Where’s My Refund? – Up-to-date information on the status of a tax refund
Where’s My Amended Return? – Provides the status of Form 1040X Amended Tax Return for the current year and up to three prior years.
IRS Email Subscriptions – Get IRS news and tips directly in your inbox.  IRS Newswire is a must have for  tax professionals
Basic Tools for Tax Professionals  – Provides many tools to assist the tax professional
IRS Tax Map – Powerful search tool of IRS information by topic
Internal Revenue Manual – Details the policies, procedures, instructions, authorities, and guidelines  for IRS operations
Where to File a Paper Tax Return? –  Filing addresses for various types of returns
Draft Tax Forms –  Useful to see upcoming tax form changes
Yearly Average Currency Exchange Rates  –  Useful for finding  exchange rates for certain situations
Correcting Employment Taxes– Instructions and forms to amend employment tax returns
IRS Hotlines Quick Reference Chart  –  Handy list of IRS hotline telephone numbers from the AICPA
IRS Tax Due Dates –  IRS Tax Calendar for Businesses and Self-Employed

IRS Covid-19 Mission Critical Functions

IRS Coronavirus Tax Relief and Economic Impact Payments 

IRS Newsroom – Latest IRS News

Other Government Resources

Treasury Reporting Rates of Exchange – Current and historical exchange rates from the Department of  the Treasury
FAFSA –   Free Application for Federal Student Aid Website
GSA Per-Diem Travel Rates –  Maximum government per-diem travel rates from the GSA.