Delayed Payment Penalties: Terms That Are Unlawful and Unenforceable | Marketing.Legal™
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Delayed Payment Penalties:

Terms That Are Unlawful and Unenforceable



Last Updated: August 22 2026

Question: Are late fees unlawful in Ontario if they effectively charge interest on overdue payments?

Answer: Late fees can be illegal in Ontario when they operate like a charge for the extension of credit rather than a true recovery of specific collection costs, especially if the clause calculates to an interest rate above the Criminal Code limit of sixty (60%) percent per annum; courts look at what the “late fee” really is, and a severability clause may not always save an unlawful charge. In particular, a payment “penalty” that is simply additional money for an overdue balance can be treated as interest, including when a low daily fee later appears to work out to a higher annual rate based on the original trigger date, as discussed in Criminal Code, R.S.C. 1985, c. C-46, s. 347, and Garland v. Consumers' Gas Co., [1998] 3 S.C.R. 112.   If you are drafting or reviewing a contract in Ontario, Marketing.Legal™ can help you tighten compliant payment terms for lawyers, paralegals, and other regulated professionals, so your invoicing and collections language is clearer and less risky, call (800) 551-5751.

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When Is a Late Fee An Illegal Penalty

Delayed Payment Penalties: Terms That Are Unlawful and UnenforceableBusiness 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.  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.

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