How do I add a SIN, it will not allow me to edit that box.
When on your return, click on "Profile" and continue until you can see the page where you entered your SIN and delete the SIN Number, then enter the proper SIN number.
If you are not able to edit your Social Insurance Number you will need to start your return from scratch.
You have clicked a link to a site outside of the TurboTax Community. By clicking "Continue", you will leave the Community and be taken to that site instead.
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