To qualify as a 2010 deduction, contributions to your personal or spousal RRSP must be made on or before March 1, 2011.
Determine your RRSP contribution limit for 2010 by referring to your previous year’s Notice of Assessment from the Canada Revenue Agency (CRA), or visit the CRA website at (link).
Determine how much, if any, you have already contributed to your RRSP for 2010.
You can take advantage of any unused 2010 RRSP room up to your contribution limit. You will receive a 2010 tax deduction for this amount as long as the contribution is made by the March 1, 2011 deadline.