Tax on child benefit

Hi all,
Due to my income I have to declare through self assessment the payment my ex has for child benefit each month. At the time of introducing the new tax ruling on this, we made a decision to carry on with the payment.

For tax year 13/14, I will have a tax liability of £1,324 to pay!

Seems so unfair that my ex was such a low earner yet I guess there are other couples who claim and are both high earners.

As the payment is in respect of the amount my ex has had paid to her, am I able to ask her to either pay the amount in full or at least make a large contribution to it? HMRC have also told me that as she did not physically leave the property until June 2014 the period from end of January 2014 to then we are still classed as married and living together and so the tax liability still stands.

Cannot believe that with all of the other debt she has walked away from and left me in, I am now landed with a further debt plus another 3 months of tax charge in 14/15.

Help!!

I''m a little confused by your post

Do you mean child maintenance rather than child benefit? As far as I know, CB is not a taxable income.