Pension Data

http://slge.org/research/public-plans-database

Fiscal 50 State trends visualization

http://www.pewtrusts.org/en/multimedia/data-visualizations/2014/fiscal-50#ind0

A data resource

http://www.statedatalab.org/

Data visualization and graphics

in government.  The idea is to improve transparency:  "By providing our data in a more engaging way, we can get people more interested," said Kei. "They can see the value of our statistics and become more educated on what we do at the IRS." 

See the presentations that were associated with this webinar and powerpoints   http://www.howto.gov/training/classes/data-visualization-and-infographics

Treasury department's inspector general finds

Governments submit inaccurate tax form data, well, less than 1%, but what about the example being set  http://thehill.com/blogs/on-the-money/domestic-taxes/157205-audit-governments-could-reduce-number-of-incorrect-tax-submissions.  

New data sets available

for the public are now open, aiding increased transparency http://www.data.gov/

The State of the States

The Nelson A. Rockefeller Institute of Government has a website chock full of data related to the nation's states. This organization's mission focuses and trackes state fiscal conditions, tax policies, fiscal capabilities, and spending trends. One scary report from July 2009 shows
"State Tax Decline in Early 2009 Was the Sharpest on Record" A wealth of data here
http://www.rockinst.org/government_finance/