Start with net income, then add interest, income taxes, depreciation, amortization, one working owner’s compensation and benefits, and supportable nonrecurring or non-operating expenses.
Start with net income, then add interest, income taxes, depreciation, amortization, one working owner’s compensation and benefits, and supportable nonrecurring or non-operating expenses. Subtract unusual income and costs a buyer must add back into the operation.
What matters before using the headline answer
- Calculate SDE from a reconciled reported-income subtotal, then show every owner-compensation, noncash, financing, tax, personal, and nonrecurring adjustment separately.
- SDE is designed around one working owner; multiple owners, passive owners, or complex management teams require an explicit role and replacement-cost bridge.
- An item is not an add-back merely because the seller dislikes it or controls it. The buyer test is whether the cost was incurred, is nonrecurring or discretionary, and must continue to support revenue.
- Negative adjustments are essential: missing management, below-market rent, deferred maintenance, underpaid family labor, and other omitted costs can reduce normalized SDE.
Build the bridge from a reconciled income statement
Use a fiscal-year or trailing-twelve-month statement that ties to the general ledger and tax records. Label every adjustment with an amount, account, date, explanation, and supporting document.
A clean bridge lets a buyer reproduce the calculation. A rounded schedule assembled from memory usually creates more questions than value.
- Net income
- Plus interest and income taxes
- Plus depreciation and amortization
- Plus one owner’s compensation and documented benefits
- Plus or minus supportable unusual items
Test each add-back from the buyer’s perspective
Ask whether the expense will truly disappear, whether it is outside ordinary operations, and whether it is supported. A one-time legal settlement may qualify. A recurring marketing program usually does not. Repairs cannot be added back merely because the owner would prefer to defer them.
If a relative is underpaid, normalization may require an additional expense rather than an add-back. If the company owns real estate, rent may need adjustment to a market rate.
Use multiple periods
One strong year can be misleading. Compare at least several annual and monthly periods, identify seasonality, and explain whether the latest result is a sustainable run rate.
Create an adjustment ledger, not a rounded add-back list
For every proposed adjustment, record the general-ledger account, transaction date, vendor or payee, amount, business purpose, expected treatment after closing, and supporting document. Separate owner compensation and benefits from discretionary expenses, and separate nonrecurring items from normal costs that simply fluctuated. This lets a buyer test the schedule without rebuilding it from bank statements.
Include negative adjustments. Under-market family wages, deferred repairs, missing insurance, below-market rent, unrecorded owner labor, and unsustainably low marketing can all mean the buyer will incur more cost than the historical statement shows. A balanced schedule is more credible than one in which every line moves earnings upward.
Compare tax, book, and cash evidence
Tax returns provide an important anchor but may group expenses differently from internal reporting. Monthly income statements reveal seasonality and the current run rate. Bank and merchant statements can support revenue completeness, while payroll reports support owner and family compensation. Differences should be reconciled rather than explained away as timing without evidence.
Prepare SDE for at least the periods a buyer will examine and identify accounting-policy changes. A one-year result can be misleading after an unusual shutdown, acquisition, major customer win, or owner transition. The schedule should make those events visible.
SDE adjustment register: what each category must prove
Use account-level evidence and the same policy in every historical period. The register should allow a buyer to accept, reject, or modify an item without rebuilding the entire schedule.
| Issue | What the owner should assemble | What a buyer or reviewer will test | How it affects the decision |
|---|---|---|---|
| Reported income control | Tax return, income statement, trial balance, general ledger, bank reconciliation, and book-to-tax bridge for the selected period. | Confirm the starting subtotal and investigate unexplained differences, suspense accounts, cutoff errors, and omitted balance-sheet effects. | Prevents adjustments from being layered onto a number that does not tie to the books. |
| Owner compensation | Wages, guaranteed payments, payroll taxes, benefits, retirement, insurance, vehicle, and duties for every owner. | Identify one working-owner package and separate additional roles the buyer must retain or replace. | Defines the economic benefit represented by SDE. |
| Personal or discretionary expenses | Invoices, card detail, business purpose, personal-use percentage, and account history across all periods. | Determine whether the expense supports customers, staff, compliance, sales, or owner labor and whether it will recur. | Allows only the documented nonbusiness or truly discretionary portion. |
| Nonrecurring and missing expenses | Legal matter, casualty, relocation, launch, settlement, vacancy, maintenance, rent, and replacement-cost support. | Search for recurrence, related recoveries, future obligations, and expenses shifted into another period. | Balances legitimate one-time add-backs with costs absent from the reported statements. |
A reproducible SDE calculation
The calculation should work as a controlled bridge, not a collection of handwritten explanations beside the income statement.
- 01
Select and lock the period
Use a filed year or latest fully closed trailing period and preserve the original ledger export.
Deliverable: Dated reported-income control sheet
- 02
Reconcile the starting subtotal
Tie the selected net or pretax income to annual records and explain book-to-tax and year-end entries.
Deliverable: Reported-income reconciliation
- 03
Map the working owner
Identify the one owner package represented by SDE and separately price every additional operating role.
Deliverable: Owner-role and compensation matrix
- 04
Document every adjustment
Record account, vendor, date, amount, reason, recurrence, source document, and proposed treatment for each item.
