Rogue archivist Carl Malamud sez,
If you want access to all the tax filings of US nonprofit corporations, the IRS will sell you sets of DVDs for $2580 per year of data. We acquired all of these filings from 2002 to the present, a set of DVDs weighing 98.7 pounds. I'm pleased to report that all 6,461,326 of those returns are now successfully extracted and available on our new bulk data feed.
This data really should be available directly from the IRS at no charge. Accordingly, we've drafted a deed of gift offering the system back to the government.
Until the .gov people do take it over, we're offering access to all 5 TBytes of data using the http, ftp, and rsync protocols. Our hope is that developers will come up with lots of new uses for this information. In order to make the database even more useful, we've started working with Captricity to extract data from the forms and make it available as computable data (e.g., CVS files instead of TIFF images!).
Once search engines such as Google finish indexing the data, the tax filings of nonprofits will show up in the search results. When you search for a nonprofit, the first thing you see ought to be their home page. But, the next thing you ought to see are things like how much they pay their CEO, how much revenue goes for fundraising, and if they spend money to lobby public officials.
Nonprofits in the US had $1.87 trillion in 2009 revenues and it is these periodic filings that make the nonprofit marketplace work properly, just like SEC EDGAR filings help make the corporate markets work properly.