMAA bracket — since MAGI including conversion income feeds back into Medicare premiums two years later.

Our Roth conversion guide for dentists covers bracket-filling math and the IRMAA interaction in detail.

The retirement plan downgrade: what you lost

This is the most financially significant and least discussed consequence of going from practice owner to DSO employee.

As a solo practice owner with no full-time W-2 employees (or as an S-corp practice owner), your annual retirement contribution capacity looked like this:

As a DSO W-2 employee, your retirement contribution capacity is limited to whatever the DSO's group 401(k) plan allows:

That's a reduction of $160,000–$225,000/year in pre-tax retirement contributions at a point in your career when you're earning real income and still have years to compound. The implication: the large lump sum in your taxable brokerage account has to work harder, and tax-loss harvesting, asset location, and municipal bond strategies become more important than they were when you could shelter most of your income through retirement plans.

The one exception: if you retain any self-employment income after the sale (consulting, expert witness, part-time work outside the DSO non-compete zone), that income can fund a solo 401(k) for the SE income portion. A $50,000 consulting income stream would support approximately $12,500 in additional solo 401(k) employer contributions (25% of net SE income). Not much — but something.

Portfolio construction: investing the proceeds

For most of your career, your practice was your dominant financial asset — often 55–70% of your net worth concentrated in a single illiquid business in a single industry. The DSO sale doesn't eliminate concentration; it converts it from dental practice equity to a mix of cash proceeds plus DSO rollover equity. The diversification only comes if you actually diversify the liquid proceeds.

A few principles for post-sale portfolio construction:

• Don't treat the sale proceeds as a single deployment event. Lump-sum investing into equities immediately after a major life transition creates regret risk if markets drop. A 12–24 month dollar-cost-averaging strategy into equity index funds is reasonable, particularly given that you may not need to draw on the portfolio for years.
• Avoid re-concentrating in healthcare or dental industry stocks. You've just spent 20+ years with your human capital concentrated in dentistry. Your financial capital shouldn't replicate that exposure. Broad index funds are the default until you have a compelling reason to deviate.
• Asset location matters more now. With limited tax-sheltered space (just the DSO 401(k)), your taxable account is larger relative to your total portfolio than it used to be. Municipal bonds, tax-efficient index ETFs, and QSBS-excluded investments deserve consideration in taxable accounts. Tax-inefficient assets (REITs, corporate bonds, high-yield) belong in the 401(k).
• Build a cash reserve for IRMAA and estimated taxes. If your non-compete income plus investment income will generate meaningful quarterly estimated tax liability, underfunding this creates penalty exposure (IRC §6654). Size your short-term cash position to cover a full year's estimated taxes plus the IRMAA surcharge you know is coming.

See our dentist investment portfolio guide for a full account hierarchy and asset location framework.

Rollover equity: treat it as a lottery ticket, not a plan

Most DSO transactions include a rollover equity component — typically 20–30% of the deal value exchanged for LLC units or corporate stock in the DSO rather than cash. The pitch: you participate in the DSO's eventual sale or IPO at a higher multiple than you sold your practice at.

The reality is more uncertain. DSO rollover equity is illiquid (no public market, transfer restrictions typically for 3–7 years), subordinate (liquidation preferences mean institutional investors get paid first), and concentrated (your financial upside depends entirely on one company's growth and exit timing). DSO QSBS ineligibility (IRC §1202(e)(3) excludes health services companies) means the 50–100% federal exclusion available to QSBS investors doesn't apply.

This doesn't mean rollover equity is bad. A well-structured transaction with a financially strong DSO can generate a second liquidity event that substantially increases your total take. But it shouldn't be underwritten as retirement income. The right mental model: it's speculative upside on top of the cash you already secured. Plan your retirement income as if the rollover equity pays zero.

Our DSO rollover equity guide covers liquidation waterfall mechanics, QSBS ineligibility, and what to negotiate at signing.

Estate plan refresh

Your estate plan probably hasn't been updated since you set it up during your practice acquisition years. The asset mix has now changed dramatically: illiquid practice equity has become liquid investable assets. This affects several estate planning levers:

• Annual gifting — with liquid assets, the $19,000/recipient annual gift exclusion (2026) is actually usable in a way it wasn't when your wealth was tied up in the practice. Start the gifting strategy if your estate is large enough to warrant it.
• OBBBA estate exemption — the OBBBA permanently set the federal estate/gift/GST exemption at $15M per person ($30M per married couple). If your estate is under $30M (which it likely is after a single practice sale), the estate tax urgency is lower than it was under the pre-OBBBA sunset risk. Still worth reviewing.
• Buy-sell agreement — the buy-sell that funded your business partners' buyout is now irrelevant. The life insurance it funded may still be in force. Review whether that coverage should be converted, retained, or surrendered.
• Beneficiary designations — update IRA and 401(k) beneficiaries. If your old plan was "leave the practice to family," that plan no longer exists. A financial advisor and estate attorney should review your whole picture.

When to hire a fee-only financial advisor

The ideal time to engage a financial advisor specializing in dental practice sales is 12–18 months before the deal closes — early enough to structure the asset allocation in the purchase agreement, plan the installment sale analysis, and begin Roth conversions during the pre-sale negotiation period.

If the deal has already closed, the next best time is now. The most consequential financial decisions — Roth conversion sizing, IRMAA SSA-44 appeals, rollover equity monitoring, portfolio construction — all play out in the first 3 years post-sale. A fee-only advisor (paid by you, not by product commissions) who has experience with DSO transactions understands both the deal-side mechanics and the post-sale planning. A generalist investment advisor typically understands neither.