A person who is a dependent may still have to file a return. It depends on his or her earned income, unearned income, and gross income. but in your case the child income is below 2,055. here is a table that make help. http://www.irs.gov/publications/p501/ar02.html#en_US_2014_publink1000220702
If your parent (or someone else) can claim you as a dependent, use this table to see if you must file a return.
In this table, unearned income includes taxable interest, ordinary dividends, and capital gain distributions. It also includes unemployment compensation, taxable social security benefits, pensions, annuities, and distributions of unearned income from a trust. Earned income includes salaries, wages, tips, professional fees, and taxable scholarship and fellowship grants. Gross income is the total of your unearned and earned income.
If your gross income was $3,950 or more, you usually cannot be claimed as a dependent unless you are a qualifying child. For details, see Exemptions for Dependents.
Single dependents—Were you either age 65 or older or blind?
?No. You must file a return if any of the following apply.
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Your unearned income was more than $1,000.
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Your earned income was more than $6,200.
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Your gross income was more than the larger of—
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$1,000, or
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Your earned income (up to $5,850) plus $350.
