The Brief

Fake SDE is the oldest con in the small business book.
It looks like profit, smells like profit — but disappears the second you pay someone else to run the business.

If the number only works when the owner does everything, you’re not buying a business.
You’re buying a job with a costume on.

This guide breaks down how to cut through the fairy dust in under 5 minutes:

  • Follow the add-backs — where fiction usually hides.
  • Put a real salary on the owner — because “free labor” isn’t real.
  • Reconcile to the bank, not the broker — stories don’t pay debt service.
  • Stress test the numbers — if the math breaks, the deal does too.

Spotting fake SDE isn’t about being a forensic accountant.
It’s about being the one buyer in the room who refuses to buy the story without the math.

1. Follow the Add-Back Trail

Add-backs are where 90% of SDE fiction lives.
A seller’s “$400K SDE” often looks like this:

  • $120K “owner salary add-back” because they worked 80 hours a week
  • $60K in “one-time” costs that mysteriously show up every year
  • $30K in personal expenses sprinkled through COGS

Example:
A café claims $350K SDE. The owner works 70 hours/week, pays themselves nothing, and runs their car, health insurance, and family phone plans through the business.
Once those “add-backs” are stripped, real SDE drops to $160K.

Your move:

  • Strip out anything that’s personal, recurring, or relies on one exhausted human.
  • If the deal only works with the fairy dust, it’s not a deal.

2. Put a Real Salary on the Owner

If the seller wears five hats, those hats have market rates.
A real business can afford to replace the owner. A fake one can’t.

Example:
A plumbing company claims $500K SDE. The owner runs sales, dispatch, and field work.

  • GM replacement: $120K
  • Dispatcher: $60K
  • Technician: $90K

Actual SDE after replacing the owner? Around $230K.

If replacing the owner breaks the business, there is no business.

Your move:
Back out the cost of real people doing real jobs.
If the “profit” vanishes, congratulations — you just spotted fake SDE.


3. Payroll vs. Add-Back Mismatch

A quick sniff test: check payroll.
If payroll on the P&L doesn’t match the roles implied in operations, something’s off.

Example:
A marketing agency claims $400K SDE but shows only $90K payroll for six “employees.” In reality, that “team” is the owner plus two unpaid interns. Real payroll would be closer to $250K. Poof — margin gone.

Your move:

  • Benchmark payroll for the industry and location.
  • Call BS on “everyone’s family working for free.”
  • Adjust SDE downward before you get hypnotized by the asking price.

4. Reconcile to the Bank, Not the Broker

The spreadsheet isn’t the truth. The bank account is.

If the claimed SDE doesn’t align with:

  • Bank deposits
  • Tax returns
  • Merchant processor statements

…you’re looking at a story, not a business.

Example:
A seller claims $900K revenue and $300K SDE. But the bank statements only show $600K in deposits.
Either $300K is cash under the table (good luck proving it to a lender) or it doesn’t exist.
Either way, that number isn’t real.

Your move:

  • Verify SDE against hard financial evidence.
  • If it doesn’t reconcile, walk.

5. Stress Test With DSCR Math

Even if the number looks good on paper, it has to survive a DSCR stress test — basically:
“Can this business actually pay the bills and you?”

Quick math:

  • Claimed SDE: $300K
  • Payroll for real roles: -$100K
  • SBA loan payment: -$120K
  • Working capital buffer: -$20K
    Net: $60K

That’s not “$300K profit.” That’s a stressed-out buyer with no cushion.

If the SDE doesn’t survive DSCR math, it’s fake.


6. Watch for “One-Time” Costs That Aren’t

“One-time” is the most abused phrase in small business deals.
Marketing overhaul, equipment repair, “family medical emergency” — if it happens every year, it’s not one-time. It’s overhead.

Example:
A gym owner adds back $45K in “one-time equipment repairs.”
Three years of statements show the same line item every year. Surprise: that’s just how much it costs to keep the treadmills alive.

Your move:

  • Look at a 3-year trend line, not a broker’s pitch deck.
  • If it repeats, it stays in the expense column.

Bottom Line: Real Businesses Don’t Need Fairy Dust

A real SDE holds up to math, not just marketing.
If the number depends on owner heroics, unpaid family labor, or “trust me bro” accounting — it’s not profit. It’s a mirage.

  • Add-backs should clarify, not inflate.
  • Owner salary isn’t optional.
  • Bank statements don’t lie.

Disclaimer

This article is for informational purposes only and does not constitute financial, legal, or investment advice. Always consult with a qualified professional before making any acquisition decisions.

Avery Hastings, CPA

Avery Hastings, CPA

Avery Hastings, CPA lives in Tokyo, helping first-time buyers cut through the noise and avoid bad deals. When she's not tearing apart small biz P&Ls, you’ll find her sipping a Pauillac red or carving through powder on her snowboard in the Japanese Alps.