Can I make a profit subletting in the US?
It depends on your state, city, and lease. There is no general federal rule, but rent-controlled and rent-stabilized cities restrict it. In New York City a rent-stabilized tenant generally cannot overcharge a subtenant beyond a small furnished surcharge; violations can trigger treble damages and eviction. Many leases also ban subletting outright.
Do I need my landlord's permission to sublet?
Almost always. Most US leases require the landlord's written consent to sublet or assign. Some jurisdictions require the landlord to be reasonable, but subletting without required consent can be a lease violation and grounds for eviction. Get written approval first.
What is the difference between a sublet and an assignment?
In a sublet you keep the lease and let another person occupy the unit, remaining liable to the landlord. In an assignment you transfer the lease to a new tenant and typically leave it. Approvals, liability, and deposit handling differ, so confirm which you are doing before signing anything.
Am I liable if my subtenant stops paying or causes damage?
Yes. As the original tenant you remain on the hook to the landlord for rent and any damage your subtenant causes. Use a written sublease, collect a deposit where allowed, and document the unit's condition to protect yourself.