The due date to deposit TDS is the 7th of the following month. However, the due date for the deposit of TDS for the month of March is 30th April of next financial year.
For example: If you have deducted TDS in the month of April 2020 then you need to deposit the same by 7th May 2020. You can deposit the TDS online by filing Challan No. 281.
In case of late deposit of TDS, there is a penalty interest of 1.5% per month from the date on which tax was deducted to the date on which such tax is actually paid.