Seller’s discretionary earnings for an ecommerce business is the store’s pre-tax profit plus the full pay and perks of one working owner, interest, depreciation, amortization and genuine one-time costs. Buyers accept add-backs that are documented and would not continue under new ownership, and they reject anything the store needs to keep selling, such as core ad spend, staff, apps and fulfillment.
Because most online stores are priced as a multiple of this number, every add-back a buyer refuses lowers the price several times over. This guide shows how to calculate SDE from a Shopify or Amazon P&L, which adjustments hold up, which get cut, and how to prove the ones you claim.
Key Takeaways
- SDE shows what the store earns for one full-time owner-operator: net profit before tax, with that owner’s salary, benefits and personal expenses put back in.
- An add-back survives diligence only if it is documented, discretionary or non-recurring, and would not be a cost for the next owner.
- Advertising that drives sales, required staff and contractors, software, 3PL and payment fees are operating costs. Buyers remove them from any add-back schedule.
- Buyers also make negative adjustments, such as charging a market wage for unpaid family labor or removing income that will not repeat.
- A reconciled, line-by-line add-back schedule tied to invoices, tax returns and platform payouts is worth more than an aggressive SDE figure that falls apart in diligence.
What Is SDE in Business, and Why Do Ecommerce Buyers Use It?
SDE (seller’s discretionary earnings) answers one question a buyer has about a small or mid-sized store: if I take over and run this business myself, how much cash will it produce for me each year before taxes and debt payments? Reported net income rarely answers that, because owners run personal costs through the business, pay themselves in ways that suit their tax situation and book one-off projects as ordinary expenses.
Recasting the P&L to SDE strips out those choices so different stores can be compared on the same footing. That is why most listings for owner-run Shopify brands, Amazon FBA businesses and multichannel stores quote SDE, and why ecommerce business brokers spend much of the preparation phase building and defending the add-back schedule before a store goes to market.
SDE vs net income
Net income is what your tax return and accounting software report after every expense, including your salary, loan interest and non-cash charges. SDE starts from pre-tax profit and adds those owner-specific and non-cash items back. A store can show a modest net profit and still have a healthy SDE if the owner takes a large salary, or a thin SDE if the profit depends on the owner working sixty unpaid hours a week.
How to Calculate SDE for an Ecommerce Store
The formula is simple: pre-tax net income, plus one owner’s total compensation, plus interest, depreciation and amortization, plus documented discretionary and one-time expenses, minus income or savings that will not continue. The work is in the inputs. For an online store, follow these steps in order.
- Use trailing twelve months (TTM) plus the last two or three full years. Buyers want the current run rate and enough history to see whether a cost really is one-time.
- Reconcile revenue to the platforms. Shopify payouts, Amazon settlement reports, PayPal, Stripe and any wholesale invoices should tie to the revenue in your books. Unreconciled revenue makes every add-back look suspect.
- Put the P&L on an accrual basis. Cash-basis books distort profit when you pay for a large inventory order in one month and sell it over six. Match cost of goods sold to the units actually sold, at landed cost.
- Start from pre-tax net income. Remove income tax so the figure is comparable regardless of entity type.
- Add back one owner’s compensation. Salary or draws, payroll taxes on that salary, health insurance and retirement contributions for the owner who works in the business.
- Add back interest, depreciation and amortization. Interest on debt the buyer will not assume and non-cash charges such as amortized software or equipment depreciation.
- Add back verified discretionary and one-time items. Each needs an invoice, a one-line explanation and evidence that it is not part of normal operations.
- Subtract anything that flatters the numbers. Unpaid family labor at a market rate, one-time income such as a legal settlement or a supplier rebate that ends with the sale, and costs the buyer will face that you do not, such as rent you pay below market to a related party.
The result is your recast earnings. If you want a first estimate of what that figure could mean for price, our free business valuation calculator applies a multiple range to it in a few minutes.
Ecommerce Add-Backs Buyers Usually Accept
These adjustments are standard across small business sales. Buyers and their accountants expect to see them, provided the paperwork matches.
Owner compensation and benefits
The salary, distributions, payroll taxes, health insurance and retirement contributions of one working owner are the core of SDE. If two partners both draw a salary, only one is normally added back in full. The second partner’s role has to be replaced at a market wage unless the buyer can show that the work disappears.
