According to the minister, the volume of the shadow sector of the Ukrainian economy, according to various estimates, ranges from 30% to 50%. "Up to UAH 2-3 billion a month, we would have more revenue if we had overcome corruption and smuggling," Marchenko said.The head of the Ministry of Finance also explained the frequent change of the customs administration. According to the minister, the new head of customs is required to perform two contradictory tasks: filling the budget and transforming the department.