- The underlying principle is straightforward: whoever benefits from an expense, or is responsible for the period it covers, should bear that cost.
- None of these categories has a mandatory legal treatment — they are exactly the kind of detail that should be nailed down in the purchase agreement or a closing statement schedule, not…
- Prorating rent is one thing; actually transferring the lease to the buyer is another, and the two are easy to conflate.
Closing day rarely lines up neatly with a billing cycle. Rent is usually paid a month at a time, utility bills cover a period that straddles whatever date the deal closes, and the seller may have already paid for insurance or a software subscription that stretches well past the handover. Sorting out who pays for what — and who gets reimbursed for what — is a routine but easy-to-overlook part of closing.
This is generally handled through prorations on a closing statement: a fair, day-based split of prepaid and accrued operating expenses between buyer and seller.
The Basic Idea Behind Proration
The underlying principle is straightforward: whoever benefits from an expense, or is responsible for the period it covers, should bear that cost. If the seller already paid this month's rent in full but is handing over the business partway through the month, the buyer generally owes the seller for the portion of the month the buyer will occupy the space. The reverse applies to accrued but unpaid expenses — if a utility bill covering time before closing hasn't been paid yet, the seller typically still owes that portion even though the buyer will receive and pay the eventual bill.
The exact method for calculating each proration is a matter of negotiation and accounting practice between the parties, not something fixed by law — the purchase agreement or closing statement should say clearly how each category is being split.
Common Categories That Get Prorated
| Category | Typical treatment |
|---|---|
| Rent | Split based on occupancy before/after the closing date, particularly where rent is paid monthly in advance |
| Utilities (hydro, gas, water, internet) | Split based on usage or billing period, often estimated where a mid-cycle meter reading isn't available |
| Property or business insurance | Prorated if the buyer is taking over an existing policy, or handled as a clean cut-off if the buyer arranges new coverage |
| Prepaid subscriptions, software licences, or service contracts | Addressed case by case — some transfer to the buyer with a credit to the seller, others are simply cancelled |
| Property taxes (where real property is part of the deal) | Commonly prorated between buyer and seller for the tax year in which closing occurs |
None of these categories has a mandatory legal treatment — they are exactly the kind of detail that should be nailed down in the purchase agreement or a closing statement schedule, not left to be sorted out informally after the fact.
Rent Proration and the Landlord Consent Question
Prorating rent is one thing; actually transferring the lease to the buyer is another, and the two are easy to conflate. If the business operates from leased commercial premises, the buyer generally cannot simply start paying rent and occupying the space — the lease itself typically needs to be formally assigned, which usually requires the landlord's consent.
Under Ontario's Commercial Tenancies Act, where a lease prohibits assignment without the landlord's consent, that consent is deemed not to be unreasonably withheld — unless the lease's own wording says otherwise. In practice, this means the lease's specific terms still come first: some leases impose additional conditions (financial disclosure, a guarantee from the buyer, a formal assignment agreement) before consent will be given. Rent proration on the closing statement should be treated as a separate, purely financial adjustment from the legal process of getting the lease properly assigned — closing on the business without the assignment actually completed can leave the buyer occupying premises without a secure legal right to be there.
Practical Tips to Avoid Disputes
- Agree on a specific proration date and method for each category well before closing, ideally in the purchase agreement itself.
- Request current utility bills and the most recent rent statement early in due diligence, rather than trying to estimate figures at the last minute.
- Start the landlord consent process for any lease assignment as early as possible — it can take time and may involve conditions neither side anticipated.
- Put the final agreed prorations in writing as part of the closing statement, signed by both sides, so there's a clear record if a question comes up later.
- Don't assume every category will be prorated the same way — insurance and software licences, for example, are often simply cancelled and rearranged rather than split.
Frequently asked questions
Is proration required by law, or just common practice?
It's common practice, not a legal requirement. Nothing forces a business sale to include prorations — but without them, one side typically ends up unfairly bearing costs for a period they didn't benefit from, so most purchase agreements address it directly.
What happens if a utility bill for the pre-closing period arrives after closing?
This depends on what the purchase agreement or closing statement says. Well-drafted agreements anticipate this by including a mechanism — sometimes a holdback, sometimes a simple post-closing reimbursement obligation — for bills that arrive later than closing.
Does prorating rent mean the lease automatically transfers to the buyer?
No. Prorating rent is a financial adjustment between buyer and seller; it doesn't replace the separate legal step of assigning the lease itself, which generally requires the landlord's consent under the lease and the Commercial Tenancies Act.
Who is responsible for arranging insurance from the closing date forward?
This is a negotiated point. Some buyers take over the seller's existing policy (where the insurer allows it), while others arrange entirely new coverage effective on closing — either way, this should be settled before closing, not discovered afterward.
This is a business purchase or sale question
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