is it possible to make an EWS certificate today for the Financial Year 2018-19?? i. e for back date.
You cannot get a backdated EWS Certificate. This is primarily because EWS reservation was introduced in the year 2019. And so the first EWS Certificate was primarily for the year 2019-20. So trying to get a certificate issued for the timeline when the reservation was not even introduced cannot happen. And while issuing an income certificate, the last 3 years of income details are looked into an then an Income certificate is given which is valid for 1 Financial year in the case of EWS.