Ontario Landlord Guide › Free N4 date calculator (Ontario, 7-day rule)

Free N4 date calculator (Ontario, 7-day rule)

Last updated October 23, 2026 · Written for small Ontario landlords

Go to the calculator

Pick how you will give the N4 and the date you will give or send it. The calculator shows the earliest termination date you can write on the notice and the earliest day you can file an L1, using the counting rules in the LTB's N4 instructions (updated September 21, 2026). It runs in your browser. Nothing is sent or saved.

Date you give or send the N4

How you give it
Hand it to the tenant or an adult in the unit Leave it in the mailbox or where mail is normally delivered Slide it under the door or through the mail slot Fax (date printed on the fax) Courier (add 1 business day) Mail or Xpresspost (add 5 days) Tape or post it on the door

Rent due date that was missed (optional, to check you are not too early)

Calculate

How the calculator counts

• 7 days. "The termination date must be at least 7 days after you give the notice to the tenant." Do not count the day you give it.
• Mail or Xpresspost: add 5 calendar days for delivery, then count 7.
• Courier: add one business day for delivery, then count 7. The calculator skips Saturdays, Sundays and Ontario's 9 public holidays. To stay on the safe side it also skips Easter Monday, the Civic Holiday (first Monday in August), Remembrance Day, and the next weekday when a fixed holiday falls on a weekend. That can only make the date later, never earlier.
• Fax: the notice counts as given on the date printed on the fax.
• Not allowed: posting the N4 on the door.
• Earliest L1: the day after the termination date, if the tenant has not paid everything owing and has not moved out. If the tenant pays all the rent owing by the termination date, the N4 is void.
• The date on your N4 can be later than the minimum. "At least 7 days" means a later date is still fine, and a day or two of cushion protects you from a counting slip.

Check it against the LTB's own example

The N4 instructions give this example: an N4 handed to the tenant on March 3 can say March 10. Mailed on March 3, it must say March 15. Try March 3 above and you get the same dates.

This calculator is general information based on the LTB's published instructions. It is not legal advice and it cannot check the rest of your N4 (the rent owing table, the totals on page 1 and page 3, or tenant names). Read the official N4 instructions before you serve.

More on the rules: How many days is an N4 in 2026? · Serving an N4 by mail · N4 7-day rule guide. The free September 2026 changes checklist puts the N4 rules next to the other September changes.

Related: How Many Days Is an N4 in Ontario in 2026? (7 Days, Plus Delivery) · How Do I Serve an N4 by Mail in Ontario? (Add 5 Days) · How to Serve an N4 in Ontario (2026 7-Day Rule) · Sept 21, 2026 LTB Changes: What Ontario Landlords Must Do Now

Official sources

• LTB: Instructions for the N4 notice (updated Sept 21, 2026)
• ontario.ca: Public holidays (Your guide to the Employment Standards Act)
• LTB forms

Not legal advice. This site is general information written by a small Ontario landlord, based on official Ontario and Tribunals Ontario sources as of October 23, 2026. Laws and LTB forms change; check the linked official source before you act, and talk to a lawyer or licensed paralegal (or call the LTB at 1-888-332-3234) about your situation. Not affiliated with the Government of Ontario, Tribunals Ontario or the Landlord and Tenant Board. Full disclaimer.