Can I borrow from my Canadian corporation without paying any tax?

Yes. Here are a few instances when you can borrow from your corporation tax free.

Short Term Loans for Any Purpose

You can borrow any amount at any time and it is not considered income as long as you pay the loan back within the following taxation year, based on the corporation's fiscal year end. When borrowed at the beginning of the fiscal year and paid at the end of the following fiscal year, that would mean that the loan was for 24 months. This is not meant to be "revolving debt" or series of loans and therefore can only be done once. Conditions apply. Consult a Tax Strategist.

A Long Term Loan to Purchase a Dwelling

A dwelling is defined as, "a house, an apartment in a duplex or apartment building, a condominium, a cottage, a mobile home, a trailer, a houseboat" or even a vacation property... "for the individual's habitation" in 5 year terms at the prescribed interest rate, which was raised to 2% on April 1, 2018. Conditions apply. Consult a Tax Strategist.

A Long Term Loan to Purchase a Motor Vehicle

Provided the loan was "to enable or assist an employee to acquire a motor vehicle to be used by the employee in the performance of the duties of the employee's office or employment." Conditions apply. Consult a Tax Strategist.

A Long Term Loan for the Acquisition of Shares in the Corporation

Provided the loan was "made in respect of an employee of the corporation, or of a related corporation, to enable or assist the employee to acquire fully paid shares of the corporation or a related corporation, from the corporation or related corporation" Conditions apply. Consult a Tax Strategist.