Interest, depreciation and amortization
Interest on an inventory line of credit, merchant cash advance or owner loan is added back when that debt is paid off at closing. Depreciation and amortization are non-cash. Buyers will still look at how often you replace equipment, photo gear or warehouse racking, because that capital spending is a real cost even if it is not on the P&L as an expense.
True one-time projects
Costs that happened once and will not recur for the next owner are accepted when the invoices tell a clear story. Typical ecommerce examples:
- A platform migration, for example moving from WooCommerce or Magento to Shopify, including the one-off theme build
- A full rebrand or packaging redesign with a defined start and end date
- Legal fees for a resolved trademark opposition, a settled IP dispute or a one-time Amazon account reinstatement appeal
- Catch-up bookkeeping or a one-time cleanup of past sales tax filings
- A severance payment or a recruiting fee for a role that has since been filled
Personal expenses run through the business
Personal phone plans, a family vehicle, personal travel or subscriptions paid from the business account are accepted when they are clearly personal and documented. Mixed-use items get split. Expect a buyer to accept only the share you can show was not for the store.
Add-Backs Buyers Challenge or Reject
Most disputes in ecommerce deals come from expenses that sit between operating cost and owner choice. The table below shows how buyers usually treat the add-backs that come up most often in online store sales, and what it takes for each one to hold up.
| Proposed add-back | Usual buyer view | What makes it hold up |
|---|---|---|
| Full owner salary when the owner runs ads, buying and customer service | Accepted for SDE, but the buyer prices in replacing that work | A written list of owner tasks, hours per week, and which can be outsourced at a known cost |
| Second owner or partner salary | Challenged | Proof the role ends at closing, or a market-rate replacement cost deducted |
| Family member on payroll | Accepted only for the amount above market pay | Job description, hours and a market wage for the same work |
| One-time agency or consultant fees | Accepted if truly non-recurring | Signed scope of work with an end date and no similar spend in prior years |
| Paused ad tests or a new channel launch (TikTok, Walmart, wholesale) | Usually rejected | Evidence that the test is not a yearly pattern and that core ad spend stayed constant |
| Inventory write-offs and liquidation losses | Challenged | Only the amount above the store’s normal yearly write-down, supported by inventory records |
| Amazon long-term storage fees, removals and returns | Rejected | These are operating costs of the channel; reduce them before selling instead |
| Apps, tools and software subscriptions | Rejected unless cancelled | Proof of cancellation and that nothing replaced the tool |
| Website redesign | Challenged | Show the site is not redesigned on a regular cycle; buyers may spread the cost over several years |
| Product development, samples and molds | Challenged | Distinguish a one-off tooling cost from ongoing new-product work |
| Trade shows and masterminds | Usually rejected | Show the event did not drive sales and is not part of how the brand finds wholesale accounts |
| Chargebacks and fraud losses | Rejected | Treated as a normal cost of selling online |
| Cash or off-book income | Never accepted | Not recoverable; income that is not in the books and on the tax return does not count |
Why ad spend is the hardest add-back to win
Owners often argue that part of their ad budget was experimental or wasted and should be added back. Buyers see it differently: if revenue in the TTM period depended on that spend, cutting it would also cut sales. An ad test can work as an add-back only when the spend was clearly separate from the campaigns that produce revenue, ran once, and did not lift sales. Show campaign-level data, not just a total from your P&L.
Inventory write-offs and aged stock
A single large write-down of a discontinued product line can be a fair add-back. A store that writes off stock every year has an inventory planning cost, and buyers will treat the normal level as an expense. They may also reduce the price for slow-moving inventory still on hand, separately from SDE.
SDE vs EBITDA: Which One Will Buyers Use for Your Store?
