The IRS approves hundreds if not thousands of 501c3 applications each year. In the interest of the donor community we are providing a link to the list of all Massachusetts non-profits. If you consider your entity a 501c3 or other type of non-profit the name of your organization will appear on this list. If you are not an incorporated non-profit entity you may be in violation of section 501c3 of the tax code. This can result in litigation with the IRS. For a complete list of Non-profits in Massachusetts please visit the link below select your geographic region and your list will open in excel format.