A generic link to the FedNow website doesn't even begin to substantiate your claim. To start with, where is there any evidence that FedNow intends to share any information about individual payments with the Treasury department?
That is currently the legal responsibility of the financial institutions (for payments over a certain amount), not the ACH network. The ACH system doesn't have information like SSNs or EINs to associate with individual payments.
Does FedNow have a plan to start gathering and requiring that information from depository financial institutions just to do a simple bank transfer?
FedNow is for payments. That is a small subset of the information needed to determine someone's tax given the current landscape of credits and deductions.
