Turkey's central bank raised interest rates by 300 basis points on Wednesday in an emergency move to put a floor under the plunging lira currency and calm investors unnerved by interventions from President Tayyip Erdogan.
The central bank, which had been scheduled to hold its next policy-setting meeting on June 7, said it had increased its top interest rate to 16.5 percent from 13.5 percent, prompting a sharp rally in the lira after it earlier tumbled 5 percent.
Investors had been betting the selloff in the lira - which has fallen about 20 percent so far this year to a series of record lows - would force the bank into action.
The currency reversed course after the decision and was about 2 percent firmer on the day at 4.5656 to the dollar at 1917 GMT. It earlier hit an all-time low of 4.9290.
"It is high time to restore monetary policy credibility and regain investor confidence," Deputy Prime Minister Mehmet Simsek said on Twitter, shortly before the central bank's announcement.
Investors have sold off the lira on concerns about monetary policy, particularly after Erdogan - a self-described "enemy of interest rates" - said last week he expected to assert greater control over policy after elections on June 24. This deepened worries about the ability of the central bank's Monetary Policy Committee to tame double-digit inflation. Following the bank's move, Erdogan said "financial discipline will continue and the necessary things will be done for financial stability".
But he also said the currency's volatility did not reflect economic reality and, echoing his frequent references to foreign threats, warned that he would not let "global governance types" ruin the country. He appealed to Turks not to favor foreign currencies over the lira, and said authorities "will definitely take measures to lower inflation and the current account deficit in very different way after the elections."