If IRS denied or reduced your EITC for any year after 1996 for any reason other than a math or clerical error, you will need to do the following in order to claim the EITC this year:
1. Qualify to claim EITC by meeting all the Rules
for Claiming the EITC
2. Attach a completed Form 8862, Information to Claim Refundable Credits After Disallowance, to your next tax return to claim EITC.
The following FAQ will guide you through the process. https://ttlc.intuit.com/replies/3300678