7 Ways Seller Discretionary Earnings Boost Practice Value

If you’re thinking about selling your dental practice, one number matters more than almost anything else: your seller discretionary earnings (SDE). It’s the figure that buyers, brokers, and lenders use to determine what your practice is actually worth. Your tax return might show one story, but SDE tells the real one by revealing the total financial benefit available to whoever owns the practice.

This guide breaks down exactly how SDE is calculated, the most common adjustments and refinements that affect it, and how it translates into an actual sale price. Whether you’re years away from selling or actively preparing, understanding SDE puts you in control of your valuation.

The SDE Formula: How It Works

The SDE calculation starts with your practice’s pre-tax income and then adds back expenses that are specific to you as the current owner. The idea is simple: a new owner won’t have your exact salary, your car payment, or your spouse on payroll. So those get added back to show what the practice truly generates.

Here’s the formula:

The question SDE answers is straightforward: What is the total financial benefit this practice generated for its owner? A new buyer will make different choices about salary and spending, so SDE strips all of that away to show the raw earning power of the business itself.

Common Add-Backs for Dental Practices

Every practice is different, but these are the add-backs that come up in nearly every dental practice SDE calculation:

• Owner’s salary and benefits (for the average practice owner, this is often $250,000 to $350,000 or more in W-2 compensation alone)
• Personal vehicle expenses, travel, or meals charged to the business
• Family members on payroll who aren’t performing proportional work
• Retirement plan contributions above what an employee-dentist would receive
• One-time costs like a $20,000 legal consultation or office renovation
• Depreciation and amortization from your equipment and leasehold improvements
• Interest payments on practice loans (since a new owner will have their own financing)

If your practice has multiple owner-dentists, only one owner’s full compensation is added back. The other owners’ pay gets adjusted to what you’d pay an associate at market rate. This is a nuance that often gets overlooked.

Keep detailed records to justify every add-back. A defensible SDE calculation, ideally prepared with an experienced broker, is the foundation of a strong valuation and a smooth sales process.

Refining Your SDE: Adjustments That Matter

The standard add-back formula gives you a starting point, but most serious valuations go further. Buyers and their advisors will apply additional refinements to understand how stable, reliable, and comparable your earnings really are. Here are the most important ones.

Normalizing Across Multiple Years

A single year of SDE can be misleading. Maybe you had a great year because of a large insurance settlement, or a bad year because you closed for renovations. Normalizing means looking at three to five years of SDE and smoothing out the anomalies to show what the practice earns under typical conditions.

Common normalization adjustments include:

• Smoothing out revenue from a one-time corporate contract or large case
• Adjusting for an extended office closure (renovations, health issues, or COVID-related shutdowns)
• Giving more weight to recent years if the practice shows a clear growth trend

Document every adjustment with clear reasoning. Buyers will push back on anything that looks like you’re inflating the numbers.

Cash Flow Reconstruction

Some practices look great on paper but have cash flow timing issues that complicate the real picture. The cash flow reconstruction approach rebuilds your financials from the ground up, focusing on actual cash received and spent rather than accrual-based accounting figures. For a deeper look at this topic, see our guide on understanding cash flow.

This matters most for:

• Cosmetic or implant-heavy practices where large receivables affect cash timing
• Orthodontic practices with seasonal enrollment patterns
• Growing practices that are reinvesting heavily in equipment

Dental-Specific Adjustments

Dental practices have financial quirks that don’t exist in other small businesses, and your SDE calculation should account for them. An informed buyer will expect to see these addressed.

• Insurance write-offs and reimbursement timing that affect reported revenue
• Lab fees that a new owner might source differently (in-house vs. outsourced)
• Associate compensation that functions more like a profit share than a standard salary
• CE expenses or conference travel that exceeds what a typical owner would spend

This is one of the biggest reasons to work with a broker who specializes in dental practices rather than a generalist. They’ll know which adjustments are legitimate and defensible in your specific situation.

Weighted Time Periods

Not all years should count equally. If your practice has been growing 10% annually, using a simple three-year average actually understates your current earning power. On the other hand, if you had one unusually strong year, a flat average might overstate it.

