We have a very small S-Corp in Oregon. We are moving to TX. Getting set up to do business as a foreign entity is more expensive than incorporating in TX, so we will set up a new corporation there and then close the one in Oregon.
There will be some time overlap between getting the new corporation getting set up and the one in OR closing.

Is there anything special I need to know or do in regards to the IRS. Will the fed Tax ID stay the same and I just need to update the mailing address? Will the bookkeeping and income reporting all stay together under one business identity as far as the IRS is concerned. Or do we have to treat it as if it was a totally separate business starting in TX?

Do we have to get a separate bank account or just continue to use the same one. Our business is strictly over the internet and the money comes in from the merchant credit card processing center directly to the business bank acct.

Any advise is surely appreciated! Thank you.