In my time as a Contracting Officer, I’ve seen more funding modifications rejected by legal for one specific reason than any other: misidentifying a service as severable or non-severable. It sounds like a semantic debate, but in the world of appropriations law, it is the difference between a valid contract and an Anti-Deficiency Act violation.
To fund a service contract correctly, you have to determine how the government receives value from the work. Here is the definitive breakdown of Severable vs. Non-Severable Services.
The “Litmus Test”: When Do We Get Value?
The Government Accountability Office (GAO) distinguishes these services based on the delivery of value.
1. Severable Services
Definition: A service is severable if it is recurring in nature and the government receives the full value of the service as it is performed. The service can be stopped at any time, and the government has still received a benefit for the work already done.
Examples:
- Custodial/Janitorial services
- Grounds maintenance
- Security guard services
- IT Help Desk support
Think of it this way: If you fire the janitor in June, the windows cleaned in January are still clean. You received that value.
2. Non-Severable Services
Definition: A service is non-severable if it represents a single undertaking that produces a specific end result, product, or report. The government receives no genuine value until the entire project is finished.
Examples:
- A scientific study leading to a final report
- Developing a specialized training curriculum
- Overhauling an aircraft engine
Think of it this way: If you hire a firm to write a comprehensive study and fire them when they are 80% done, you don’t have 80% of a study; you have zero value because the final deliverable doesn’t exist.
The Funding Rules
Once you classify the service, the funding rule follows automatically. This is derived from the Bona Fide Need Rule.
Funding Severable Services
General Rule: You fund severable services with the fiscal year appropriation current at the time the services are performed.
The DoD Exception (10 U.S.C. § 2410a): This is the most important statute for an Air Force Contracting Officer. It allows the Department of Defense to obligate funds current at the time of contract award to finance a severable service contract with a period of performance that crosses fiscal years, provided the total period does not exceed 12 months.
Example: You can award a 12-month custodial contract on September 15, 2023 (FY23), using FY23 O&M funds. Even though 11.5 months of the work happens in FY24, it is a valid obligation of FY23 funds under 10 U.S.C. § 2410a.
Funding Non-Severable Services
The Rule: Non-severable services must be fully funded at the time the contract is awarded. You must obligate the entire cost of the undertaking against the appropriation current at the time of award, even if the work takes several years to complete.
You cannot “incrementally fund” a non-severable service contract (unless a specific exception like R&D applies) because the “need” is for the entire finished product, not month-to-month effort.
Why Getting This Wrong is Dangerous
If you treat a non-severable service (like a study) as severable and try to fund it one fiscal year at a time, you have violated the Bona Fide Need Rule by under-obligating the first year.
Conversely, if you treat a severable service as non-severable and try to fund 3 years of performance upfront with 1-year money, you are parking funds for future needs, which is equally illegal.
Bottom Line: Determine the nature of the work first. The funding strategy—and the legality of your contract—depends on it.