Comment by alias_neo

> There is no income stage where earning more money has you taking home less

If you go from £99,999 to £100,000 and have pre-school aged children, you lose £2000 in tax-free childcare per child. If you have 2 children, that extra penny cost you £4000, 3 children, £6000, you take home less, fact.

Combined with the 60% marginal rate, you now have to get to £110,000 just earn the same you did at £99,999 and then there's the side point that a couple can earn £99,999 each, or £198,999.98 and still benefit from it while any single parent who hits £100,000 loses it completely, so a single parent high earner loses out vs a couple. I'm not a single parent but that doesn't seem reasonable to me.

EDIT: and that person who hit £100,000 has the extra burden of having to file a tax return from now on simply because they hit an arbitrary number, and despite being on PAYE, though perhaps some people love doing tax returns, so not necessarily a negative point.

https://www.gov.uk/tax-free-childcare