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Materiality is the test for whether a number, a note or a mistake in financial statements matters to the people reading them. The IFRS wording is that information is material if leaving it out or getting it wrong could reasonably be expected to influence their decisions. The definition names no dollar amount or percentage, so the call is yours.
That surprises people who expect a rule like “anything under 5% of profit can be ignored”. You’ll hear that shortcut a lot. It’s a rule of thumb that some preparers use, as Wikipedia’s page on materiality in auditing notes, and not a Canadian legal rule, so don’t treat it as one.
What does materiality mean for a small business?
Start with who reads your statements. A bank reading them before it lends, a buyer looking at the business, a partner who isn’t in the day-to-day. IFRS calls these the primary users. If a figure wouldn’t change what any of them decide, it’s probably not material. If it could, it is, however small it looks next to revenue.
IFRS Practice Statement 2, issued on 14 September 2017, is the main official guide. It isn’t mandatory, and it doesn’t add new requirements. It describes a four-step process you can follow: identify what might matter, assess it, organise the information, and review the result. Which standard applies to you depends on the statements you prepare, so check that first. A business that only prepares a tax return isn’t in this world at all.
Is materiality just a percentage of profit?
No, and this is the part most people get wrong. The Practice Statement treats size and nature as two separate questions. A qualitative factor lowers the size at which something becomes material, and a small amount can still be material if its nature is significant. Passing a percentage test doesn’t settle it.
| Question | Why it can make a small item material |
|---|---|
| Does the error turn a profit into a loss? | A lender reads those two results very differently |
| Is the other side a related party? | Readers want to know who you deal with |
| Does it touch a loan condition? | A covenant breach changes what a bank does next |
| Is it a one-off or a pattern? | The same small mistake repeated can add up |
The table is our own checklist of questions, not a quote from the official text. Use it to prompt a second look, not as a rulebook.
How do you work out a materiality threshold?
Many preparers pick a benchmark, such as profit before tax, revenue or total assets, and apply a percentage to get a starting number. Say profit before tax is $200,000 and you choose 5%. Your starting point is $10,000. Use our percentage calculator if you want to try other benchmarks.
Then test that number against the table above. A $3,000 loan from a director sits well under $10,000. If it’s not disclosed and a bank cares about related-party balances, it may still matter. So the threshold tells you where to look harder, not where to stop looking.
Write your benchmark and percentage down, with the reason you picked them, and use the same ones next year unless something changes. That gives whoever reviews your statements a clear trail. It also stops you from moving the goalposts when a number comes in awkward.
What does that look like on a real set of books?
Imagine Lena runs a small bakery corporation in Regina with profit before tax of $200,000. Her accountant sets the starting point at $10,000. During year-end checks they find a $400 invoice booked in the wrong month, a $2,500 supplier credit nobody entered, and a $3,000 loan from Lena herself that isn’t mentioned in the notes. The $400 slip is a ballpark rounding error and gets fixed in passing. The $2,500 goes on a list. The loan gets a note, even though it’s well under $10,000, because a reader of the statements would want to know about it.
Who decides what’s material?
Management does the first pass, and an auditor or reviewer, if you have one, checks it against their own view. If you can’t agree, the reader is the tiebreaker: would this change what the bank or buyer decides? When in doubt, put it in and explain it in a line.
What mistakes come up most with materiality?
The big one is adding errors one at a time. Ten errors of $1,500 each are $15,000 together, and that’s above the $10,000 starting point in our example. Keep a running list of what you’ve left uncorrected and look at the total.
The second is treating a threshold as permission to be sloppy. You can decide not to fix a $40 difference. You can’t decide that accuracy no longer matters. The third is applying the test only to numbers. A missing note can be just as material as a wrong total.
Tax is separate. A tax authority isn’t bound by your materiality threshold for financial statements. If you sell online, the taxable side works differently, and our GST/HST calculator and corporate tax calculator start from the real figures, not from a rounded-off version.
Where do the numbers and definitions come from?
The definition and process come from the International Accounting Standards Board (IFRS Practice Statement 2, 2017) and its summary pages. The 5% and $200,000 figures are an illustration we chose, and so are the $3,000 loan and the bakery amounts. They aren’t official limits. For Canadian private enterprise standards, look at your own reporting framework and, if a bank or an accountant is involved, ask what threshold they’ll apply. If you want to see how a margin moves when costs shift, the profit margin calculator does it in a few seconds.
Frequently asked questions
What is the definition of materiality?
Under IFRS, information is material if leaving it out or misstating it could reasonably be expected to influence decisions of the primary users of the statements.
Is there an official percentage for materiality?
We found none in the IFRS material we read. Any percentage is a policy you choose and document yourself.
Can a small error still be material?
Yes. If it turns a profit into a loss, hides a related-party deal or breaks a loan condition, its nature can matter more than its size.
Do I need to apply IFRS Practice Statement 2?
It isn't mandatory. The IASB says it is optional guidance that adds no new requirements.
Does materiality apply to my tax return?
Not in the way it applies to financial statements. Report the real figures on the return and check the CRA guidance for the form you file.
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