06 July 2020
Yes, You can claim till 20th October 2020. As per the provision, u/s 16(4) of CGST Act, 2017, a taxpayer can take the input tax credit in respect of any invoice for the supply of goods or services or both before the due date of furnishing of the return u/s 39 for the month of September following the end of the financial year to which such invoice pertains or up to the filing of relevant annual return, whichever is earlier
For 2019-20 you can claim till 20th Oct 2020 ( Date of filing GSTR 3B for Sep 2020)