The meaning of the Acronym IRS is...

IRS is

• Interface Requirements Specification
• Internal Revenue Service
• Information Reporting System
• In Range Shooting
• Information and Reconnaissance Ship

More Meanings For IRS:

• International Reference Star
• Infrared Spectroscopy
• Indian Remote Sensing
• Inverse Repeated Sequence
• Instructor Rating System
• Intelligent Responsible Students
• Internal Revenue Service
• Increasing Returns To Scale
• Information And Referral Services
• Internal Regulating Services
• Inventory and Resource System
• Image Results And Security
• Identify, Reduce, and Schedule
• Internal Revenue Service
• Irsa Inversiones y Represent

IRS is also in:

• Accounting
• Astronomy
• Electronics
• Firms
• General
• Geology
• International Business
• Mathematics
• NYSE Symbols
• Universities