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Delayed Payment Penalties:
Terms That Are Unlawful and Unenforceable
Last Updated: August 22 2026
Question: When is a late fee an illegal penalty in Ontario?
Answer: A late fee may be considered an illegal penalty when it operates like disguised interest on overdue balances, especially if the effective rate exceeds the Criminal Code limit of 60% per annum under Criminal Code, R.S.C. 1985, c. C-46, s. 347, and courts can treat the “late fee” as interest triggered by the original due date rather than the later time it is collected. The fee may still be challenged if it goes beyond actual, documented disbursement recovery costs for collection, as discussed in De Wolf v. Bell ExpressVu Inc., 2009 ONCA 644, and any severability clause will not automatically cure an illegal charge imposed at the outset, as in Garland v. Consumers’ Gas Co., [1998] 3 S.C.R. 112. If you have a contract or invoice with late-payment charges and want an Ontario paralegal to assess whether the wording or calculation creates an unlawful interest rate or unenforceable penalty, SFG Paralegal Services LLP can help, call (888) 398-0121.
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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.
Note: Contact SFG Paralegal Services LLP by phone at: (888) 398-0121 to discuss any specific questions that you may have.
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.
