Claiming for kids full-time - Duty to report?

Both parents work full time and she has told benefits people that she has the kids full time so is claiming 100% of CTC, WTC etc even though they are only with her 50% of the time.

There is no provision for anything else.

HMRC will not divide tax credits between parents. 100% of the entitlement goes to the parent in receipt of child benefit.

That is the only way to deal with it and if it appears to you to be strange and unreasonable, that''s probably because it is.

You will find dozens of resident parents on here whose ex partners have the children overnight a proportion of each week. HMRC don''t ask for that information when you make a claim.

The problem for the dad in this arrangement is that I suspect that mum is not prepared for him to claim that one of the children lives with him.She wants to be in full receipt of both lots of income in the way of benefits for the kids.If he tries to half her benefits for the kids is she threatening to stop the 50/50 access with the kids?
Money vs access argument.
Is he still getting fleeced for child maintenance as well?
But no if it''s a personal arrangement on access she''s not doing anything wrong to claim all the benefits for the kids.
All the best
HRH xx