Summary: This blog explains what seller’s discretionary earnings are, how they’re calculated, why they matter specifically for law firm owners planning a sale, and what you can do right now to improve your SDE before going to market. If you’re thinking about selling your firm, this year or several years from now, this is the number you need to understand.
You’ve spent years building your law firm. The clients trust you, the revenue is consistent, and by most measures the practice is doing well. But when someone asks what your firm is actually worth what a real buyer would pay for it do you have a confident, defensible answer?
Most law firm owners don’t. And the gap between what an owner expects to receive and what the market will actually offer often comes down to one financial metric they’ve never looked at closely: seller’s discretionary earnings.
Understanding Seller’s Discretionary Earnings isn’t just an accounting exercise. It’s the foundation of how your firm gets valued, how buyers assess what they’re buying, and ultimately how much money you walk away with when you decide to sell.
What Are Seller’s Discretionary Earnings?
Seller’s discretionary earnings (SDE) is the most widely used law firm valuation metric for small to mid-sized business sales. SDE represents the total financial benefit a single full-time owner-operator derives from the business annually, going beyond net income or standard EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization).
In plain language: SDE shows a potential buyer what the business is truly capable of earning, not what the tax returns show after the owner has optimized everything to minimize taxable income.
This distinction matters enormously. Business owners often write off personal expenses in part to show a lower net income and pay less taxes. But you’ll likely want to rework your financial documents when selling your business to showcase SDE instead.
The buyer isn’t interested in your tax strategy. They’re interested in one question: what will this business actually put in my pocket once I own it? Seller’s discretionary earnings answer that question in a standardized, comparable way.
How SDE Is Calculated
The formula is more straightforward than it sounds. Start with your net profit from tax returns or financial statements. Add back owner’s salary and benefits, interest expense, depreciation and amortization, taxes, discretionary expenses run through the business such as a personal vehicle, phone, or travel, and one-time non-recurring expenses like legal fees for a lawsuit or equipment replacement.
Written as a formula:
| SDE = Net Profit + Owner’s Salary + Owner’s Benefits + Interest + Taxes + Depreciation + Amortization + Discretionary Expenses + Non-Recurring Expenses |
Here’s a real example specific to law firms. Your firm shows net profit of $200,000. You pay yourself a salary of $250,000 and run $30,000 in personal expenses through the business. You have $15,000 in depreciation and paid $8,000 in one-time legal fees related to a lease negotiation. Your SDE would be: $200,000 + $250,000 + $30,000 + $15,000 + $8,000 = $503,000.
That $503,000 is a very different number from the $200,000 net profit on your tax return, and it’s the number a buyer actually uses to determine what your firm is worth.
What SDE Multiples Look Like for Law Firms
Once your seller’s discretionary earnings figure is established, a buyer applies a multiple to arrive at a valuation. SDE multiples for a law firm typically range from 2.44x to 2.84x, though well-positioned firms can command multiples of 3x to 4x.
Using the example above: at a 2.5x multiple, a firm with $503,000 in SDE would be valued at approximately $1.26 million. At a 3.5x multiple, the kind of well-prepared firm that commands that same SDE produces a valuation closer to $1.76 million. That’s a $500,000 difference driven entirely by how the firm is positioned, not by the underlying earnings figure.
Predictable revenue streams from recurring clients and diversified practice areas command higher valuations. The value of a law firm is usually between 2.5x and 4x of seller’s discretionary earnings.
What moves the multiple higher? The structural qualities that make the firm attractive to a buyer: client retention, documented systems, a stable team, reduced owner dependency, and clean financials. These aren’t vague suggestions. They’re the specific factors that determine where on the multiple range your firm lands.
SDE vs. EBITDA: Which One Applies to Your Firm?
This is a question many law firm owners run into, and the answer depends on firm size. SDE is used alongside other valuation methods to build a defensible asking price for small to mid-sized businesses. For buyers, SDE is a tool for assessing whether the business generates enough cash flow to be a viable investment.
