Tax credits: How much is Child Tax Credit per week – How to apply | Personal Finance | Finance
If your claim started on or after April 6, 2017, the benefit is slightly different.
If your claim was made after this date, you only get the child element for up to two children.
The family element only applies if at least one of your children was born before April 6, 2017.
You can use a tax credit calculator on the Government website HERE, to find out how much you could be eligible for.