The weighted approach assigns different importance to each year:

• Growing practice: Weight the most recent year at 60%, the year before at 30%, and two years ago at 10%
• Stable practice: An even split across three years works fine
• Recent dip: A more balanced weighting (40/30/30) avoids over-penalizing for a temporary setback

Whatever weights you use, be transparent about your reasoning. Buyers respect honesty more than optimism.

Quality of Earnings Analysis

Sophisticated buyers, especially DSOs and group practices, will often commission a Quality of Earnings (QoE) report. This goes beyond the SDE number itself and examines how sustainable and repeatable those earnings really are. It’s typically prepared by a CPA firm as part of due diligence.

A QoE analysis looks at things like:

• How concentrated your revenue is among a small number of patients
• Your payer mix (PPO, fee-for-service, Medicaid) and how stable it is
• What percentage of revenue comes from recurring hygiene vs. one-time procedures
• Production trends per provider over time

If you’re selling to a DSO or a buyer backed by private equity, expect a QoE report to be part of the process. You can get ahead of this by having your own CPA prepare one before you go to market. It shows transparency and builds buyer confidence, which is a core part of any comprehensive practice valuation.

Pro Forma SDE: The Forward-Looking View

While traditional SDE looks backward at what the practice has earned, pro forma SDE projects what it could earn under new ownership. This is useful when there are clear, documented opportunities that a buyer can act on after closing.

Common pro forma adjustments include:

• Cost savings from removing a non-working family member from payroll
• Revenue increases from adding an associate or extending hours
• Efficiency gains from upgrading to a modern practice management system

A word of caution: pro forma projections need to be conservative and backed by real data. "We could double revenue with better marketing" won’t fly. But "adding a hygienist to fill the empty operatory on Tuesdays would generate an estimated $120,000 in annual production based on current demand" is the kind of specific, credible projection that helps a buyer see the path to growth. For more on this topic, see our guide on maximizing profit in dental practice sales.

From SDE to Sale Price

Once you have a solid SDE number, the next question is obvious: what’s the practice actually worth? That’s where multiples come in.

How Multiples Work

A valuation professional applies a "multiple" to your SDE to arrive at an estimated practice value. For most dental practices, SDE multiples fall in the range of 1.5x to 2.25x, with many general practices trading around 1.7x to 2.0x. The exact multiple depends on factors like location, growth trends, payer mix, and how dependent the practice is on the current owner.

Here’s a simple example: if your practice generates $400,000 in SDE and a broker determines a 1.85x multiple is appropriate, the estimated practice value would be $740,000.

Does the Sale Price Equal the SDE?

No. The sale price is a multiple of SDE, not the SDE itself. A buyer is purchasing the right to future cash flow, and the multiple reflects how many years of earnings they’re willing to pay upfront. A practice with $400,000 in SDE might sell for $740,000 at 1.85x, or $600,000 at 1.5x if there are risk factors pulling the multiple down.

It’s also worth knowing that SDE is the standard metric for owner-operated dental practices. Larger, multi-provider practices (especially those selling to DSOs) are typically valued using EBITDA, which is a different calculation with significantly higher multiples. If you’re curious about DSO transactions specifically, see our article on selling a dental practice to a DSO.

Making Your SDE Work for You

Understanding SDE isn’t just about knowing the formula. It’s about being intentional with your practice’s financials in the years leading up to a sale. Every dollar of unnecessary expense you clean up, every add-back you can document, and every year of consistent growth you can show directly increases what a buyer will pay.

A few practical steps you can take right now:

• Separate personal and business expenses cleanly, even if you’re years from selling
• Keep detailed records for anything that would qualify as an add-back
• Work with a CPA who understands dental practice valuations to review your P&L annually
• Start tracking your SDE now so you can show a multi-year trend when the time comes

The goal is to present a transparent, defensible number that a buyer can look at and say, "I trust this." That trust is what drives higher multiples, smoother negotiations, and better outcomes for everyone involved.

Ready to find out where your practice stands? Request a complimentary practice valuation and get a clear picture of your practice’s earning power and market value.