# Updating of Employer Identification Numbers
> **IRS** · Final regulations. · Published 2013-05-06 · Effective 2013-05-06 · 78 FR 26244
## Document
- **Document number:** 2013-10515
- **Category:** tax-irs
- **Sub-agency:** IRS
- **Federal Register citation:** 78 FR 26244
- **CFR reference:** 26 CFR 301
- **Publication date:** 2013-05-06
- **Effective date:** 2013-05-06
- **Treasury docket:** TD 9617
## Abstract

This document contains final regulations that require any person assigned an employer identification number (EIN) to provide updated information to the IRS in the manner and frequency prescribed by forms, instructions, or other appropriate guidance. These regulations affect persons with EINs and will enhance the IRS's ability to maintain accurate information as to persons assigned EINs.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/05/06/2013-10515/updating-of-employer-identification-numbers)
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