⏳ CoS Expiry Dates Explained
Both Defined and Undefined Certificates of Sponsorship have expiry dates. If a CoS is not assigned before its expiry date, it cannot be used.
🔹 Defined CoS Expiry
Defined CoS expire 3 months after they are granted by the Home Office.
This means you have a 3-month window from the approval date to assign the CoS to a candidate.
🔴 Undefined CoS Expiry
Undefined CoS expire on the same date each year — your CoS expiry date.
For example, if your expiry date is 15th February every year, any unassigned CoS will expire after this date, even if approved the day before (e.g., 14th February).
🔍 How to Check Your CoS Expiry Dates
You can view your CoS expiry dates easily in Borderless:
Go to the Certificates of Sponsorship page
Click View Defined or View Undefined
This will show you the expiry dates relevant to your allocations.
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