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5558 Form (Rev. June 2011) Department of the Treasury Internal Revenue Service Part I Am Application for Extension of Time To File Certain Employee Plan Returns OMB No. 15450212 File With IRS Only
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The filer's identifying number is a unique number assigned to an individual or entity for tax reporting purposes.
Anyone who is required to report income or financial transactions to tax authorities must file a filer's identifying number.
The filer's identifying number can be filled out on tax forms provided by the relevant tax authority or online through their website.
The purpose of the filer's identifying number is to track income and financial transactions for tax reporting and compliance.
The filer's identifying number typically includes personal or entity information such as name, address, and tax identification number.
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