You can only make a claim for Child Tax Credit if you already get Working Tax Credit.
If you cannot apply for Child Tax Credit, you can apply for Universal Credit instead.
You might be able to apply for Pension Credit if you and your partner are State Pension age or over.
What you’ll get
The amount you can get depends on how many children you’ve got and whether you’re:
Child Tax Credit will not affect your Child Benefit.
You can only claim Child Tax Credit for children you’re responsible for.