India, June 4 -- Canadian shares look headed for a positive start Wednesday morning, ahead of the Bank of Canada's interest rate decision.

The Canadian central bank is widely expected to leave interest rate unchanged.

Investors are also awaiting news on Trump administration's proposed "Liberation Day" tariffs that will take effect early next month.

The hike in tariffs on steel and aluminum imported into U.S. could weigh on sentiment and limit market's upside.

Descartes Systems, North West Company and Transcontinental Inc. are slated to announced their quarterly earnings today.

On the economic front, data on Canadian labor productivity, the S&P Global Composite PMI reading and Services PMI reading are due this morning.

On Tuesday, Cana...