- It's not free
- It's not the government's web site, so it's likely not accurate for newer businesses
Another great benefit here is that you can link directly to a search via the search results URL: http://www.irs.gov/app/ePostcard/search.do?nameSearchTypeStarts=false&names=&nameSearchTypeAll=false&city=&state=All...&country=US&ein1=11&ein2=1111111&dispatchMethod=search&submitName=Search
Simply replace the EIN1 and EIN2 variables in the URL from 1's to whatever the Tax ID is that you're looking up.