... 01/12 What to do if you think your Child TaxCredit/WorkingTax Credit is wrongThis factsheet tells you how you canappeal against a Child Tax Credit orWorking Tax Credit decision or penalty. If ... formal appeal. This way, if we agreeour decision is wrong, we can make sureit's changed for you. If you still don’tagree with our decision, you may beable to appeal, but your appeal normallystill ... canappeal when: • you think a decision is wrong • your award doesn't take into account a change of circumstances • your award is reduced or has stopped • you don't agree with a penalty...