Hi,
I only have my father and sister in my family, and do i still need to show a 3 year income proof even though my father has a savings equivalent to more than 200 thousand CAD dollars.
Also is it that I have to only show my income proof or it can be a combination of my and my spouse both.
This is the requirement to sponsor parents. Even if it's only you and your dad, you still need to show 3 years of income proof.
So for your case, it's you, your spouse, your father and your sister. (family size to look up the minimum income to qualify to sponsor)
Read up the guideline and get some understanding of the process. Looks like it will be a few more years before you can even try to sponsor.
But it's will good to know roughly how things work and as others have replied, it's likely to change in the next few years.