P&L normalization / SDE add-back calculator
Convert a raw P&L into a clean SDE figure by stepping through each add-back — owner salary, personal expenses, one-off costs, and depreciation. See the before-and-after comparison in one view, then download the result as a CSV spreadsheet or formatted PDF.
Enter your reported revenue and net profit, then add each normalization item. The table updates live to show adjusted SDE, margin improvement, and the total add-back quantum — the number buyers and brokers will scrutinize most. When you're done, export the full analysis as a CSV or a branded PDF report.
Base P&L figures
Reported P&L (as filed)
Trailing 12-month revenue as shown on the P&L.
Net profit after all expenses, as shown on the P&L or tax return. Can be negative.
Normalized result
Normalized SDE
—
— / month
Total add-backs
—
added to reported profit
Margin improvement
—
reported → normalized
Add-back items
| Category | Description | Amount | |
|---|---|---|---|
| Total add-backs | — | ||
Before vs after normalization
| Metric | As reported | Normalized | Change |
|---|
How this calculator works
The reported net profit is taken directly from the P&L or tax return. Each add-back item is an expense that either (a) the new owner will not incur, or (b) is a non-cash charge that does not represent real cash outflow. Adding these back produces the normalized SDE — the earnings figure used to apply an acquisition multiple.
The margin improvement shows the percentage point difference between reported profit margin (net profit ÷ revenue) and normalized SDE margin (SDE ÷ revenue). A large gap indicates the reported P&L significantly understates the business's earnings power — common in owner-operated businesses where the owner runs personal expenses through the company.
Once you have a clean SDE figure, use the SDE valuation calculator to apply market multiples and arrive at an asking price range.
About this tool
Raw P&L figures reported to tax authorities often understate the true earnings power of a business because they include discretionary owner expenses, non-recurring costs, and non-cash items. This tool walks through each add-back category, shows the cumulative impact, and produces a clean Seller's Discretionary Earnings (SDE) figure suitable for applying an acquisition multiple.
Frequently asked questions
What is an add-back?
An add-back is an expense on the P&L that a buyer would not incur (or would incur differently), so it is "added back" to net profit to arrive at true earnings power. The most common is owner compensation — owners of small businesses often take salary, personal expenses, and benefits through the business, all of which disappear when a new owner takes over. Other add-backs include one-off costs that won't recur and non-cash charges like depreciation.
What is the difference between SDE and EBITDA?
Both are normalized earnings figures, but SDE adds back the full owner compensation on top of EBITDA (Earnings Before Interest, Tax, Depreciation, and Amortization). SDE is the standard for owner-operated small businesses where the buyer will run the business themselves. EBITDA is used for larger businesses acquired by investors who will hire professional management — in that case, owner comp is replaced by a market-rate CEO salary rather than added back in full.
What qualifies as an add-back?
The test is: would a new arms-length owner incur this expense in the normal course of running the business? If no, it is a legitimate add-back. Owner salary, owner personal expenses run through the business, legal fees from a one-time litigation, conference attendance expensed as a personal perk, and non-cash depreciation on fully amortized assets are all common examples. Capital expenditure required to maintain the business is not an add-back.
How many add-backs is too many?
There is no hard rule, but a long list of add-backs raises flags with buyers. Sophisticated buyers will scrutinize each one. More than 4–5 material add-backs, or add-backs that collectively exceed 20–30% of reported net profit, will face pushback and may result in lower multiples or renegotiation. The best businesses have clean, well-documented financials that require few adjustments.
Are add-backs verified during due diligence?
Yes — buyers will ask for bank statements, payroll records, and receipts to verify every add-back. An add-back that cannot be evidenced will be rejected. This is why clear documentation of each item (including the description field in this tool) matters before presenting a deal.