The bank's steps on most counts exceeded expectations among analysts, suggesting that it was determined to have an impact and avoid the market disappointment that occurred after its Dec. 3 meeting, when it was seen as having done less than it could have. Stock markets surged Thursday after the ECB's announcement.
At Thursday's meeting, the central bank:
— Cut its main benchmark rate to zero from 0.05%, a mostly symbolic step,
— Lowered the rate on deposits from commercial banks at the central bank to minus 0.40% from minus 0.30%, an unconventional move aimed at pushing banks to lend rather than hoard cash,
— Increased its monthly bond purchases to 80 billion euros ($88 billion) from 60 billion euros, pushing more newly printed money into the economy,
— Added corporate bonds to the assets it can buy, expanding the potential scope of the purchase program,
— Announced long-term cheap loans of up to four years to help support banks.
The negative rate on deposits -- in essence, a tax on bank's excess funds -- is an unusual step aimed at pushing banks to lend rather than leave money at the central bank.
More lending would promote growth and push up inflation from a worryingly low annual rate of minus 0.2%. The rate cut and the other measures to expand stimulus underline how far the ECB sees itself from achieving its goal of inflation of just under 2%.
The bond purchases are paid for by adding newly created money to banks' reserve accounts at the central bank, in the hope that the money will then find its way into the economy through more and cheaper loans. Increasing the money supply is one way to try to lift inflation.
Low or negative inflation has raised fears that Europe may become stuck in an economic quagmire known as deflation, in which stagnant prices weigh on wages, investment and economic growth for years.
And more trouble in Europe -- just as it seems to finally be recovering from the
Europe is a key market for major companies, from automakers Ford and General Motors to technology companies Apple and Samsung. A slide in growth would compound woes from slowing growth in many parts of the world, particularly China.
Yet the ECB's cut of the deposit rate below zero -- also deployed by central banks in Japan, Denmark, Switzerland and elsewhere -- has raised fears of side effects, in particular that it could dent bank profits. Weak banks are less likely to lend, defeating the purpose of the measure.
The ECB's policies have driven market interest rates below zero as well, pushing investors into a topsy-turvy world in which they are expected to pay for the privilege of loaning someone else money. The German government can borrow money at minus 0.54% for two years.
Such negative rates have raised fears about the health of banks, because they hit bank profits. The new round of cheap loans to banks appears aimed at easing those concerns. Four Italian lenders needed a bailout last year. Share prices have fluctuated violently for big European banks such as Deutsche Bank and Credit Suisse after they posted big losses for last year.
One key effect of negative rates and bond purchases has been a lower euro. The ECB insists that it does not use monetary policy to send the currency lower, but the euro has fallen to around $1.10, from around $1.40 in 2014, before markets began to anticipate the bank's current effort at unconventional stimulus through bond purchases, called quantitative easing, or QE, launched in March 2015. A subsequent stimulus increase at the Dec. 3 meeting had less effect on the euro, however.
Cutting rates to deeper levels in the eurozone also puts pressure on the ECB's neighbors. Sweden and Switzerland also have negative rates, in an attempt to keep money seeking higher returns from surging in from the eurozone and driving up their currencies.
Yet despite such unconventional measures such as negative rates, central banks in Europe, Japan, the United States and elsewhere have had little luck recently in pushing up inflation. The Bank for International Settlements, an international organization of central banks, said in a report Sunday that central bank policies were reaching their limit.
The Bank for International Settlements -- and many economists -- say that the key to boosting global growth must come from governments spending more and tackling the obstacles to growth in their own economies. So-called structural reforms would include clearing away regulation that makes it hard to start a business and excessive employee protections that make companies reluctant to hire in the first place.