You will open your return and go to the left side and click on RRSPs- Get Started.

You will then come to the page- Your RRSP Profile for 2021 and you will check off the ones needed. Continue to the next page where it will ask how much is your deduction limit- enter the amount and continue. 

The next page you will see Your RRSP Contribution- You will enter the amounts where needed and the last one says "Contribution amount to your spouse's RRSPs" there you will enter the amount you contributed to your wife's RRSPs.

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