Signing Requirements – The taxpayer and their representative are required to sign under penalty of perjury.[1]
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Mississippi Tax Power of Attorney (Form 21-002)
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Updated October 16, 2025
A Mississippi tax power of attorney (Form 21-002) is a document used to designate a tax professional to act on someone's behalf in interactions with the Department of Revenue in Mississippi. Mississippi will not allow a person other than the tax filer to obtain information or transact any other business on their behalf without this form.[1]