I claimed the American opportunity credit for 3 years, but it said we already claimed 4 years of credits. Is there any options I can check it ?
Look at your return from a prior year. Find form 8863. Is it there? If yes, lines 8 and/or 19 will tell you how much (if any) credit was claimed.
If you don't see Form 8863, there was no way to claim any refundable or nonrefundable credits that year.
The IRS is only ever concerned with knowing if you've claimed this credit for 4 total years - eligible years do not have to be consecutive. (Form 8863, line 23)
Edit/Add/Start for Expenses and Scholarships (Form 1098-T)
On Your Education Expenses Summary,Edit or Add Another Student
(enter tuition/scholarship/other information) Edit Education Information
TurboTax will ask: 'Did You Ever Receive the American Opportunity or Hope Credit?' Answer Yes, enter # of years. TurboTax will choose the deduction or credit that saves you the most in tax payments.