When you withdraw funds from an RRSP, your financial institution withholds the tax. The rates depend on your residency and the amount you withdraw. For residents of Canada, the rates are:
10% (5% in Quebec) on amounts up to $5,000
20% (10% in Quebec) on amounts over $5,000 up to including $15,000
30% (15% in Quebec) on amounts over $15,000
do not have significant residential ties in Canada and any of the following applies:
You live outside Canada throughout the tax year
You stay in Canada for less than 183 days in the tax year