Washington Post personal finance columnist Michelle Singletary will answer your tax questions March 17 from noon to 1 p.m. Eastern. She will be joined by Eric Bronnenkant, head of tax at Betterment, a digital investment advisory firm. He has also had stints with Ernst & Young and Fidelity Investments. This will be the second live chat they have hosted on taxes this year. At last month’s tax chat, many readers had questions concerning 1099s and RMDs.