For a month-to-month tenancy, you must give at least one full month's written notice, and it must be received no later than the day before your rent is due. The move-out date is the end of a rental period. Example: if rent is due on the 1st and you want to move out June 30, your written notice must be received by May 31. Notice must be in writing (a signed, dated letter or RTB Form 33) — not by text or social media.