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Delayed Payment Penalties:
Terms That Are Unlawful and Unenforceable
Last Updated: June 12 2026
Question: When is a late fee considered an illegal penalty in Ontario, and can I challenge it?
Answer: In Ontario, a “late fee” can be treated as interest or a penalty, and it may be unenforceable if it’s really a disguised interest charge that effectively exceeds 60% per year under Criminal Code, R.S.C. 1985, c. C-46, s. 347, or if it’s far beyond the creditor’s genuine collection costs, as courts have recognized in Garland v. Consumers’ Gas Co., [1998] 3 S.C.R. 112 and De Wolf v. Bell ExpressVu Inc., 2009 ONCA 644. For practical help reviewing your contract, calculating the true annualized rate, and preparing the right documents or steps, contact VP Legal Services & Notary for Paralegal and Notary Services across Ontario at (437) 286-1499 to protect your rights and avoid paying unlawful fees.
When Is a Late Fee An Illegal Penalty
Business owners often attempt to encourage prompt payment by imposing delayed payment penalties (late fees) upon those who fail to pay on time. Unfortunately, contracts may be deemed unlawful and therefore unenforceable when the contract is written in such a way as to impose, or appear to impose, an improper late fee. Commonly, the late fee calculates to an amount that violates the Criminal Code, R.S.C. 1985, c. C-46, section 347, whereas charging an interest rate beyond sixty (60%) percent per annum is deemed a criminal offence. A contract prescribing an interest rate that exceeds the sixty (60%) percent is an illegal contract; Garland v. Consumers' Gas Co., [1998] 3 S.C.R. 112; albeit, if the contract contains a severability clause, then such a clause may preserve the complete contract from becoming void.
While a business may attempt to disguise interest as a late fee, courts will view a late fee for what a late fee is - an interest charged as an additional amount of money due, and arising from, the extension of credit for an outstanding balance of monies owed. An exception applies if it is shown that the late fee genuinely correlates to the recovery of a disbursement cost incurred in the collection of the debt rather than as an additional fee correlated to the further advancement of the debt; De Wolf v. Bell ExpressVu Inc., 2009 ONCA 644; Garland, supra.
As an example, consider the business that charges a ten 00/00 ($10.00) dollar late fee when a monthly payment of one hundred 00/00 ($100.00) is overdue by seven (7) days. This late fee actually calculates as a ten (10%) percent additional charge upon the actual amount due. This ten (10%) percent late fee imposed upon a one week overdue account produces an exorbitant, and unlawful, five hundred twenty (520%) percent annual interest rate. Note that the fact that this interest appears lower, and actually does calculate lower, over a greater period of time, it is the trigger date that causes the unlawfulness. While the $10.00 late fee charged on the 7th day is unlawful, it might appear that if six months later the same $10.00 is still outstanding that the amount, by then, is a lawful twenty (20%) percent interest; however, the very fact that the amount was unlawful when originally imposed continues to make the amount unlawful. What was at first unlawful fails to become lawful.
Conclusion
When an agreement contains a clause for late fees or other form of delayed payment penalty, such is viewed as an attempt to charge interest on monies due. Where the late fees, as a disguised interest, calculate to an interest rate beyond the legally allowable interest rate, the late fees are viewed as unlawful. Furthermore, even if the interest rate may be legal, late fees or a payment penalty that goes beyond the costs of recovering the genuine amount due are, generally, deemed unenforceable.
NOTE: A significant amount of online searches relating to “lawyers near me” or “best lawyer in” typically indicate a desire for prompt and competent legal assistance rather than a particular designation. In Ontario, “licensed paralegals” fall under the regulation of the same Law Society that governs lawyers and they possess the authority to advocate for clients in specific litigation scenarios. Skills in advocacy, legal evaluation, and procedural knowledge are fundamental to this profession. VP Legal Services & Notary offers legal representation within its licensed boundaries, focusing on strategic planning, evidence preparation, and compelling advocacy aimed at securing effective and beneficial outcomes for clients.

