In the absence of an agreement to the contrary, the costs of stamp duty and registration are the responsibility of the tenant. In addition to the mandatory obligation to register a rental agreement, it is also an important aspect in a lease-tenant relationship. Not only does it facilitate relations between the parties, but it also preserves their interests. The landlord and tenant must never compromise for an oral contract, which is not protected by law, and should therefore always rely on the application of a written agreement. Stamp duty is paid in accordance with the stamp laws of the Indian State where the property is located for the performance of a rental agreement. Under the Indian Constitution, stamp duty on these instruments is a “matter of state” and, therefore, the applicable stamp duty may vary from state to state. An unregyed apartment is never evidence in court. This is only collateral evidence and cannot be used to prove one`s own claims. Therefore, registering the lease is very important to be safe. For example, the Rent Control Act in Delhi allows landlords to increase rent by 10% every three years, while the common practice is to increase rent by 10% per year. If they reconstitute the unit with the prior permission of the tenants, the owners can increase the rental amount by up to 15 percent of the costs of the supplements made in the property. .