Irs Tax Fourth Stimulus Checks 2024. The irs will charge 8% interest on estimated tax underpayments, according to the new york post. Credits for the 2020 and 2021 tax years can be claimed retrospectively by individuals, according to the irs.

The irs issued more than 169 million payments in the third round of direct stimulus aid, with the $1,400 checks reaching most american households. June 15, 2024, marked the deadline for claiming the first two stimulus checks totaling up to $1,800 per qualifying u.s.