There is no statutory default here. Section 84(1) says owners contribute in the proportions specified in the declaration, and unlike British Columbia the Act supplies no fallback formula at all. An equal split is common, but it is a fact about your declaration rather than a rule the Act provides, which is why this tool asks instead of assuming. Condominium Act, 1998, s. 84(1)
Total allocated
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✓ Verified 22 September 2026 · Condominium Act, 1998, ss. 84, 93
Sources checked automatically every Monday. Last check October 5, 2026, no change found. See the record
| Unit | Proportion | Share | Annual | Monthly |
|---|---|---|---|---|
| Total | — | — | ||
Annual amounts are allocated in whole cents by largest remainder, so the Annual column sums exactly to the budget with nothing lost to rounding. The monthly column is each annual amount divided by twelve and rounded to the cent, so twelve monthly payments can differ from the annual figure by a few cents. Treat it as indicative rather than a billing schedule.
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Section 84(1) is one sentence, and the whole calculator sits on it: “Subject to the other provisions of this Act, the owners shall contribute to the common expenses in the proportions specified in the declaration.”
Read that against British Columbia and the difference is the important part. The Strata Property Act gives BC a statutory default, unit entitlement under section 99, which a BC calculator can fall back on when nobody has the paperwork to hand. Ontario has nothing of the kind. The Act points at the declaration and stops. There is no default, no deemed equal split, and no formula to reconstruct from the Act.
That is why this page opens on the declaration mode rather than an equal split. An equal division is perfectly common, and if that is what your declaration says then the equal mode is the quicker way to enter it. But it is a fact about your declaration, not a rule the Act supplies, and a tool that assumed it would be wrong for a great many corporations while looking entirely right.
Declaration schedules are typed by people, and they do not always total exactly 100. This tool divides each unit share by the sum of all shares rather than by 100, so the arithmetic still allocates the whole budget and nothing leaks. It tells you when the total is not 100 so you can check the schedule.
Treat that flag as a question about the document, not about the maths. If the declaration really does total something other than 100, the declaration is what governs and the proportions still apply in the ratio it sets. If it was a transcription slip, you want to know before the budget goes out.
Section 93(4) says the corporation collects reserve fund contributions from the owners as part of their contributions to the common expenses. The reserve is a line within the budget this page splits, not a separate bill that arrives next to it. That is why the reserve field above asks for a figure that is already inside the annual budget.
Until a corporation has conducted a first reserve fund study and implemented a funding plan under section 94, section 93(5) fixes the total reserve contribution at the greater of the section 93(6) amount and 10 per cent of the budgeted amount required for contributions to the common expenses exclusive of the reserve fund.
Everything turns on the last four words. It is ten per cent of the budget without the reserve line, not ten per cent of the whole budget, and the two are never the same number.
On a budget of $500,000 carrying a $50,000 reserve line, the floor is ten per cent of $450,000, which is $45,000. Read it as ten per cent of the full $500,000 and you get $50,000. Both readings look reasonable on the page and only one of them is the statute. The checker above applies the section 93(5) reading and shows the arithmetic so you can see which figure it used.
Two limits on that check are worth stating plainly. It only applies before a first study and an implemented plan, which is the section 93(5) window. And it reports the ten per cent figure, not the section 93(6) amount, because that one depends on expected repair and replacement costs and the life expectancy of the common elements and assets. Only your reserve fund study can produce it. Where the study amount is higher, the study governs.
Section 84(3) closes the three arguments boards hear most. An owner is not exempt from contributing even if the owner has waived or abandoned the right to use the common elements or part of them, is making a claim against the corporation, or is restricted from using the common elements by the declaration, by-laws or rules.
Section 84(2) closes the other direction. A common surplus goes either against future common expenses or into the reserve fund. Except on termination, it is not distributed back to the owners or their mortgagees.
It divides one budget by one set of proportions. A corporation with separate common expenses for different classes or phases, or a shared facilities agreement apportioning costs with another corporation, has more than one pool to divide and this page does not model that. It also takes the proportions exactly as you type them and never checks them against a registered document, because it has no way to see yours.
If the figure this page produces differs from what your management company has issued, the declaration settles it, not this tool.