AARP Tax-Aide is the nation's largest volunteer-run tax assistance and preparation service, preparing tax returns and answering tax questions free of charge. AARP Tax-Aide is a program of the AARP Foundation and is offered in conjunction with the IRS. Most taxpayers receive in-person assistance at one of the estimated 7,000 sites nationwide Sites are located in malls, libraries, banks, senior centers, and other convenient facilities. We also provide shut-in service upon special request, whenever possible.