Need GST help for my business

What is the problem then ...

Apparently, it seems your purchase is from URD so no ITC and sale is @ 18%. 

For more details -

CA Sachin M Jain .8O975. l5447

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I filed GST 1 for the month of March, 2021 correctly on 6th April with total output GST of around Rs. 80K. However while filing GST 3B due to some error the return has been filed with as NIL return. Can someone please guide now can I show the total sales and ITC in next GST 3b. If yes, do I need to pay the interest also? Please tell the correct way to calculate interest and also please tell can I manually enter the interest details in point no 5 in GST 3B?

Also, can you please tell that since the financial year will change and even if show the total sales in next GSTR 3B it will be shown in the next financial year. So how will I file the annual return because my output as per GSTR 1 and GSTR 3b will not match
 

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