Deliverable: SDE adjustment register
- 05
Compare periods and run downside
Apply the policy to at least three years and the trailing period, then remove disputed add-backs and insert buyer-required costs.
Deliverable: Multi-period SDE and sensitivity schedule
Worked example: distinguish supported, disputed, and negative adjustments
Assume a business reports $180,000 of pretax income and $115,000 of owner wages and benefits. The seller proposes $70,000 of other add-backs. Review shows $28,000 of personal travel with detailed support, $22,000 of legal fees tied to a closed exceptional matter, and $20,000 of marketing the seller intends to stop. The owner also performs bookkeeping that would cost $32,000 to replace.
| Adjustment | Buyer-tested treatment | Reason |
|---|---|---|
| Owner package: +$115,000 | Accepted under one-owner SDE | Compensation and duties reconcile to payroll and the owner-role assumption |
| Personal travel: +$28,000 | Accepted | Transaction detail supports nonbusiness use and no customer function |
| Legal matter: +$22,000 | Accepted subject to closure evidence | Matter is exceptional with no remaining exposure identified |
| Marketing and bookkeeping: -$12,000 net | Reject $20,000 marketing add-back; subtract $32,000 replacement cost | Marketing supports demand and bookkeeping must continue |
Buyer-tested SDE is $333,000: $180,000 pretax income, plus $115,000 owner package, plus $28,000 travel, plus $22,000 legal fees, minus $12,000 net for the disputed marketing and missing bookkeeping treatment.
The seller’s untested case would have been $365,000 before recognizing bookkeeping. Showing the line-by-line bridge preserves the legitimate adjustments while making the buyer-required cost visible. It also identifies the exact documents that could change the legal-fee conclusion.
Where the analysis or preparation usually breaks down
Starting with cash withdrawals or distributions
Why it matters: Owner draws are balance-sheet or equity transactions and do not measure the company’s operating earnings.
Better approach: Begin with reconciled income and analyze compensation and distributions separately.
Adding back loan principal
Why it matters: Principal is not an income-statement expense, so adding it back creates earnings that were never deducted.
Better approach: Reconcile interest through the income statement and handle debt in the value and proceeds bridge.
Accepting a rounded seller estimate
Why it matters: A buyer cannot trace the amount, period, or recurrence and may discount the entire adjustment package.
Better approach: Use transaction-level support and preserve exact amounts before summarizing.
What a defensible owner decision looks like
A strong SDE calculation is conservative enough to be reproducible and detailed enough to be negotiated line by line. Its credibility comes from the reported-income control and adjustment evidence, not from the size of the add-back total.
Owners should expect disputed items. Showing both the seller case and a buyer-tested case makes the range more useful and reveals which records or operating changes could improve confidence.
Questions owners ask
Can personal expenses be added back?
Potentially, if they are documented, not required for operations, and would not continue for a buyer. The tax and accounting treatment should be discussed with qualified advisers.
Can I add back depreciation?
It is commonly added in SDE, but equipment-heavy businesses still require a realistic capital-expenditure analysis.
Can depreciation always be added back to SDE?
It is commonly added back in the earnings definition, but necessary equipment replacement and capital spending still affect cash flow and value. An add-back does not make worn assets free.
Should health insurance for the owner be added back?
It may be part of the working-owner benefit when the accounting and buyer assumptions support that treatment. The schedule should identify who is covered, where the cost is recorded, and whether replacement benefits are needed.
Can charitable contributions be added back?
Possibly, if they are truly discretionary, recorded as an operating expense, and not required for customer, community, franchise, or contractual reasons. Verify tax classification separately with an adviser.
How should two working owners be handled?
SDE commonly reflects one working owner. Add back owner packages, then subtract market compensation and benefits for every role the buyer must retain beyond that one-owner assumption.
Sources and review date
Last reviewed: July 26, 2026. Sources are linked for context; a national benchmark is not a substitute for local comparable sales or a purpose-specific appraisal.
- International Business Brokers Association glossary — Professional definitions for SDE, transaction terms, and Main Street business brokerage concepts.
- IRS valuation job aid and Revenue Ruling 59-60 — Appendix A reproduces Revenue Ruling 59-60 and its closely held business valuation factors; the job aid itself states that it is not legal authority.
- U.S. Small Business Administration: Merge and acquire businesses — Owner-oriented guidance on valuation, agreements, due diligence, and professional support in an acquisition.
- U.S. Bureau of Labor Statistics: Occupational Employment and Wage Statistics — A public starting point for testing market-rate replacement compensation; local duties and labor markets still require judgment.
- IRS Publication 583: Starting a Business and Keeping Records — Describes recordkeeping and reconciliation practices, including agreement among bank statements, books, and supporting business records.
- IRS Internal Revenue Manual 4.10.3: Examination Techniques — Provides official examination procedures, including reconciliation of bank deposits to reported gross receipts for appropriate small and medium-size taxpayers.
- SBA SOP 50 10 lender and development company loan programs — Current SBA lending procedures; financing rules can affect valuation scope, equity injection, seller debt, and change-of-ownership underwriting.