Only one person can claim Child Benefit for each child, so a couple should decide which partner will make the claim. The claimant receives the payment and may get National Insurance credits towards their State Pension, while the other partner can usually request the credits if appropriate. Child Benefit may be affected by the High Income Child Benefit Charge where one partner has income above the relevant threshold, even if the household makes the claim. Apply through the official GOV.UK Child Benefit service and check the latest rules for your circumstances.