When you're filing your taxes, you'll choose to send your tax refund to your Current account through direct deposit. If you need your account and routing numbers, they can be found within your app by tapping your checking account and then tapping into Routing & Account Numbers.
Please note: The name on your deposit must match the name on your Current account. A deposit from the IRS that has a name that does not match the account information on file may be rejected and sent back to the IRS.