No. As you apparently know, turning 24 before the end of 2018 is the key factor.
There are two types of dependents,
"Qualifying Children"(QC) and standard ("Qualifying
Relative" in IRS parlance even though they don't have to actually be
related). There is no income limit for a QC but there is an age limit, student test, a
relationship test and residence test. Only a QC qualifies a taxpayer for the
Earned Income Credit. They are interrelated but the
rules are different for each.
You are too old to be a QC. So, there is now an income limit, for you to be their dependent. If you made more than $4150 in 2018, you cannot be a Qualifying Relative dependent either.
