--- title: Why am I being asked for my SIN? description: The CRA requires addy to ask for every members SIN. We do so on an annual basis to ensure compliance with the requirement. --- [Skip to content](https://learning.addyinvest.com/why-am-i-being-asked-for-my-sin#main-content) English Show submenu for translations ![addy logo.png\]](https://learning.addyinvest.com/hs-fs/hubfs/logos%20-%20addy/addy%20logo.png?height=40&name=addy%20logo.png) Open main navigation Close main navigation - English Show submenu for translations - [Go to addyinvest.ca](https://addyinvest.ca/) [Go to addyinvest.ca](https://addyinvest.ca/?hsLang=en) Hello 👋 How can we help you? - There are no suggestions because the search field is empty. 1. [addy Help Centre](https://learning.addyinvest.com/?hsLang=en) 2. [Information for Members](https://learning.addyinvest.com/information-for-members?hsLang=en) 3. [Taxes](https://learning.addyinvest.com/information-for-members?hsLang=en#taxes) # Why am I being asked for my SIN? ## The CRA requires addy to ask for every members SIN. We do so on an annual basis to ensure compliance with the requirement. ### **Overview** We request your **Social Insurance Number (SIN)** annually if you have not previously provided it. This is a requirement under **Canada Revenue Agency (CRA) regulations** to ensure accurate tax reporting. If you earn investment income, your SIN must be included on the tax slips we issue (T5 or T5013) for proper filing with the CRA. ### **Why Is a SIN Required?** The CRA requires us to collect and report SINs for individuals receiving certain types of income to ensure tax compliance. Specifically: - **T5 Slips:** Issued for investment income (e.g., interest, dividends) – SINs are required for individuals. - **T5013 Slips:** Issued for partnership income – SINs are required for individual partners. Without your SIN, the CRA may be unable to match the income reported on your tax return, potentially causing issues with your tax filing. ### **What Happens If You Do Not Provide Your SIN?** If you do not provide your SIN, the CRA requires us to demonstrate that we have made a reasonable effort to obtain it. This includes sending annual requests before filing tax slips. 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