Do not guess about the deadline. Check the assessment portal and recruiting communication, and ask Bain recruiting if the completion window is still unclear.

Assessment links can have office-specific or role-specific timing, and the absence of an obvious deadline in one email does not mean the link is open indefinitely. Waiting based on an assumption creates unnecessary risk.

The invitation may contain the deadline inside the TestGorilla portal, in a separate recruiter email, or in the original application instructions rather than in the main invitation text.

Review every part of the invitation and portal first. If you still cannot identify the deadline, contact recruiting promptly. Once you know the window, choose a test date that gives you enough preparation without pushing unnecessarily close to the cutoff. If useful, this guide on Bain TestGorilla guide gives more detail.

I would ask recruiting rather than gamble with the deadline.

Check inside TestGorilla too. Sometimes the deadline is in the portal, not the email.