Yes, Proof of Funds (POF) is mandatory in your initial application. The amount that must be shown is indicated in the Guide and varies depending on the number planning to immigrate. These funds must be your own (not borrowed) and you may be asked to provide bank statements up to 12 months/show source of funds if a large amount is suddenly deposited (for example, from sale of land you would have the documents for proof). Property equity in your name, or spouse's name, can also be used. Cars and jewelry cannot be used.
http://www.cic.gc.ca/english/immigrate/skilled/funds.asp
Number of
Family Members Funds Required
(in Canadian dollars)
1 $11,115
2 $13,837
3 $17,011
4 $20,654
5 $23,425
6 $26,419
7 or more $29,414
Hope this helps.