The procedure for registering a commercial lease and the stamp duty associated with it are similar to those of rental contracts. To reduce costs, tenants and lessors sometimes conclude an oral agreement on the lease and avoid the realization of a lease. Sometimes they also document the agreement and set terms for the rental, but choose not to save the document. This is due to the fact that both parties are responsible for paying a registration fee when a rental agreement is drawn up and registered. The lessor is also required to declare his rental income as soon as the lease is valid. However, entering into a lease without registration is illegal and could prove risky for both parties, especially in the event of future litigation. The difference between public and minimum royalties is generally very small.