Like many government services, the Internal Revenue Service is only available Monday through Friday from 7am to 7pm.  There are exceptions.  Many regional IRS offices are available on Saturdays. 

Depending on your state, you may have at least one field office open during the weekend. Please be aware the IRS is making most of the services found at field offices available at the IRS website. Some of these online services include:

  • Refund Status
  • Form Publications 
  • Account Information 
  • Tax ID Services
  • And More

The best advice at this point is to prepare for the weekday. Don't think about calling Monday. Mondays are extensively congested with callers and waiting time will linger for more than one hour. This is specially critical during tax season.

During tax season it's possible the IRS may have agents available during the weekend to support the high volume of tax refund submissions. 

During off season the best days to call are Wednesday and Thursday.