"The NBU on its own, as always, without any consultations, decided to close the interbank foreign exchange, which definitely does not contribute to the stability of the national currency for which the National Bank is responsible for," he said, opening a government meeting in Kyiv on Wednesday.
"This situation has an overall complex and negative impact on the economy of the country; the one with the imbalance of both the financial system and the national currency," Yatseniuk said.
According to Yatseniuk, $51.5 billion has been sold in the financial market in the past nine months.
"This is almost tenfold amount in relation to the total volume of the foreign currency and gold reserve. That is, the market is full of dollars," Yatseniuk added.
"Every day - I checked the total amount of purchases of foreign currency carried out by banks and overseen by the National Bank from open sources - an average of $100-170 million," he said.
"This means that there is currency in the country, which means that part of the currency was bought and sold for speculative transactions to buy at a lower rate and sell at a higher rate," the prime minister noted.
"We have repeatedly advised our colleagues from the National Bank to bring the situation under strict control in order not to allow the currency to be taken out of the country through the so-called "import" contracts, allegedly for the purchase of goods. And then these goods do not arrive in either 30 or 60, or 90 days, and currency is held outside the country, waiting for a higher rate," he said.
The prime minister noted that this rate "affects the budget, affects the prices ... and affects the overall economy of the country and creates negative inflation expectations, as well as negative reality."
Earlier, the NBU banned banks from buying foreign currency on behalf of clients until Feb. 28.