Same as today YN...with tax.
So if a person making $26,400 can buy all his necessities for $26,400 (ti), why does the government send him an additional $6,072? So he can buy $4,675
more than his necessities?
No. The answer is, the $26,400 worth of necessities
does not include taxes. The idea of the "prebate" is that by
spending it, that person can purchase all their necessities (although there is an error in the way the FCA is calculated that doesn't allow this person to do that).