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What is a UIR number?
Hint: It's the magic number HMRC sends you for your SEIS/EIS Compliance
UIR stands for Unique Investment Reference and is an 8 digit number you receive from HMRC after you send them your SEIS or EIS1 Form, Cover Letter & Supporting Documents. It can also be referred to as a SEIS2/EIS2 number.
Below is an example of the email HMRC send back with the UIR/SEIS2 number:
![](https://help.seedlegals.com/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio26275065060915e60413f1f8b7d16276dimage-1.png)
You can then enter this number onto the platform to generate all your investors' certificates in seconds!
![](https://help.seedlegals.com/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio3490876723865bafaef1e21d8f8807385image-1.png)
Here are some guides you may find useful if you're doing your SEIS or EIS Compliance: