In order to develop its "Oz Valley" – a name given in allusion to Silicon Valley, where new economy companies emerged –, in the second half of the last decade, the city began a remodelling of its tax structure to make it oriented towards innovation. Sotero, at the time responsible for the municipality's finances and at the head of the process, says that Osasco invested in creating his system, capable of condensing the issuance of invoices, avoiding double taxation of the ISS and also the issuance of a "mirror note", to avoid companies that carry out many transactions for the same customer per month from having to bear their costs by issuing several bills.