999 = N.I.U. (Not in Universe).
See User Note for an explanation of these codes.
MWPVAL indicates the dollar amount of credit received from the Making Work Pay tax credit. The Making Work Pay provision of the American Recovery and Reinvestment Act of 2009 provided a refundable tax credit of up to $400 for working individuals and up to $800 for married taxpayers filing joint returns.
Amounts for MWPVAL are expressed in dollars of the given year, rather than in constant dollars adjusted for inflation. Users can adjust for inflation using Consumer Price Index adjustment factors.
- Persons age 15+.
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