Assigning a TAG to direct deposit account

There is one way to specify an additional "deposit account" with a tag, in the paycheck form ... but I will leave the discovery of its ramifications up to you.

Add an "Other After-Tax Deduction" to the paycheck. Make its category field the name of the additional deposit account in square brackets, followed immediately by a forward slash, followed by the tag name.

If that approach creates unwanted effects, the only other method I know is to make the change after the fact ... after the paycheck transaction has been entered. Use Find/Replace, or manually modify the individual transfer transaction(s) - suffix the forward slash followed by the tag name, to the "category" - in the additional deposit account.

Good idea on using another field. I had not thought of that. If I understood the second part, it won't let me modify the entry manually because it is a split transaction. I also thought of posting to a dummy account and then using a transfer to move it to the correct account with a tag.

You're right about the restriction on modifying transfers from split transactions ... I had forgotten that the transfer was coming from a split.

And posting to an intermediate account was going to be my next suggestion; I think that's probably the only other way, besides the other-after-tax deduction.