Are you talking about the married persons tax allowance? Because you can only benefit from that now if one of you earns less than the personal allowance (less than £12,500 a year) - so not, as you state, "no matter how much you earn".
Not only does one of you have to earn less than £12500 a year (which I do) but the other must earn under £50000 (which DH doesn’t so we don’t get the marriage allowance OR child benefit).
@ajandjjmum these figures are incorrect. You will not pay that much tax on £80k salary. It’s just not true.
Actually...if you include NI then that really IS true!
According to the predictive calculators, although I still won’t pay any tax under a Labour government I WILL pay more in NI contributions... I don’t mind but they did say that the low paid would be better off... surely someone who doesn’t earn enough to pay tax counts as low paid....