The expert told how the tax service is looking for "evaders" The federal tax service is increasingly monitoring unregistered business activities through social networks and advertising sites. Price lists, work photos and customer reviews can become grounds for an audit, said tax security expert Elsa Perpelkina. Advertising the services in itself does not constitute a violation. The assessors are interested in undeclared income, which can be confirmed through correspondence, receipts and test purchases. The expert mentions that failure to pay taxes is subject to a fine of 20% of the amount owed, and with proven intent - 40%, in addition to the tax itself and fines. A separate fine is given for business activity without registration. The expert advises to register as a freelancer or sole entrepreneur to avoid problems with the law.