The Bank of Canada raised its key interest rate by three-quarters of a percentage point Wednesday and signalled this won鈥檛 be the last increase as it continues its battle against high inflation.

The rate hike was in line with what many economists were expecting and brings the bank鈥檚 key rate target to 3.25 per cent.

In the rate announcement, the Bank of Canada says global inflation remains high because of global supply chain disruptions, the effects of COVID-19 and the war in Ukraine.

Domestically, the bank says the economy continues to operate in 鈥渆xcess demand.鈥�

The move Wednesday is the fifth consecutive interest rate increase this year, pushing the bank鈥檚 key rate above the what it calls the 鈥渘eutral range鈥� between two and three per cent.

The Bank of Canada, along with central banks around the world, has been raising interest rates in an effort to cool sky-high inflation after slashing its key rate to near-zero at the start the pandemic.

The increase will feed into other lending rates, making it more expensive for Canadians and businesses to borrow money.

Canada鈥檚 year-over-year inflation rate was 7.6 per cent in July, easing from 8.1 per cent in June as gas prices fell.

However, the bank says its core measures of inflation, which tend to be less volatile, continues to move up while short-term inflation expectations remain high.

鈥淭he longer this continues, the greater the risk that elevated inflation becomes entrenched,鈥� the Bank of Canada said in its press release.

Central banks tend to worry when people and businesses expect inflation to remain high because it can lead to a self-fulfilling prophecy: businesses set future prices higher, while workers negotiate future wage increases to match up with their expectations of inflation.

While debate has been bubbling about whether this will be the last interest rate hike of the year, the Bank of Canada was clear that more increases may be needed to bring inflation down to its two per cent target.

鈥淕iven the outlook for inflation, the governing council still judges that the policy interest rate will need to rise further,鈥� the bank said in its announcement.

鈥淎s the effects of tighter monetary policy works through the economy, we will be assessing how much higher interest rates need to go to return inflation to target.鈥�

The Bank of Canada expects the economy to slow in the second half of this year as global demand weakens and higher interest rates dampen economic activity domestically.

The bank says it is complementing interest rate hikes with the continuation of quantitative tightening.