What is a tax export code? Do you mean your bank routing number and account number?
Banks have a special routing number for ach, etc. You might have to call your bank and ask them for it. Here is how to find the routing number on your checks
https://ttlc.intuit.com/community/refunds/help/which-number-on-my-check-is-the-routing-number/00/261...
Do you have Bank of America?
