- Almost every business sale involves some post-closing seller involvement — answering a few questions, introducing a supplier, explaining a quirky process.
- Under this approach, a defined period and scope of seller support is treated as part of what the buyer already paid for — no separate invoice, no hourly billing.
- Under this approach, ongoing help beyond a defined baseline is treated as its own paid arrangement — typically through a seller consulting agreement, invoiced separately from the sale…
Once a buyer and seller agree the seller will stick around for a while after closing, a surprisingly contentious question often follows: is that help part of what the buyer already paid for, or does it come with its own bill? Sellers sometimes assume post-closing support is a reasonable professional courtesy included in a sale price they view as fair. Buyers sometimes assume the same thing from the other direction — that the seller should want the business to succeed and help accordingly. Neither assumption holds up well without something written down.
This article looks at how Ontario business sale agreements typically frame paid versus unpaid transition support, the trade-offs of each approach, and how to decide which fits your deal.
Why This Question Comes Up in Nearly Every Deal
Almost every business sale involves some post-closing seller involvement — answering a few questions, introducing a supplier, explaining a quirky process. The disagreement usually isn't about whether any help happens; it's about where the line falls between "reasonable goodwill" and "compensable work." Left undefined, that line tends to move in whichever direction each side finds convenient at the time — which is precisely why it needs to be set in the agreement, not assumed.
Option 1: Transition Support Folded Into the Purchase Price
Under this approach, a defined period and scope of seller support is treated as part of what the buyer already paid for — no separate invoice, no hourly billing.
Where this tends to fit:
- A modest, clearly bounded handover (documented processes, a short window of availability, limited introductions).
- Deals where the seller has significant incentive to see the buyer succeed — for example, where part of the price is an earn-out or a vendor take-back tied to future performance.
- Smaller transactions where the administrative overhead of tracking hours and issuing invoices isn't worth it to either side.
The risk: scope creep. Without a clear boundary on what's included, "reasonable transition help" can expand well past what either side originally had in mind, leaving the seller feeling exploited and the buyer feeling shortchanged if support tapers off.
Option 2: Transition Support Billed Separately (Consulting Fee)
Under this approach, ongoing help beyond a defined baseline is treated as its own paid arrangement — typically through a seller consulting agreement, invoiced separately from the sale itself.
Where this tends to fit:
- Longer or more substantial ongoing involvement — meaningful hours, real operational responsibility, or specialized expertise the buyer genuinely needs.
- Deals where the seller is retiring or leaving the industry and has less personal incentive tied to the business's future performance.
- Situations where both sides want clear, professional boundaries — the seller is now effectively a contractor, not a lingering owner.
The risk: if the fee arrangement isn't well defined, disputes can arise over hours, deliverables, or whether the seller is genuinely earning the fee versus being paid for the same access they were expected to provide anyway.
Comparing the Two Approaches
| Included in Purchase Price | Billed as Consulting Fee | |
|---|---|---|
| Best suited to | Short, defined handover | Longer or substantial involvement |
| Administrative overhead | Lower | Higher (invoicing, scope tracking) |
| Risk of scope creep | Higher, if undefined | Lower, if the agreement is specific |
| Clarity of ongoing relationship | Can blur "owner" and "helper" roles | Clearer contractor-style relationship |
| Tax and structuring considerations | Simpler | Needs its own tax and structuring review |
A hybrid is common too — a baseline period of included support, with anything beyond that scope billed separately once agreed thresholds (hours, weeks, or specific tasks) are exceeded.
Practical Steps to Avoid a Dispute
- [ ] Define, in writing, exactly what support is included at no additional cost — scope, hours, and duration.
- [ ] Set out a clear mechanism for anything beyond that baseline (a rate, a retainer, or a separate consulting agreement).
- [ ] Decide who initiates additional work — the buyer requesting help, or the seller proactively offering it — since ambiguity here often causes friction.
- [ ] Address tax and structuring implications of any consulting fee separately with your accountant; paying a former owner for ongoing services has its own tax treatment, distinct from the sale proceeds.
- [ ] Put the whole arrangement in writing before closing, not as a handshake to be formalized "later."
Frequently asked questions
Is unpaid transition support legally required?
No. There's no legal requirement for a seller to provide any post-closing help at all, paid or unpaid, unless the purchase agreement or a separate document obligates them to. Whatever the parties agree to is what governs — which is exactly why it needs to be written down.
Can a seller refuse to help once support becomes unpaid?
If the agreement clearly defines what's included at no charge and what isn't, then yes — a seller generally isn't obligated to go beyond that scope for free. This is a strong argument for defining the boundary precisely rather than leaving it open-ended.
Does a paid consulting arrangement affect the seller's non-compete?
It can, but not in the way people often assume — the ESA's business-sale exception to Ontario's non-compete ban applies where the seller becomes an employee of the purchaser, so a paid consulting arrangement, on its own, does not bring the seller within that exception. If a non-compete matters to the deal, how the seller's ongoing role is structured — employment versus consulting — is worth working through with a lawyer before the agreements are signed.
Who decides how much a consulting fee should be?
That's a matter of negotiation between the parties — there's no fixed rate or formula, and it depends heavily on the scope of work, the seller's expertise, and market conditions specific to the deal. It's worth discussing with your accountant alongside your lawyer.
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