Hello JA Customer,
The number that you used on a bank account really has nothing to do with your taxes at all or the number you would use when filing your taxes.
If you are now operating as a sole proprietor, you can simply report your income and expenses under your own SS number. You may also apply for a new EIN for your current business and use that number.
As long as you did not actually make any tax payments under that old EIN, then you have no issues just by using it for your bank account information, as that is not tied directly to your tax returns.
If this was helpful please press the Accept button. Positive feedback is also appreciated.
Thank you JA Customer