You Spent Years Building Value. Don't Give Half of It to the IRS.
On a $3 million practice sale, the difference between a 40% effective tax rate and a 25% effective rate is $450,000. That’s not a rounding error — it’s a life-changing amount of money. And it’s entirely within your control with proper planning.
Each of these strategies can save significant money — and they’re often most powerful when combined. The key is starting early enough to implement them properly.
The structure of your sale — whether it’s classified as an asset sale or a stock/equity sale — has enormous tax implications. In an asset sale, the purchase price is allocated across different asset classes (equipment, goodwill, covenant not to compete), each taxed differently. In a stock sale, you sell your ownership interest in the entity.
Impact:
Asset sales are generally preferred by buyers (they get a stepped-up basis for depreciation), while stock sales can be more favorable for sellers in certain structures. The allocation negotiation alone can shift your tax burden by hundreds of thousands of dollars.
Most DSO transactions are structured as asset sales. Understanding how the purchase price allocation works — and negotiating it effectively — is critical to your after-tax outcome.
Not all sale proceeds are taxed equally. Goodwill and long-term capital gains are taxed at preferential rates (typically 20% federal + 3.8% NIIT). But portions allocated to consulting agreements, non-competes, or accounts receivable may be taxed as ordinary income (up to 37% federal).
Impact:
The difference between capital gains and ordinary income tax rates can be 15-20+ percentage points. On a $3M sale, that difference in allocation could mean $300K-$600K in additional taxes if not structured properly.
Buyers often want to allocate more to consulting/non-compete (which they can deduct). You want more allocated to goodwill (which you pay less tax on). This is a negotiation — and you need someone fighting for your side.
Section 1202 of the Internal Revenue Code allows exclusion of up to $10M (or 10x your basis) in capital gains from the sale of Qualified Small Business Stock. If your practice is structured as a C-corporation and meets certain requirements, this can be the single most valuable tax strategy available.
Impact:
For qualifying practices, QSBS can eliminate federal capital gains tax entirely on up to $10M in gains. For a practice selling for $5M with $500K basis, that’s potentially $900K+ in tax savings.
QSBS eligibility requires specific entity structure, holding period, and asset tests. Many dentists don’t qualify because they’re structured as S-corps or LLCs. But for those who do — or who can restructure in advance — the savings are extraordinary.
An installment sale allows you to spread the recognition of gain over multiple tax years as you receive payments. This can keep you in lower tax brackets, defer the 3.8% Net Investment Income Tax, and provide cash flow planning flexibility.
Impact:
By spreading a $4M gain over 3-5 years instead of recognizing it all in year one, you can potentially save $100K-$200K in taxes through bracket management alone.
Installment sales work best when you have confidence in the buyer’s ability to pay over time. They can be combined with other strategies (like Opportunity Zone investments) for compounding tax benefits.
Investing capital gains from your practice sale into a Qualified Opportunity Zone Fund can defer recognition of those gains until 2026 (or when the investment is sold). If held for 10+ years, any appreciation on the Opportunity Zone investment is tax-free.
Impact:
While the deferral benefit has diminished (the original basis step-up provisions have expired), the tax-free appreciation on long-term OZ investments remains valuable for sellers with a long investment horizon.
OZ investments carry real investment risk and illiquidity. They’re not appropriate for all sellers, but for those with the right risk tolerance and timeline, they can be a powerful complement to other tax strategies.
Your practice’s entity structure (S-corp, C-corp, LLC, sole proprietorship) directly impacts how sale proceeds are taxed. In some cases, restructuring before a sale — even years in advance — can create significant tax advantages.
Impact:
Converting from an S-corp to a C-corp (to pursue QSBS eligibility) or restructuring to separate real estate from the operating entity can create meaningful tax savings. But these changes require advance planning — often 2-5 years before a sale.
Entity restructuring has complex rules and potential pitfalls (built-in gains tax, depreciation recapture, etc.). This is not a DIY strategy — it requires coordination between your M&A advisor, CPA, and tax attorney.
Common Tax Planning Mistakes
Many tax strategies require years of advance planning. QSBS needs a 5-year holding period. Entity restructuring has built-in gains tax windows. Starting tax planning after you've signed an LOI is too late for the most impactful strategies.
Operating as an S-corp when a C-corp would qualify for QSBS exclusion. Or failing to separate real estate from the operating entity before a sale. These structural decisions, made years ago, can cost hundreds of thousands at closing.
Accepting the buyer's proposed allocation without negotiation. Buyers want to allocate to deductible categories (non-compete, consulting). You want allocation to capital gains categories (goodwill). Every dollar shifted is a tax rate differential in your pocket.
Your CPA is great for annual tax returns. But M&A tax planning is a specialty. Transaction-specific tax advisors understand deal structures, allocation strategies, and planning opportunities that general practitioners may not encounter regularly.
Tax planning is one of the highest-ROI activities in the entire transition process. A single conversation can identify strategies worth hundreds of thousands in savings.
Evaluate entity structure. Consider C-corp conversion for QSBS eligibility. Separate real estate from operating entity if applicable.
Confirm QSBS eligibility and holding period. Optimize compensation structure. Begin charitable planning if relevant. Engage transaction tax advisor.
Model tax scenarios for different deal structures. Identify Opportunity Zone investments. Plan installment sale structure if appropriate.
Negotiate purchase price allocation aggressively. Structure consulting/non-compete terms tax-efficiently. Coordinate with CPA on estimated payments.
Execute Opportunity Zone investments within 180 days. File elections for installment sales. Implement charitable strategies. Plan estimated tax payments.
Frequently Asked Questions
The total tax burden depends on your sale structure, purchase price allocation, entity type, state taxes, and planning strategies employed. As a rough guide: federal capital gains tax is 20% + 3.8% NIIT (23.8%) on goodwill and long-term gains, while ordinary income portions can be taxed up to 37% federal. State taxes add 0-13% depending on your state. Without planning, total effective rates of 30-45% are common. With proper planning, effective rates of 20-30% are achievable.
In an asset sale, the buyer purchases individual assets of the practice (equipment, patient records, goodwill, etc.). In a stock sale, the buyer purchases your ownership interest in the entity. Asset sales allow purchase price allocation across asset classes (each taxed differently). Stock sales are simpler but offer less allocation flexibility. Most dental practice sales to DSOs are structured as asset sales.
Yes, through several mechanisms: installment sales (spreading gain recognition over payment years), Opportunity Zone investments (deferring gains into qualified funds), and in some cases, like-kind exchanges for real estate components. Each strategy has specific requirements, risks, and trade-offs that should be evaluated with a qualified tax advisor.
Ideally, 2-5 years before you plan to sell. Some strategies (QSBS, entity restructuring) require years of advance planning. Others (purchase price allocation, installment sales) can be implemented during the deal. But the earlier you start, the more options you have. Even if you’re not sure when you’ll sell, understanding your current tax position is valuable.
Both. Your regular CPA knows your financial history and ongoing tax situation. A transaction tax specialist knows deal structures, allocation strategies, and M&A-specific planning opportunities. The best outcomes come from coordination between both — which is something we help facilitate as part of our advisory process.