Heritage Foundation: Budget
- Articles, studies, and other conservative analysis of U.S. federal budget and tax policy.
- http://www.heritage.org/research/budget/index.cfm

Almanac of Policy Issues: Budgets and Taxes
- Latest news, background information, and links on U.S. budgetary and appropriations issues.
- http://www.policyalmanac.org/economic/budget.shtml

Invest in America Campaign
- Coalition of pro-spending advocacy organizations and unions working for increased federal investment in education, the environment, and low-income programs.
- http://www.investinamerica.org/

Budget Explorer
- Explore the entire U.S. Federal Budget quickly and easily. Balance the budget to reduce the National Debt. Learn how your Federal taxes are spent.
- http://www.kowaldesign.com/budget/

Office of Management and Budget
- White House office responsible for devising and submitting the president's annual budget proposal to Congress.
- http://www.whitehouse.gov/omb/

About.com: Federal Budget
- Compilation of links related to the federal budget from About.com.
- http://usgovinfo.about.com/newsissues/usgovinfo/msubbudget.htm

Taxpayers Against Fraud
- Nonprofit public interest organization dedicated to combating fraud against the federal government through the use of the federal False Claims Act and the filing of whistleblower lawsuits.
- http://www.taf.org/

National Taxpayers Union
- A non-partisan, public interest advocacy organization dedicated to lower taxes, less wasteful spending, and the principles of rational and limited government.
- http://www.ntu.org/

Concord Coalition
- Bipartisan advocacy organization that works for balanced federal budgets.
- http://www.concordcoalition.org/

Cato Institute: Fiscal Policy Studies
- Libertarian organization dedicated to reducing government spending and lowering taxes.
- http://www.cato.org/research/fiscal.html

PollingReport.com: Budget Polls
- Latest opinion surveys on budget-related issues.
- http://www.pollingreport.com/budget.htm

Taxpayers for Common Sense
- Centrist organization that works to eliminate wasteful government spending.
- http://www.taxpayer.net/

Citizens for Tax Justice
- Liberal public policy organization specializing in federal tax issues.
- http://www.ctj.org/

Center on Budget and Policy Priorities
- Liberal policy organization specializing in federal budget issues from a low-income perspective.
- http://www.cbpp.org/