This year, on the 5th and 6th of February in the Accounting House Polezhanov we organized a seminar on: Changes in tax and social security legislation in 2021 year. with lecturer Petar Zahariev. We, in Accounting house Polezhanov, we want to turn the seminar into an annual event, which will benefit not only taxpayers, and to all individuals and legal entities, who perform accounting activities.