The two measures start from the same profit. The difference is the owner. SDE adds back one owner’s full pay. Adjusted EBITDA assumes every role, including the general manager, is paid at market rate, so the owner’s salary stays in as a cost. Which one a buyer uses depends mostly on the size of the store and who is likely to buy it.
| SDE | Adjusted EBITDA | |
|---|---|---|
| Owner pay | Added back in full for one working owner | Replaced with a market salary for every role |
| Typical store | Owner-operated stores, often with a few contractors | Brands with a team that runs day to day without the owner |
| Typical buyer | Individual buyers, often using SBA financing, and small holding companies | Private equity firms, strategic buyers and brand holding companies |
| What the number tells the buyer | Cash available to an owner-operator before debt service | Profit available to an investor who hires management |
| Same add-back discipline? | Yes | Yes; one-time and personal items are adjusted the same way |
There is no fixed cut-off between the two. As a store grows and the owner steps back from daily work, the conversation shifts from SDE to EBITDA. Multiples also differ: an SDE multiple is applied to a larger earnings figure, so it is normally lower than an EBITDA multiple for the same business. Our guide to valuing an online store explains how buyers choose the multiple, and the income-based approach to valuation covers the wider methods behind it.
Worked Example: Recasting a Hypothetical Shopify Brand
The figures below are hypothetical and illustrate the process only. Picture a DTC skincare brand selling on Shopify and Amazon with about $2.4 million in TTM revenue, one owner and two part-time contractors. The tax return shows $186,000 of pre-tax profit. The owner’s first add-back schedule claims an SDE of $446,300. After the buyer’s diligence, the accepted figure is $345,700.
| Line | Seller claimed | Buyer accepted | Why |
|---|---|---|---|
| Pre-tax net income | $186,000 | $186,000 | Ties to tax return and reconciled payouts |
| Owner salary | $90,000 | $90,000 | One working owner |
| Payroll taxes on owner salary | $6,900 | $6,900 | Follows the salary |
| Owner health insurance | $14,400 | $14,400 | Personal benefit, documented |
| Interest on inventory line of credit | $11,200 | $11,200 | Line is repaid at closing |
| Depreciation and amortization | $8,500 | $8,500 | Non-cash |
| Shopify migration and theme rebuild | $38,000 | $38,000 | One project, signed scope, no similar spend in prior years |
| Trademark opposition legal fees | $12,500 | $12,500 | Matter closed, invoices provided |
| Vehicle and phone | $9,800 | $6,200 | Only the documented personal share |
| Paused TikTok Shop ad test | $42,000 | $0 | The brand has tested a new channel every year, so buyers treat it as ongoing marketing |
| Write-off of a discontinued product line | $27,000 | $8,000 | Only the amount above the store’s normal yearly write-down |
| Unpaid family member handling customer service | $0 | -$36,000 | Market cost of replacing the work |
| SDE | $446,300 | $345,700 | Gap of $100,600 |
At an illustrative multiple of 3x, chosen only to show the arithmetic and not a quote for any business, that $100,600 gap is worth about $302,000 of price. The owner did not lose that money in diligence. It was never supported in the first place. Listing with the buyer’s figure from day one would have avoided a renegotiation late in the process, which often costs more than the disputed amount because it also damages trust.
Proving Your Add-Backs: The Records Buyers Ask For
A buyer’s accountant or quality of earnings provider will test every adjustment. Prepare the evidence before you list, not after a letter of intent.
- Build an add-back schedule. One line per item with the amount by year, the general ledger account it sits in, a one-sentence reason and a reference to the supporting document.
- Attach the paper trail. Invoices, contracts, statements of work and receipts for every adjustment above a few hundred dollars.
- Tie the totals to your tax returns. If the P&L and the return disagree, explain the difference in writing. Buyers who finance through an SBA lender will be underwritten largely from the returns.
- Show three years of history. A cost that appears once is a one-time item. A cost that appears every year under a different name is not.
- Separate personal spending. Move personal expenses to a personal card well before the sale so the TTM period needs fewer adjustments.
- Keep platform reports ready. Shopify payout reports, Amazon settlement and fee reports, and ad account exports let a buyer check the numbers without relying on your summary.
Our ecommerce due diligence checklist lists the full set of records buyers request, and this overview of the paperwork a business sale requires covers the legal and tax side.
How SBA lenders view add-backs
Many buyers of stores in the lower and middle price range use SBA 7(a) loans. SBA rules require the business’s historical cash flow to cover the new loan payments with room to spare, and lenders generally start from the federal tax returns. Lenders tend to accept owner compensation, interest on debt being repaid, and depreciation without much debate. They are more cautious with large one-time items and mixed personal expenses, and they do not accept income that never appeared on a return. Policies vary by lender, so an add-back a cash buyer accepts may still be cut from the financing model.
