EBITDA Add-Backs When Buying a Business in Australia: What's Legitimate and What's Not
EBITDA add-backs are adjustments made to a business's reported profit to strip out expenses that won't exist under new ownership — things like an owner paying themselves above market rate, personal expenses run through the company, or a one-off legal bill from a dispute that's now settled. In Australia, add-backs are standard in small business sales and are used to arrive at a "normalised EBITDA" figure that reflects what the business truly earns as an ongoing concern.
As the buyer, you need to understand that add-backs are claims, not facts. Every add-back a seller presents is an argument. Your job is to decide which arguments hold up.
This is Module 4 of the Playbook — valuation and pricing — and add-backs sit right at the centre of it. Get them wrong, and you're paying a multiple on earnings that don't exist.
What Are EBITDA Add-Backs?
EBITDA stands for Earnings Before Interest, Tax, Depreciation and Amortisation. It's the standard starting point for valuing small Australian businesses, because it strips out financing choices and accounting treatment to show operating profit.
Add-backs go one step further. They adjust for expenses in the reported accounts that either:
- Won't continue under a new owner (the outgoing owner's above-market salary, their lease on a BMW through the business)
- Are genuinely one-off (a flood damage repair in 2023, a legal settlement that's done and dusted)
- Don't reflect real cash cost (depreciation on equipment that won't need replacing)
The resulting number — normalised EBITDA — is what gets multiplied to arrive at a sale price. A 3x multiple on $300,000 normalised EBITDA gives a $900,000 asking price. If that $300,000 includes $100,000 of dodgy add-backs, you're paying $300,000 too much. That kind of error has ended more than a few acquisitions badly.
The process of working through this is what I've written about in detail in my guide to normalising EBITDA when buying a business. This article focuses specifically on which add-backs are legitimate and how to verify them.
The Add-Backs That Are Legitimately Accepted
Owner's salary above or below market rate. The seller pays themselves $60,000 a year to run a plumbing business turning over $2.5 million. The market rate for a manager to replace them is $120,000. The seller adds back $60,000, arguing the business earns more than the accounts show. This is legitimate — but the number needs to be at market rate, not inflated. I've seen sellers add back a salary difference using an artificially low market comparison rate to make the business look more profitable than it is.
Personal expenses run through the business. This is common in owner-operated Australian businesses and the ATO knows it too. A car lease, holiday travel coded as "site visits", spouse on the payroll who does minimal work. These are add-backs if they're real costs that won't recur under your ownership. The key word is "if" — you need receipts, bank statements, and a reasonable explanation.
Non-arm's length rent. The seller owns the premises and charges the business rent at half the market rate (or double it, to extract more money while keeping EBITDA low before a sale — yes, people do this both ways). An add-back adjusts rent to the market rate. The direction of the adjustment depends on which way the seller has been running it.
One-off and extraordinary costs. A redundancy payout when a long-term employee left. Legal fees from a contract dispute that resolved two years ago. A roof replacement after storm damage that insurance partially covered. These are legitimate add-backs if they're genuinely non-recurring — the question is always whether they really are one-offs or whether the business just has a pattern of "one-off" expenses every year (in which case they're actually operating costs).
Depreciation and amortisation. These are always added back as part of the EBITDA calculation — they're accounting charges, not cash leaving the business. Worth noting though: if the business has significant capital equipment that genuinely needs replacing in the next few years, the depreciation charge understates the real cash cost of maintaining the asset base.
The Add-Backs That Should Raise Your Eyebrows
Not all add-backs are what they seem. A few patterns worth watching for when you're reviewing the seller's normalised accounts:
Recurring "one-off" expenses. Look at three to five years of accounts. If there's a one-off item in every single year — different reason each time, but always there — those aren't one-offs. They're the cost of running the business. A broker told me recently about a painting business where the seller had added back "one-off equipment repairs" in four consecutive years. Every year a different machine, every year conveniently expensive. That's a maintenance cost, not an add-back.
Salary add-backs using inflated market rate comparisons. The seller references a recruitment ad for a similar role at a larger company to justify a high market replacement rate. A manager running a $4 million residential cleaning business in suburban Brisbane isn't being paid $200,000 on the open market. Get a real quote from an operations manager with relevant experience, not the highest comparable you can find.
Big add-backs in the final year before sale. If normalised EBITDA is significantly higher in year three than years one and two, and the difference is mostly add-backs rather than genuine revenue growth, treat it carefully. Sellers sometimes accelerate personal expenses in the final year to inflate the normalised figure.
Add-backs that depend on your interpretation. "The owner's time in the business would be replaced by a part-time admin" — maybe, maybe not. Add-backs that require a generous assumption about how you'll run the business are worth less than add-backs that reflect objective costs under the current owner.
How to Verify Add-Backs as a Buyer
The seller's accountant prepared the normalised accounts. Their job is to present the business in the best light, within the bounds of what's supportable. Your job is to pressure-test every line.
Ask for source documents for every add-back. Not the summary schedule — the actual invoices, payroll records, bank statements. If the seller can't produce them, the add-back doesn't exist until they can.
