TAXING TIMES IRS to delay April 15 tax filing deadline by one month after chaotic year with stimulus check confusion, Dems say Updated: 17 Mar 2021, 20:13 THE Internal Revenue Service has extended the April 15 tax filing deadline to May 17 a year after coronavirus hit the US, two lawmakers said today. Americans now have more time to file their tax returns and pay any outstanding fines, according to two congressional Democrats on Wednesday after multiple tax law changes and the stimulus check rollout. 7 7 The Form 1040 is a way for for people to claim any missing $1,200 or $600 stimulus payments from 2020Credit: Getty The IRS did not respond to The Sun earlier this afternoon.