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7. Nonprofit Research Databases
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IRS Statistics of Income Files (SOI)
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SOI File Documentation and User Notes
Inconsistencies in SOI Coding (Technical Note)
SOI Data Dictionaries 1992-2005: Forms 990/990EZ and 990PF marked with SOI field names
SOI Data Dictionaries 1999: Forms 990, 990 Schedule A, 990EZ, 990PF marked with SOI field names
SOI Data Dictionaries 2005: Forms 990, 990 Schedule A, 990EZ, 990PF marked with SOI field names
IRS SOI Sampling - Background and Changes in Strata (Technical Note)
IRS Statistics of Income Division (SOI) Exempt Organization Files (Technical Note)
NTEE Classification in the SOI (Technical Note)