Direct deposit is the fastest, safest way to receive your tax refund, and changes cannot be made after filing.
If you file a paper return, use Form 8888 to let the IRS know how much you want to go to each account. You can even split your refund between direct deposit and a paper check using Form 8888.
Direct deposit is also cheaper ... or if you are filing a paper return, you can use IRS Form 8888 to allocate your refund. Remember: you should only deposit your tax refund into a United States ...