I wasn’t aware of the married joint. Now that I see it on the checklist on the USCIS website, I’m wondering if it’s too late to submit a W4 stating joint.
Your tax status doesn't have to be joint for immigration purposes. You could file as married filing separately. So, no, changing to joint won't prevent your I-751 from being approved.
The decision to file jointly as married or separately as married is up to you and your spouse (and perhaps a tax preparer), and is not a decisive factor in the I751. However, if filing as head of household, single, or married but filing separately, the way in which taxes are filed can be an indicator to try to understand the basics of the marriage and whether the marriage remains in tact. You may want to consider seeking the help of an immigration attorney to determine how to file the I751, what documents to gather and how to prepare for the I751 interview.
The information provided is not to be considered to create an attorney-client relationship. The information provided is general in nature, and does not represent a thorough review of a situation or case, nor does it constitute legal advice on any subject matter. Seek a private consultation with an immigration attorney of your choice to obtain legal advice.
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