

Is Wisconsin extending estimated income/franchise and pass-through withholding tax payments due on Ap(e.g., first estimated tax payment for the 2021 calendar year)?.How does the federal extended due date affect underpayment interest (UPI) on estimated taxes for the 2020 tax year?įor Wisconsin purposes, no UPI will apply to any estimated tax payments made for 2020 individual income tax returns (Forms 1 and 1NPR) that have an original federal due date of April 15, 2021.See questions 3 and 4 below regarding underpayment interest (UPI) on estimated taxes. See the chart below for Wisconsin tax return due dates. Yes, unpaid individual income taxes for the 2020 tax year that are originally due on April 15, 2021, will not accrue interest or penalties until May 18, 2021. Is Wisconsin postponing interest and penalties as a result of the extended due dates?.

For individual income tax returns that have an original federal due date on April 15, 2021, the due date is extended to May 17, 2021. Yes, federal extensions provided in the IRS notice may be used for Wisconsin individual income tax purposes.

