If your organisation has DGR (Deductible Gift Recipient) status, you can use it with your  project and issue tax deductible receipt to your supporters. 

If supporters to your project chooses this, a $2+ tax deductible receipt reward will be automatically added on to your project.

It is your responsibility to make sure your organisation currently hold a valid DGR status before you choose this option for your campaign.

You can read up on DGR status here.