If you have applied for and received the TurboTax PrePaid Visa issued by Green Dot, there is not a limit on your deposit amount.
However, if you are using a different card that has a deposit limit, you may want to contact their customer service department to inquire of any exceptions to this rule in regards to your IRS refund. Some cards make provisions for a tax refund amounts.
To address your final concern about a check being mailed, YES, generally, if the financial institution recovers the funds and returns them to the IRS, the IRS will send a paper refund check to your last known address on file with the IRS.
*Please Note: TurboTax cannot assist with prepaid card issues
