Refund. Even if you do not have to file a tax return, you should file to get a refund if box 2 shows federal income tax withheld or if you can take the earned income credit.
Earned income credit (EIC). You may be able to take the EIC for 2012 if (a) you do not have a qualifying child and you earned less than $13,980 ($19,190 if married filing jointly), (b) you have one qualifying child and you earned less than $36,920 ($42,130 if married filing jointly), (c) you have two qualifying children and you earned less than $41,952 ($47,162 if married filing jointly), or (d) you have three or more qualifying children and you earned less than $45,060 ($50,270 if married filing jointly). You and any qualifying children must have valid social security numbers (SSNs). You cannot take the EIC if your investment income is more than $3,200. Any EIC that is more than your tax liability is refunded to you, but only if you file a tax return.
Clergy and religious workers. If you are not subject to social security and Medicare taxes, see Pub. 517, Social Security and Other Information for Members of the Clergy and Religious Workers.
Corrections. If your name, SSN, or address is incorrect, correct Copies B, C, and 2 and ask your employer to correct your employment record. Be sure to ask the employer to file Form W-2c, Corrected Wage and Tax Statement, with the Social Security Administration (SSA) to correct any name, SSN, or money amount error reported to the SSA on Form W-2. If your name and SSN are correct but are not the same as shown on your social security card, you should ask for a new card that displays your correct name at any SSA office or by calling 1-800-772-1213. You also may visit the SSA at www.socialsecurity.gov.
Cost of employer-sponsored health coverage (if such cost is provided by the employer). The reporting in Box 12, using Code DD, of the cost of employer-sponsored health coverage is for your information only. The amount reported with Code DD is not taxable.
Credit for excess taxes. If you had more than one employer in 2012 and more than $4,4624.20 in social security and/or Tier I railroad retirement (RRTA) taxes were withheld, you may be able to claim a credit for the excess against your federal income tax. If you had more than one railroad employer and more than $3,192.90 in Tier II RRTA tax was withheld, you also may be able to claim a credit. See your Form 1040 or Form 1040A instructions and Pub. 505, Tax Withholding and Estimated Tax.