akaplan_98
Returning Member

Get your taxes done using TurboTax

The most common reason is that you earned more money, which past a threshold starts to lower the credit.  Or you may have earned less money; e.g. if you earned 0, no credit.  After 0, amount of credit increases until threshold, then starts to decrease.   If your family situation changed, or a child got too old, this also impacts credit amount.