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Delayed Payment Penalties:
Terms That Are Unlawful and Unenforceable
Last Updated: July 03 2026
Question: When is a late fee an illegal penalty in Ontario contracts?
Answer: A late fee can be illegal if it effectively operates like interest on overdue money and the resulting annual rate exceeds the Criminal Code limit of 60% per year, which can make the clause unenforceable; courts look at the substance, not the label, so a “late fee” that’s calculated as a percentage or that spikes over time can be treated as unlawful interest. In Garland v. Consumers' Gas Co., Garland v. Consumers' Gas Co., [1998] 3 S.C.R. 112, and De Wolf v. Bell ExpressVu Inc., De Wolf v. Bell ExpressVu Inc., 2009 ONCA 644, Ontario courts focus on whether the charge truly recovers a disbursement cost or is really a disguised finance charge. If you are dealing with an invoice or contract in Ontario that includes a late fee or payment penalty, Woodcock Legal Services can help you assess enforceability, review the calculation method in your agreement, and explain practical next steps with professional legal services from a paralegal in Ontario, so call (613) 334-6721 today for guidance.
When Is a Late Fee An Illegal Penalty
A business will sometimes use the threat of additional fees as a financial motivator to encourage customers to make timely payments; however, a contract may become unlawful and unenforceable if a contract contains an illegal late fee. A late fee is illegal, if the amount violates the Criminal Code, R.S.C. 1985, c. C-46, section 347, wherein it is prescribed that charging interest rate beyond a rate of sixty (60%) percent per annum is a criminal act. Any contract that prescribes an interest rate in excess of the maximum allowable sixty (60%) percent is therefore an illegal contract; Garland v. Consumers' Gas Co., [1998] 3 S.C.R. 112. Do note that a severability clause may save the entire 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 considerable amount of online searches featuring “lawyers near me” or “best lawyer in” typically indicate a demand for prompt and proficient legal support rather than a particular designation. In Ontario, licensed paralegals are governed by the same Law Society that regulates lawyers and hold the authority to represent clients in specified litigation cases. Skills in advocacy, legal evaluation, and procedural knowledge are fundamental to this position. Woodcock Legal Services offers legal representation within its licensed parameters, focusing on strategic positioning, evidence preparation, and compelling advocacy designed to attain effective and advantageous outcomes for clients.
