Courtready’s Ontario Superior Court Litigation Deadlines Calculator
This calculator helps you compute deadlines under the Rules of Civil Procedure.
Don’t let fake cases become real law. Try CaseCheck →Use this free tool to calculate litigation deadlines under Ontario’s Rules of Civil Procedure. This calculator determines the date on which a deadline falls by applying Rule 3.01 (computation of time) and Rule 1.03 (definition of “holiday”), including weekends and Ontario court holidays.
DO NOT USE THIS CALCULATOR FOR SMALL CLAIMS COURT DEADLINES. Use this one instead. This calculator does not account for special holidays proclaimed by the Governor General or Lieutenant Governor under Rule 1.03(1)(m). Always check for any proclaimed holidays that may affect your deadline.
Disclaimer: This tool is provided for reference purposes only. Always verify deadlines against applicable law and seek legal advice when appropriate. For questions or to report an error, please email Tom at admin [at] courtready.ca.
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The “BETWEEN” option uses the rule 3.01(1)(a) convention: exclude the first date, include the second.
Explanation
Make sure the cases you’re relying on are real.
Courtready tracks fictitious, AI-hallucinated citations across Canadian courts and tribunals. CaseCheck helps you verify your authorities before you file.
Make sure the cases you’re relying on are real.
Courtready tracks fictitious, AI-hallucinated citations across Canadian courts and tribunals. CaseCheck helps you verify your authorities before you file.
2026 Holidays under the Rules of Civil Procedure
Our calculator automatically excludes the dates below when computing deadlines under the Ontario Rules of Civil Procedure.
When a deadline falls on a holiday or weekend, it is automatically extended to the next business day under Rule 3.01.
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CaseCheck extracts every citation in your filing and cross-references each one against Canadian case law, so you can spot what’s real and what’s not before you file. Courtready also tracks fictitious, AI-hallucinated citations across Canadian courts and tribunals.
Ontario Litigation Deadline Calculator
Courtready’s Ontario Litigation Deadline Calculator makes it easier for you to stay on top of litigation deadlines in the Ontario Superior Court of Justice. Check out our other free tools below.
This calculator determines the date on which a litigation deadline falls by applying Rule 3.01 (computation of time) and Rule 1.03 (definition of “holiday”), including weekends and Ontario court holidays.
Disclaimer: This tool is provided for reference purposes only. Always verify deadlines against applicable law and seek legal advice when appropriate. For questions or to report an error, please email admin [at] courtready.ca.
Common Questions
What does the Ontario Superior Court Litigation Deadline Calculator do?
This calculator helps you compute litigation deadlines under Ontario’s Rules of Civil Procedure by applying Rule 3.01 (how to count time) and Rule 1.03 (what counts as a holiday), including weekends and Ontario court holidays.
When should I use “after,” “before,” or “between” in the calculator?
Use “after” when a rule gives you X days after an event, “before” when a rule requires action X days before an event, and “between” when you need to count the number of days between two dates. The calculator applies the correct counting rule for each option.
How does the calculator treat weekends and court holidays?
The calculator automatically adjusts for weekends and Ontario court holidays. For deadlines of 7 days or less, it excludes holidays from the count. For longer periods, it counts holidays, but then pushes the deadline forward if the final date falls on a holiday.
What happens if a document was served after 4:00 PM or on a holiday?
If you indicate that service occurred after 4:00 PM or on a holiday (for non-originating documents), the calculator automatically treats service as occurring on the next non-holiday, as required by Rule 3.01(1)(d).
Why does the calculator sometimes give two dates for “before” deadlines?
When a “before” deadline lands on a holiday, the calculator shows: the rule-based date (next non-holiday), and a recommended earlier date (previous non-holiday). This helps you preserve the full notice period and avoid unintentionally shortening the required timeline.
How is this different from the Small Claims Court deadline calculator?
This calculator is for Ontario Superior Court of Justice matters governed by the Rules of Civil Procedure. Small Claims Court proceedings are governed by a separate set of rules — the Rules of the Small Claims Court — which have their own deadline-counting conventions. If you are calculating a deadline in a Small Claims Court matter, use Courtready’s Small Claims Court deadline calculator instead.
Can I save or share my calculation?
Yes. After running a calculation, the result box gives you several options. You can copy the calculation to your clipboard as plain text, add the deadline to your calendar (Google Calendar, Outlook, or Apple/iCal), or share the calculator on Facebook, Twitter, LinkedIn, WhatsApp, or Messenger. Calendar events include the calculation type, event date, and number of days for easy reference.
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