Money Taxes Q&A: How do I file a tax extension for 2021? How do I file my taxes online for free? May 15, 2021May 15, 2021USA TODAYComments Off on Taxes Q&A: How do I file a tax extension for 2021? How do I file my taxes online for free? How do I file if I didn't got a Notice 1444? I never got my mailed stimulus, can I claim it? USA TODAY Money reporters answer your tax questions.