changing how you qualify for them,, uping the hours you have to work to get them, thus reducing the money you get, if when you do more hours you get more pay, which means any housing benefit or that, that people get are reduced, meaning they have to contribute more, less spare cash to spend, they are also reducing the limit to which people stop getting tax credits to 40 k a year, (total income)
it will affect a lot, but a lot wont notice till summer next year