Seller’s discretionary earnings are used when valuing smaller companies, while EBITDA is more commonly used when valuing larger companies. For most solo and small group law firms, which make up the majority of practices that change hands, SDE is the primary metric buyers and brokers will use.
For larger firms with multiple equity partners, EBITDA becomes more relevant because there’s no single owner-operator whose personal compensation needs to be normalized. For larger firms or those with multiple owners, EBITDA provides a cleaner picture of operational profitability because it removes owner-specific adjustments that don’t apply when ownership is distributed.
If you’re unsure which metric applies to your situation, that’s one of the first questions a qualified law firm advisor should help you answer before you go anywhere near a buyer conversation.
What Reduces Your SDE Multiple And What You Can Do About It
A strong SDE number paired with a low multiple produces a mediocre outcome. Practice goodwill tied to transferable firm value versus personal goodwill tied to individual attorneys is the single biggest factor determining whether your firm commands a premium or a discount and building transferable value takes years of intentional effort.
For law firm owners, personal goodwill is the silent valuation killer. If your clients come to the firm because of you specifically your reputation, your relationships, your expertise that value doesn’t transfer to a buyer. They’re paying for something that walks out the door with you on closing day.
The firms that command 3x to 4x multiples have done the work to convert personal goodwill into practice goodwill. That means introducing clients to other team members, building a referral network that isn’t entirely dependent on the owner, creating systems that deliver a consistent client experience regardless of who’s handling the matter, and developing a team capable of maintaining relationships through a transition.
None of this happens overnight. It’s a deliberate, multi-year process, which is exactly why the best time to start thinking about your SDE multiple is well before you plan to sell.
How Quid Pro Quo Law Helps Law Firm Owners Maximize SDE
Understanding your seller’s discretionary earnings is one thing, but knowing how to improve them and how to present them in a way that attracts serious buyers at strong multiples is a different conversation entirely.
Quid Pro Quo Law works exclusively with law firm owners at every stage of the sale process. For owners who are building toward a future sale, our exit planning coaching helps identify the specific gaps in systems, team structure, client dependency, and financials that are quietly holding the SDE multiple down.
For owners who are ready to go to market now, our brokerage services include a comprehensive firm valuation, a professionally prepared information deck, and a structured process to find the right buyer and manage the transaction from contact to contract.
Quid Pro Quo also works with attorneys looking to acquire existing practices, which means they understand what buyers are actually looking for when they evaluate a firm’s SDE, and they bring that buyer-side perspective directly into the preparation work they do with sellers.
The goal isn’t just to calculate your number; it’s to make sure that number and the multiple it commands reflect everything your firm is genuinely worth. Want to know what your firm’s seller’s discretionary earnings look like today? Connect with Quid Pro Quo Law for a firm valuation now!
Frequently Asked Questions
Q1: What is the difference between seller’s discretionary earnings and net profit?
Net profit is what remains after all business expenses, including the owner’s salary, are deducted, and it’s typically optimized to minimize tax liability. Seller’s discretionary earnings add back owner compensation, personal expenses run through the business, depreciation, and non-recurring costs to show a buyer the true earning power of the firm. For most law firms, SDE is significantly higher than net profit on the tax return.
Q2: How often should a law firm owner calculate their SDE?
Ideally, annually, even if a sale isn’t imminent. Tracking your SDE year over year gives you a clear picture of how your firm’s value is trending and flags problems early enough to address them. It also means you’re never caught flat-footed when an unexpected offer or opportunity arrives.
Q3: Can I calculate my own SDE or do I need a professional?
The basic calculation is something you can work through with your accountant. But determining which add-backs are fully defensible, how to present them to a buyer, and what multiple your firm is likely to command in the current market requires someone with specific law firm transaction experience. An improperly prepared SDE calculation can invite scrutiny during due diligence that delays or derails a deal.
Q4: What’s the fastest way to improve my SDE before selling?
Two levers move the number most quickly: reducing personal expenses run through the business that aren’t well documented, and identifying legitimate add-backs that haven’t been captured. Beyond the calculation itself, improving your firm’s realization rate the percentage of billed time that actually gets collected directly improves the underlying earnings that SDE is built on.
