What is a Tier 3 security clearance?
Matthew Barrera
Updated on April 28, 2026
T3 is the investigation required for positions designated as non-critical sensitive and/or requiring eligibility for "L" access or access to Confidential or Secret information. T3R is the reinvestigation product required for the same positions. The Standard Form (SF) 86 is used to conduct these investigations.
What are the 3 types of security clearance?
There are three levels of security clearance: confidential, secret, and top secret.What are the 5 levels of security clearance?
Contents
- 3.2.1 Controlled Unclassified.
- 3.2.2 Public Trust Position.
- 3.2.3 Confidential.
- 3.2.4 Secret.
- 3.2.5 Top Secret.
- 3.2.6 Compartmented.
How far back does a Tier 3 investigation go?
The T3 InvestigationThe New T3 is now all the same for military, civilian and contractor positions. The new scope is the last 5 years.