2021-03-15 2020 Partnership and S-Corporation Returns Due 2020 Partnership and S-Corporation Returns Due March 15, 2021 2020 Partnership and S-Corporation Returns Due
2021-03-31 Deadline for businesses to e-file Forms 1099 and 1096 to the IRS, except Form 1099-NEC Deadline for businesses to e-file Forms 1099 and 1096 to the IRS, except Form 1099-NEC March 31, 2021 Deadline for businesses to e-file Forms 1099 and 1096 to the IRS, except Form 1099-NEC