to think 1 letter from tax credit is enough

[AuntiePickleBottom]

why do they always send out 2 letters, 1 adresssed to my DP and one for myself, saying the exact same thing

I agree if the address is the same (but then even so the partners may be estranged???)

But YANBU at all.

I asked them that once - they said it was part of the act of parliament? I thought there should be an optout clause!

it seems like such a waste of paper and postage cost to me

Its for fraud protection, if the claim is joint both parties get there own copy to ensure that each knows the figures supplied - then if the claim is wrong or fraudulent both parties can be chased for the debt.