IRS On-Line EIN Service Planned Outage Post author:Frank Carnahan Post published:December 22, 2020 Post category:News 2020-12-22 The IRS on-line EIN service will be unavailable from approximately 5 p.m. Eastern time on Wednesday, Dec 23, 2020, until approximately 7 a.m. Eastern time on Monday, January 4, 2021, due to planned maintenance. You Might Also Like The IRS has a flowchart for partnership audits August 27, 2020 Payroll Tax Deferral Order, August 8 September 2, 2020 Tax Withholding Estimator May 28, 2021