I made a mistake in my 2021 and 2022 tax returns. I now owe money for 2022. Can I make an adjustment/re-file? Maybe adding my RRSP contribution in Jan 2021 to my 2022?

Can you please clarify if you are asking if you can take the RRSP contribution made in January of 2021 and put it in your RRS of 2022?

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Yes! So that my income for 2022 would be less than it is, and avoid paying a large owing balance. 

As per the CRA- If you have mistakenly over-contributed to your RRSP, fill out a T3012A form and submit it to the CRA. It explains your over contribution and makes a request to withdraw the excess amount. 

What Are RRSP Over-Contributions and How to Resolve Them?

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