Buyer's Guide · Buying a business
Add-backs: which ones are real, and which are padding the price?
An add-back is an expense on the books that a new owner won't actually bear: the seller's own salary, personal costs run through the business, and true one-time items. These get added back to profit when computing SDE (seller's discretionary earnings). A legitimate add-back passes three tests: it's personal or genuinely one-time, it won't recur for you, and it's provable in the documents. Scrutiny matters because add-backs get multiplied: at a typical 2.0× to 3.5× SDE multiple, a single fake $15,000 "one-time" expense inflates the asking price by $30,000 to $52,500.
What an add-back is, and why they're legitimate
Small-business sellers run their lives through their books: their own salary, the family health plan, the truck, the cell phone. None of that is a cost of running the business itself, so when the business is priced, those expenses are "added back" to profit. The result is SDE: the total amount a single owner-operator actually takes home in a year.
So add-backs themselves are the standard, legitimate mechanics of pricing an owner-operated business, not a trick. The trick is in the padding: every extra dollar a seller can label "add-back" raises SDE by a dollar, and the asking price by two to three dollars. That asymmetry is why the add-back schedule is where small-business valuations most often get inflated.
New to SDE itself? EBITDA vs SDE: which one prices the deal? →
The three tiers of add-backs
Standard: usually legitimate
- Owner's salary + payroll taxes on it
- The core of SDE by definition. Verify against payroll records or the owner's W-2, not the seller's word.
- Owner's health insurance
- Confirm on the insurance statements that the policy covers the owner, not employees you'd keep.
- Personal vehicle expenses
- Check registration and usage. One personal truck is normal; three vehicles for a one-owner store is padding.
- A true one-time cost (e.g., a settled lawsuit)
- Ask for the invoice, then confirm nothing similar appears in any other year's P&L.
Gray area: legitimate only with proof
- “One-time” repairs
- The classic. Pull 3 years of P&Ls: if a “one-time” repair shows up in two of them, it's maintenance, a real operating cost.
- A family member on payroll
- Only an add-back if they genuinely don't work in the business. If they run the register 30 hours a week, you're hiring their replacement.
- Above-market rent paid to the seller's own LLC
- Normalize to the market rent you'd actually pay, not to zero. The add-back is the excess, not the whole rent line.
Bogus: the price-padding patterns
- A working spouse's unpaid labor ignored
- The reverse add-back sellers never volunteer: free family labor you'll have to replace with a paid hire. It should reduce SDE.
- Recurring costs relabeled one-time
- Advertising, equipment leases, seasonal staffing: if the business needs it every year, it doesn't come back.
- Round numbers with no paperwork
- A $12,000 add-back with no invoice, no statement, no ledger line. If nothing in the documents supports it, it doesn't exist.
The padding math: why one fake line costs you five figures
Take a store showing $120,000 of net profit. The seller's add-back schedule claims: their $60,000 salary, $12,000 of health insurance, $8,000 of personal truck costs (all legitimate and provable), plus a $15,000 "one-time" parking-lot repair. Claimed SDE: $215,000.
Then you pull the prior two years of P&Ls and find paving and lot repairs in both. That "one-time" cost is just maintenance: a real, recurring expense. Real SDE: $200,000.
A $15,000 padding job sounds small until the multiple does its work: at 2.0× to 3.5×, that one line inflates the asking price by $30,000 to $52,500. The seller had to type one optimistic label. You'd pay for it for years.
Where does the multiple itself come from? How SDE multiples price a deal →
How to verify an add-back schedule
Ask for the add-back schedule in writing: every line named, dated, and tied to a document. No schedule, no negotiation: a seller who claims SDE without itemizing the add-backs is asking you to price the deal on trust.
Then run every line through the same three questions:
- Is it personal or truly one-time? The owner's salary is; "repairs" usually aren't.
- Will it recur for me? If the business needs the expense to operate (staffing, ads, maintenance), it stays in the expense column, whoever owns the place.
- Can the documents prove it? Payroll records, insurance statements, invoices, and three years of P&Ls. An add-back nothing supports is a discount you should be taking, not a premium you should be paying.
Add-back padding is one of the ten P&L tricks we see most. See the other nine →
Want every add-back checked against the documents?
Upload the seller's P&L, tax returns, and bank statements, and BizScore rebuilds SDE line by line. It itemizes every claimed add-back, totals them, and flags the ones nothing in the paperwork supports.
Frequently asked
- What is an add-back when buying a business?
- An add-back is an expense on the seller's books that a new owner won't bear: the seller's own salary, personal expenses run through the business, or a genuine one-time cost. Add-backs are added to net profit to compute SDE (seller's discretionary earnings), the number small owner-operated businesses are priced on.
- Which add-backs are legitimate?
- The ones that pass three tests: personal or genuinely one-time (the owner's salary, their health insurance, a settled lawsuit), non-recurring for the new owner, and provable in the documents (payroll records, insurance statements, invoices). If a line fails any test, it's padding until proven otherwise.
- What's the most common add-back trick?
- Relabeling recurring expenses as one-time. The test is history: pull three years of P&Ls and check whether the “one-time” repair, cleanup, or fee appears in more than one year. If it recurs, it's an operating cost, and it stays in the expense column.
- How do I verify a seller's add-backs?
- Demand an itemized add-back schedule: every line named, dated, and tied to a document. Verify each line against payroll records, insurance statements, and invoices, then cross-check three years of P&Ls for “one-time” items that recur. Refuse any line with no paperwork, and recompute SDE yourself before talking price.
About this guide
BizScore is built by first-time business buyers — people who watched someone close to them lose their life savings on a deal that looked clean on a spreadsheet and fell apart in the documents the seller never volunteered. That experience is why these guides exist, and why every BizScore report cites the exact document behind each finding.
Where the numbers come from: the benchmark ranges in our guides — SDE multiples, expense ratios, typical timelines — are widely-used industry rules of thumb, cross-checked against the analytical benchmarks BizScore applies inside its reports. Dollar figures such as a ~$15,000 quality-of-earnings review or a $5,000 deal attorney are representative of what buyers typically pay, not quotes; actual costs and multiples vary by deal. We review these figures periodically — last updated July 2026.
BizScore is an information service — think of it as a Carfax for a small business — not a CPA, an attorney, or financial advice. Use it to decide where to spend your professional dollars, and bring in a qualified professional before you sign anything.
This guide is general education, not a formal business appraisal or financial, legal, or tax advice. Every deal is different. Verify against the actual documents and talk to a qualified professional before you sign anything.