maybe I'm just too cynical, but I have a hard time believing it would work out that way. the difference between the cheapest and most expensive brand of pasta is at least 4x. why wouldn't you buy the nicest brand every time? if the tax bracket adjustments had any bite, you would end up with poor families owing more tax than they earned income. this ends up basically equivalent to means testing anyway.

> if the tax bracket adjustments had any bite, you would end up with poor families owing more tax than they earned income.

I mean... they'd be told that that would happen in advance. Wouldn't that then serve as an incentive to avoid making a pattern of taking home the more-expensive food? (They could still do it rarely, though. A one-time $50 bump in spending isn't going to affect your taxes.)

if you're really willing to allow that outcome, then your proposal is just an implicit benefit limit that's a bit harder to calculate. how is that different from / better than saying "here's $xxx to feed your family this month; budget appropriately"?

Again, because if you give someone $xxx, they feel compelled to use it, and therefore to put $xxx less of their own money into the economy.

Here, people don't have any money or food stamps "burning a hole in their pocket." They just have their own money, and an unlimited line of credit for grocery stores that would "come due" in the form of taxes at the end of the year (but which would only end up costing them anything-at-all if they tried to live beyond their means.)

The only real presumption I'm making here, IMHO, is that people would be too ashamed to buy the "below your means" items (e.g. rice and beans) on this credit, if they didn't have to. Just like people are usually too ashamed to go to food banks if they don't have to.

okay, I think I see your point now. it's less of a no-limit credit card paid by uncle sam and more of a contribution matching / loan combo. I do think the tax interaction is overly convoluted, but I see the core of something viable here. people can get extra purchasing power when they need it, but they still have at least a little skin in the game to discourage abuse.

I will say I'm not a big fan of using shame to gate off this benefit. my intuition is that shame alone is not enough to stop most people from seeing a way to stretch their grocery budget, if they can use it to buy anything they want. if it is effective, then that's only in proportion to how dehumanizing the experience of using it is, which is also kind of shitty.