You can file tax returns for yourself and your spouse separately, but you need to indicate your marital status as common-law on each of your returns. If you did so, you do not need to wait and refile; you can file your spouse's tax return now.
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Thanks, but perhaps I wasn't clear enough. I am married, I filed separate return for myself and chose the "file a return for myself option". I now need to file one for my spouse. I think I just need to go back into my account and create a return based on their information under their name and CRA number, etc. There shouldn't be a need to Refile, as I've indicated married on my return and will do so on theirs. I was concerned that I didn't select "do a return for both of us" at the start.