Can I charge more than my rent when subletting in Canada?
In Ontario, no. Section 134 of the Residential Tenancies Act bars a tenant from charging a subtenant more than the tenant pays the landlord. The subtenant can apply to the LTB to recover any overcharge, plus a possible fine. Other provinces have similar anti-profiteering limits.
Do I need the landlord's permission to sublet?
Usually yes. Most leases and provincial laws require the landlord's written consent to sublet, though the landlord cannot unreasonably or arbitrarily refuse. Subletting without required consent can be grounds for eviction. Get consent in writing before you sublet.
What is the difference between subletting and assigning?
In a sublet you remain the tenant and let someone occupy the unit temporarily — you stay liable to the landlord. In an assignment you transfer the tenancy entirely to a new tenant and generally step out of the lease. The rights and approvals differ, so confirm which one you are doing.
Am I responsible if my subtenant damages the unit?
Yes. As the original (head) tenant you remain responsible to the landlord for rent and damage caused by your subtenant. That is why a sublease agreement, a deposit from the subtenant where allowed, and photos of the unit's condition are important protections.