@anschlager as a follow up to @Opus 17 response where it was stated 'so that both can work', there is an exception if one spouse is a full time student, which is defined as:
Full-time student. You are a full-time student if you are enrolled at a school for the number of hours or classes
that the school considers full-time. You must have been a full-time student for some part of each of 5 calendar
months during the year. (The months need not be consecutive
otherwise, to be eligible for the credit, both must work
suggest watching the questions closely in Turbo Tax when you complete the interview section to watch for the question about a parent being a full time student,
are you asking about 2021 or 2022 tax year?
the 2022 limits revert back to the pre-2021 limits, including the credit is again non-refundable, which means it can not reduce Line 22 below zero on Form 1040.
In 2021, it was refundable, so it is not impacted by you tax liaiblity on Line 22; it will reduce what you owe or increase your refund
