A Letter to Terminate a Lease Agreement is an official document sent as written notification that one of the parties involved in a commercial or residential lease wishes to terminate the agreement. This type of letter must contain all the necessary information outlining when and why the party wishes to end the lease, including any legal implications involved. It should also provide clear terms for disaffiliation between both parties, such as how to go about the forfeiture process for either renter or landlord. A Letter to Terminate a Lease Agreement is a formal termination notice that is created and sent out in accordance with all applicable laws.