For a tenancy that has lasted less than six months, a landlord can generally end it without giving a specific reason, but must usually give at least 90 days’ notice. The notice must be in writing, meet legal requirements and give the correct termination date; different rules may apply to tenancies created from 1 March 2026. After the first six months, a landlord will generally need one of the statutory grounds for termination. Check the RTB’s current guidance, or speak to a solicitor, as the outcome depends on the tenancy’s dates and circumstances.