As per CRA, there are 2 different tax consequences that will be applied in 2 cases above:

1) You are Canadian and working remotely in India, you could be considered as a deemed non-resident.

Deemed non-resident when you have residential ties to Canada and you meet the criteria to be a factual resident. However, you are also considered a resident of India qualified for a tax treaty. You have the same filing requirements as a non-resident.

• As a non-resident, you do not have to report world income to the CRA.
• However, the Tax Part I could apply to you for earning income inside Canada according to CRA.

2) You are a Canadian working inside Canada and earning foreign income.

-> All income that you have earned from foreign and domestic sources must be declared on your personal tax return. 

• The amounts are in INR must be converted to Canadian dollars.
• If your foreign income is not tax-exempt due to a tax treaty, you may be able to claim a Foreign Tax Credit 

NOTE: You must contact the Canada Revenue Agency (CRA) to advise you on your residency status as there are too many variables to this question. How do I contact the Canada Revenue Agency (CRA)?

For more information please review:

TurboTax article New Canadians: Your Tax FAQ or Canadian Taxes 101

Canada Revenue Agency (CRA) Individuals - Leaving or entering Canada and non-residents

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