DSO roll-ups and private equity are paying real multiples for California medical and dental practices right now. What they don't put in the LOI is what the IRS and Sacramento take out of that number the year it closes. Here's the math, and the one legal lever that applies to it.
Practice sales — especially to a DSO (dental support organization) or private equity-backed platform — are typically structured with the bulk of the purchase price allocated to goodwill and patient records, since a service business built on the doctor's reputation and patient relationships has little in the way of hard assets to allocate against. Equipment and instruments are usually a small fraction of the total price.
Example: a solo dental practice sells to a DSO for $3.2M. Maybe $300,000 is equipment (with some recapture at ordinary rates), and the remaining $2.9M is goodwill, taxed at long-term capital gains rates. Taken all in one closing year, that $2.9M hits the top federal LTCG rate of 20%, the 3.8% NIIT, and California's up to 13.3% — combined exposure often 35-37% on that slice alone.
Total tax across the deal frequently runs past $1M on a $3.2M practice sale — and that's before accounting for any rollover equity the DSO requires you to take instead of cash, which is a separate conversation entirely.
Equipment recapture is recognized in the sale year regardless of structure — that part of the bill doesn't move. But the goodwill portion, which is usually 80-90% of a practice sale's purchase price, is squarely eligible for IRC §453 installment sale treatment. Instead of the full $2.9M landing in one tax year, a Structured Installment Sale spreads recognition across a schedule of years — 5, 10, 15 — so more of it fills the 0% and 15% brackets instead of overflowing the top bracket, NIIT, and California's rate simultaneously.
On the $2.9M goodwill example, spreading recognition over 10 years instead of one can move a substantial share of that gain from a blended rate in the mid-30s down toward 15-20% — commonly mid-six figures kept that would otherwise go straight to tax in the closing year.
DSO deals already come with enough complexity — earnouts, rollover equity requirements, multi-year employment agreements. A Structured Installment Sale is different from all of those: the DSO or buyer still pays 100% cash for the goodwill portion at closing. You are not carrying a note, and this has nothing to do with the earnout or equity rollover terms in the deal — those are negotiated separately with the buyer. The cash payment obligation on the goodwill portion is instead assigned to a licensed third party, which funds an annuity through an A-rated carrier, and you become the payee of a defined schedule.
This is worth being precise about with your deal attorney: a §453 structure applies to the straight cash consideration for goodwill, not to rollover equity or contingent earnout payments, which are taxed under their own separate rules.
Many physicians and dentists sell to a DSO in the years leading up to retirement, often while still working reduced clinical hours under an employment agreement with the buyer. That makes the timing of the §453 schedule worth coordinating with your actual retirement date — payments can be structured to start ramping up income right around when your W-2 or 1099 income from the buyer winds down, rather than stacking a large payment on top of your peak earning years.
As with any §453 structure, this must be papered before the definitive purchase agreement is signed with the DSO or buyer — not after the deal has already been documented with fixed cash terms at closing.
Group practices with two, three, or more partners often sell to the same DSO in a single transaction, but each partner is usually at a different point in their career — one ready to retire fully, another planning to keep working clinically for the buyer for another five years, another somewhere in between. A §453 structure is set up per seller, not as a single shared schedule, so each partner can choose a payout length and start date that matches their own plans rather than being forced into identical terms just because the practice sold as one deal.
This is worth raising early with the other partners and the deal attorney, since it affects how the purchase agreement allocates and documents each partner's consideration — much easier to build in from the LOI stage than to retrofit once the definitive agreement is drafted around a single uniform payment structure.
No. A Structured Installment Sale applies to the cash portion of the sale allocated to goodwill. Rollover equity and earnout payments are separate consideration types taxed under their own rules and negotiated directly with the buyer.
Typically the goodwill and patient-record allocation, which is usually the majority of a practice sale's purchase price. Equipment with depreciation recapture is generally taxed in the sale year regardless of structure.
No. The buyer pays 100% cash at closing for the qualifying portion. A licensed third party assumes the payment obligation and funds an annuity through an A-rated carrier — you're not carrying paper on the practice or exposed to the buyer's post-sale performance.
Yes — the payment schedule is flexible and can be structured to ramp up around when your clinical income from the buyer's employment agreement winds down, rather than stacking on top of peak earning years.
Not yet, if the definitive purchase agreement hasn't been signed. Once that document locks in fixed cash terms at closing, the structure generally can't be added retroactively — so the LOI stage is the right time to start this conversation with your CPA and deal attorney.
Plug in your sale price, basis, and state — the calculator runs your exact 2026 federal + California tax and shows what a Structured Installment Sale keeps in your pocket.
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Or talk it through: 213-340-2018 · Hans Goldstein · NPN 20602398. Educational only — not tax, legal, or accounting advice.
