Income limits and benefit amounts depend on the number of qualifying children (0, 1, 2, or 3+). A qualifying child for the EIC must be under 19 years old, or under 24 if a full-time student, or any age if disabled.he income limit depends on the number of âqualifying childrenâ and on whether the tax filer is married or unmarried. 1  The limit for families with no children is $14,590 ($20,020 if married);
Until the age around 25 your brain is not fully developed. The exact age varies person to person, but it's around 25
The brain is fully developed around the age of 20-25 like the above say. But making rational decisions has nothing to do with that, you can make those at any age. At about age 23 the final stages of brain development occur. The last part of development to occur is the part of the brain that is involved in rational decision making.