Cross-check salary add-backs against payroll records and super contributions. The ATO records are hard to fake. If the seller claims to have paid themselves $80,000 but their super contributions suggest $130,000, one of those numbers is wrong.
Run a quality of earnings review for larger deals. For any acquisition above $500,000, commissioning an independent quality of earnings report is worth the cost. A QoE report specifically interrogates normalisation adjustments and gives you a defensible, independent view of what the business actually earns. It also gives you leverage in price negotiations if the add-backs don't hold up.
Check the financial red flags that often travel with aggressive add-backs. Revenue that's hard to trace, inter-company transactions, related-party arrangements — these often appear alongside add-back schedules that don't survive scrutiny. My article on financial red flags when buying a small business covers what to look for.
Hire an accountant who's bought businesses, not just audited them. This is not the role for your tax return accountant. You want someone who's seen normalised accounts from the buyer side — someone who knows where sellers hide things and how to verify what's real.
Want a structured list of every add-back category to check? The EBITDA normalisation checklist walks through each category with the verification steps alongside it.
Add-Backs in Australian Trades Businesses Specifically
Trades businesses — plumbing, electrical, landscaping, painting, pest control — have a few add-back patterns that appear consistently and are worth knowing before you sit down with a seller's accounts.
Vehicle expenses. Work vehicles are legitimately business expenses, but personal vehicle use is often mixed in. In a single-operator trades business, you might find personal car expenses, fuel for family vehicles, and even boat registration coded under "motor vehicles". Straightforward to add back if you can identify what's personal — and you usually can, once you look at the receipts.
Subcontractor versus employee costs. If the owner's spouse or family member appears as a subcontractor, ask what they actually do. "Admin support" for $40,000 a year might be real; it might not be. These add-backs are legitimate if the work genuinely won't need to be replaced under new ownership, but you need to understand the business's actual staffing needs before you accept that premise.
Owner-operator time in the field. In a small plumbing or electrical business, the owner might be doing half the billable work themselves. If that's the case, replacing them requires either your own time or hiring a licensed tradesperson. An add-back that strips out their labour cost entirely overstates earnings — you'll need to account for a replacement tradesperson's wages, and those aren't cheap in Australia right now.
Industry licences and CPD costs. A legitimate business expense that won't always recur under a new owner if you already hold the relevant licence — but don't add this back if you'll need to hire someone who needs ongoing CPD or licence renewals.
This is worth reading alongside my article on EBITDA multiples for trades businesses in Australia, which covers how the normalised EBITDA figure feeds into the multiple and what buyers are actually paying in practice.
The Difference Between EBITDA Add-Backs and SDE
Worth clarifying since these terms get mixed up. Seller's discretionary earnings (SDE) is a different concept from normalised EBITDA, though both involve add-backs.
SDE adds back the owner's entire salary and all personal expenses, on the assumption that you, the buyer-operator, will replace the owner entirely. It's most commonly used for smaller businesses — those under $500,000 in purchase price — where the buyer is also the manager.
Normalised EBITDA is used when the business is large enough to need a paid manager regardless of whether the buyer works in the business. In this case, you add back expenses that aren't at arm's length, but you still include a market-rate management salary as a cost.
For most Australian trades businesses in the $300,000 to $1.5 million purchase price range, you'll encounter both approaches. The key is to apply them consistently — don't apply an SDE framework but then also include a market-rate management salary as a cost, or you'll double-count.
FAQ
Does EBITDA include add-backs?
Reported EBITDA doesn't include add-backs — it's simply earnings before interest, tax, depreciation and amortisation. Normalised EBITDA does include add-backs: it's EBITDA adjusted for non-recurring or non-arm's length items. In small business sales, "EBITDA" in a sale memorandum usually means normalised EBITDA.
What depreciation do you add back to EBITDA?
Depreciation is already excluded from EBITDA by definition (the D in EBITDA stands for depreciation). If a seller's accounts show "normalised EBITDA" that still includes depreciation as an add-back, the starting figure is probably EBIT (earnings before interest and tax), not EBITDA. Worth checking what the base calculation is before you apply a multiple.
What should be excluded from EBITDA add-backs?
Recurring operating costs, even if the seller frames them as one-offs. Costs you'll need to incur as the new owner. Add-backs where the seller can't produce supporting documentation. And any add-back that depends on optimistic assumptions about how you'll run the business differently.
How much is a business worth based on EBITDA?
Australian small businesses typically sell for 2x to 4x normalised EBITDA, though trades businesses with strong recurring revenue or commercial contracts can push higher. The multiple depends on size, growth, customer concentration, and how owner-dependent the business is. I've written about this in detail for EBITDA multiples in Australian trades businesses.
Add-backs are where a lot of valuation risk hides in small Australian business sales. Sellers present them optimistically; buyers need to verify them rigorously. The combination of a good accountant, source documentation, and a healthy scepticism about anything that seems to double the earnings will serve you well.
This is covered in depth in Module 4 of the Playbook, alongside working capital adjustments, goodwill valuation, and how multiples are applied in practice.
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