Once your new SoFi checking account is successfully opened you can expect to receive your Mastercard debit card in about 7-10 business days (holidays may affect time frames).
If you haven't received your card by the 10th business day, please follow the steps on the It's been over 10 business days and I haven't received my debit card page to order a replacement.
Pro tip! You can also add your new SoFi debit card to your digital wallet so you can start using it immediately while you wait for your physical card to be delivered. You can find the instructions here: Virtual Debit Card / Digital Wallet Setup