Internal Revenue Service
The IRS takes a lot of criticism, but it’s hard to criticize this web site.  Here you can download IRS forms and publications, obtain general tax information, and find out how to resolve problems with the IRS.

Maryland Comptroller of the Treasury
Register your business with the state of Maryland online, check the status of your Maryland tax refund, get Maryland tax forms, or check withholding tables.

Federation of Tax Administrators
Download tax forms from any state.

Maryland State Department of Assessments and Taxation
This web site gets over 100,000 hits per day.  Click on “Business Entity (Corporate) Information” to obtain information about forming a Maryland corporation or Limited Liability Company.

Social Security Administration 
Find out how to apply for benefits, what to do when a beneficiary dies, or how to request a statement of earnings and benefits.

Maryland Charitable Organizations Division  
I added this link to help my Maryland tax-exempt clients stay in compliance with the Maryland Charitable Solicitations Act.  If you give to charity, you can obtain financial data about the organizations that you contribute to.

Injured Workers' Insurance Fund
Maryland law requires workers' compensation insurance for most employees.  Use this web site to obtain more information.