Ways to Raise SDE Before You Sell, and Moves That Backfire
The most reliable way to increase SDE is to need fewer add-backs. Changes started a year or more before listing can appear in a complete twelve-month record by the time buyers look.
- Run the business cleanly. Stop paying personal costs from business accounts and keep one owner on payroll at a reasonable salary.
- Cut waste that buyers would also cut. Unused apps, duplicate tools, overlapping agencies and Amazon storage fees on slow sellers.
- Fix landed cost and pricing. Renegotiated freight or supplier terms count in full only if they are in place and transferable to the buyer.
- Pay family members at market rates, or replace them. It removes a negative adjustment and makes the operating cost easy to verify.
- Document the owner’s role. A clear task list with hours per week helps a buyer judge how much of the SDE they must spend on staff.
Some moves look good on paper and hurt you in diligence: cutting ad spend sharply in the months before a sale (revenue usually follows), pushing an untested product launch, buying a large inventory order right before closing, or reclassifying ongoing costs as one-time. For a longer runway, our 18-month ecommerce exit plan lays out what to tackle in each quarter. If Amazon is your main channel, see how DealPipe handles Amazon FBA business sales.
When to Talk to a Broker
Talk to an advisor before you publish an SDE figure anywhere, including in a conversation with an aggregator or a competitor who approaches you. Once a buyer has seen a number, lowering it later costs credibility. A broker who works on online stores will recast your P&L, decide which add-backs to claim and which to drop, and prepare the evidence so the figure holds through diligence.
If you are preparing to sell your ecommerce business, DealPipe works on a 100% performance basis: no upfront fees or retainers, and a success fee only when the business sells. The exact terms are set out for your deal in a free, confidential consultation.
Your SDE is the number every price conversation will start from, so it pays to get it right before a buyer sees it. Ready to find out what your store’s recast earnings support? Book a free, confidential consultation with a DealPipe advisor, and we will review your add-back schedule line by line.
Frequently Asked Questions
SDE, or seller’s discretionary earnings, is a business’s pre-tax profit plus the total compensation of one working owner, interest, depreciation, amortization and documented one-time or personal expenses. It shows how much cash a single owner-operator could take from the business each year before taxes and debt payments, and it is the earnings figure most small business sales are priced on.
Start with trailing twelve months of pre-tax net income from accrual-basis books reconciled to Shopify, Amazon and processor payouts. Add one owner’s salary, payroll taxes and benefits, interest on debt being repaid, depreciation and amortization, and documented one-time or personal costs. Subtract unpaid family labor at market rates and any income that will not continue.
Both start from the same profit, but SDE adds back one working owner’s full compensation while adjusted EBITDA keeps a market salary for every role, including management. SDE suits owner-operated stores sold to individual buyers. Adjusted EBITDA is used for larger brands with a team, usually acquired by private equity firms, strategic buyers or brand holding companies.
Add-backs are expenses on the profit and loss statement that a new owner would not incur, so they are added back to profit when calculating SDE or adjusted EBITDA. Common examples are the owner’s salary and benefits, interest on debt repaid at closing, non-cash charges, personal expenses paid by the business and genuinely one-time projects.
Usually not. Buyers treat advertising that produced the revenue in the trailing twelve months as an operating cost, because removing it would also reduce sales. A one-off ad test can qualify only if it ran separately from revenue-driving campaigns, did not lift sales and is not a yearly pattern, with campaign-level data to prove it.
Sometimes. A single, documented write-down, such as clearing a discontinued product line, can be added back. If the store writes off stock every year, buyers treat the normal yearly amount as an operating cost and accept only the portion above it. Aged inventory still on hand may also reduce the price separately.
SBA lenders accept common add-backs such as owner compensation, interest on debt being repaid and depreciation, but they underwrite largely from federal tax returns and look for documentation. Large one-time items and mixed personal expenses get closer review, and unreported income is never counted. Acceptance varies by lender, so prepare a written schedule with evidence.
