When a federal department wants to sole-source a contract, they can't just quietly award it anymore. The ACAN Challenge Period is that mandatory 15-calendar-day window where the department posts its intention publicly and gives other suppliers the chance to prove they can do the job too. If someone successfully challenges the sole source justification, the whole thing converts to a competitive procurement.
How It Works
Departments post the Advance Contract Award Notice on the Government Electronic Tendering Service (GETS) for at least 15 calendar days, as required by Supply Manual Section 3.15.5. During that period, any supplier who believes they can meet the requirements submits a statement of capabilities. Not a full proposal—just a demonstration that they meet the specific requirements outlined in the notice.
The department then evaluates these statements against the published criteria. If even one supplier proves they meet the requirements, the sole source approach dies right there. The department must pivot to a full competitive tendering process before awarding anything. But if no qualifying statements come in during those 15 days? The contract can go to the pre-identified supplier, and Treasury Board treats it as competitive for approval purposes—even though it never was truly competitive.
Timing matters enormously. Submissions must arrive within the 15-day posting period. Miss that window by a day, and your statement of capabilities won't be considered. The Treasury Board ACAN policy is explicit about this: statements received after the period closes don't trigger the competitive requirement.
Key Considerations
- The evaluation segregation rule: The officials who evaluate challenge statements cannot be the same people who decided to use an ACAN in the first place. Treasury Board built in this separation of duties to prevent departments from just rubber-stamping rejections to protect their preferred supplier.
- ACANs aren't a loophole: You can only use this process when the procurement genuinely meets an exception under the Government Contracts Regulations and applicable trade agreement limited tendering provisions. If there's no legitimate sole source justification, posting an ACAN doesn't create one.
- No fake consultation: Departments cannot post an ACAN when there's no real possibility they'd accept another supplier's capabilities. The requirement description and evaluation criteria must be clear enough that suppliers can actually assess whether they qualify—not so narrowly tailored that only the pre-identified supplier could possibly meet them.
- Calendar days, not business days: Those 15 days include weekends and holidays. If you're a supplier considering a challenge, don't assume you have three work weeks. You don't.
Related Terms
Sole Source Contract, Statement of Capabilities, Limited Tendering, Government Electronic Tendering Service (GETS)
Sources
- Supply Manual Section 3.15 – Advance Contract Award Notice (ACAN)
- Supply Manual Section 3.15.5 – Posting requirements for ACANs
- Treasury Board – Changes to the Advance Contract Award Notice (ACAN) Policy and Mandatory Procedures
If you're tracking sole source activity across departments, watch the ACAN challenge success rate. A department that never receives qualifying statements—or never accepts them—might be drafting requirements that effectively block competition while maintaining the appearance of openness.