In order to use your existing card first be sure your Turbo Visa Debit card is still active. You may find the routing and account information by logging into your account, or by calling Turbo Card Customer Care.
When you are completing your tax return, TurboTax will ask you How would you like to receive your federal refund? - Select "direct deposit" and enter the bank account and routing numbers, then select 'checking' for the account type.