In some states, the tenant must send a notice of termination at least before 30 days. The 30-day notice is advantageous for the lessor because it gives him time to find another tenant. Above all, help to ensure that the owner actually receives the letter. You can either send it by letter and mail, or deliver it by hand. If you need help preparing the letter of termination of the rental agreement, you can find templates online or contact a lawyer. 1. Overview The end of an agreement is as important as its beginning. A change in the business climate or the objectives of the parties may mean that it is time to terminate the contract and exempt the parties from their obligations. A clean break gives security to both parties, respects their obligations and leads to an amicable agreement. But in case a tenant wants to break this agreement, he must make a legal communication.