Taxes owed on a 2023 federal tax return had to be paid on or before April 15, 2024 to avoid a late payment penalty. Any tax payment received after April 15, 2024 is considered a late payment subject to penalties and interest.
The extension request to file the 2023 tax return on or before October 15, 2024 is only for filing the 2023 federal tax return, not an extension for payment of taxes.
