What is the time limit to make an e invoice ??
There is no time limit. However, suggested to generate closest to the date of invoice.
if anyone had turnover more than 20 crore in previous year i,e. 2122 but in the f.y.2223 is less than 50 lakhs, is he liable to make an e invoice ??
Yes. Even if the turnover exceeds Rs. 10 Cr (present limit) in any of the previous years, then e-invoicing is applicable. The applicability could be checked on e-invoice website as well.
can one make a credit note on 31st March & e invoice now ?? heard it , There has a penalty for non generation of e invoice -100% tax due or Rs. 10000 whichever is higher ??
Yes, you can generate the e-invoice for the credit note today. If you generate the IRN today, there would not be any penalty.
If e-invoice is not generated, then the invoice itself is not valid. The recipient could be denied the credit in addition to penal consequences for the supplies.