When small businesses are bought and sold, one number shows up again and again.
Seller’s discretionary earnings, or SDE.
SDE is not perfect, but it is widely used because it helps buyers quickly understand how much cash a business can generate for a single working owner. It creates a common baseline for comparison across businesses that may be structured very differently.
Understanding how SDE works, and where it falls short, helps owners set realistic expectations and make better decisions as they prepare for a sale.
What SDE actually measures
SDE is an estimate of the total financial benefit available to one owner who runs the business.
It starts with pre-tax net income and then adjusts for items that would not continue under a new owner or that do not reflect ongoing operations.
In simple terms, SDE shows what the business produces before considering how the current owner chose to pay themselves or structure taxes.
What is typically included in SDE
While every business is different, SDE usually includes:
Pre-tax net income
Owner compensation and benefits
Interest expense
Depreciation and amortization
Discretionary or personal expenses run through the business
One-time or non-recurring items that distort normal operations
The purpose of these adjustments is not to inflate earnings. It is to isolate the earning power of the business itself.
Why buyers use SDE
SDE exists for one primary reason. Comparison.
Small businesses often have:
Irregular owner pay
Personal expenses mixed into operations
Different tax strategies
Inconsistent accounting practices
SDE strips away those differences so buyers can compare one opportunity to another on a more level playing field.
Think of it as a rule of thumb, not a final answer.
How SDE is used in valuation
Most small businesses are valued using a multiple of SDE.
Once SDE is calculated, a buyer applies a multiple based on factors such as:
Industry
Size
Growth trends
Risk
Owner involvement
Transferability
SDE does not determine value on its own. It is the starting point, not the conclusion.
The strengths of SDE
SDE is widely used because it has real advantages.
It is:
Familiar to buyers and brokers
Relatively easy to calculate
Useful for early comparisons
Flexible across industries
Because it removes non-operating variables like interest and depreciation, buyers can make their own assumptions about financing and capital needs.
The limitations of SDE
SDE is also imperfect.
It is not a true measure of free cash flow, especially in businesses that require:
Ongoing capital expenditures
Significant working capital
Regular reinvestment to sustain operations
SDE also ignores taxes and can overstate earnings in asset-heavy businesses where depreciation is a real economic cost.
This is why buyers never stop at SDE. They use it to start asking better questions.
SDE versus reality
A strong SDE does not guarantee a strong valuation.
Buyers will still evaluate:
Customer concentration
Growth consistency
Margins
Systems and processes
Recurring revenue
Working capital needs
Management depth
Risk exposure
SDE opens the door. Everything else determines whether the buyer walks through it.
How SDE affects value
Because businesses are often valued as a multiple of SDE, every sustainable dollar matters.
If your business sells at a four times multiple, increasing SDE by $100,000 can increase value by roughly $400,000.
That leverage is real. But only if the increase is credible and durable.
Two practical ways owners increase SDE
Increase revenue carefully
Price increases are often the lowest-risk lever, especially when demand is stable. Even small pricing changes can have an outsized impact on SDE.
New products or campaigns can help, but buyers tend to discount recent or unproven initiatives. Predictability matters more than ambition.
Reduce expenses thoughtfully
Cost reductions often improve SDE faster than revenue growth. The key is restraint.
Cutting expenses that support operations, safety, or long-term stability usually backfires. Buyers look for efficiency, not fragility.
Which SDE period buyers look at
Most valuations rely on:
The last full year of SDE, or
Trailing twelve months (TTM)
If results vary widely year to year, buyers may look at averages or weight recent performance more heavily.
Projected SDE only matters when growth is consistent and well supported.
SDE is not the whole story
SDE is a tool, not a verdict.
It helps buyers compare opportunities quickly, but it does not replace diligence or judgment. Strong businesses combine healthy SDE with clarity, consistency, and low risk.
At Rowan, we treat SDE as one input among many. When owners understand how buyers use it, they stop chasing optics and start building real value.
Clarity beats guesswork. Preparation beats hope.
Get your FREE valuation today to see where you stand.
