Effect of rate change in export on gst refund

This query is : Resolved

ankit gupta (Querist)
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09 September 2020 i have exported certain goods for $100000 under payment of IGST. on the date of removal, custom exchange rate was say, RS. 75.2/- and on the date of presentation of shipping bill, exchange rate is Rs. 74.50/-. now I am eligible for gst refund 1341000/- ($100000*18%*74.50). However, my e-way bill shows tax liability of Rs. 1353600/- ($100000*18%*75.2).
How to reconcile this amount in books of accounts and e-way bill?
Can I amend my invoice so that my above amounts are equal in books, GSTR-1 and shoipping bill? and will there be any impact due to mismatch in eway bill?

Lekhraj sood

Lekhraj sood (Expert)
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09 September 2020 As per rule 34 you have to use the exchange rate declared by Custom authorities for every month.So your invoice and shipping bill should be of same exchange rate. ewaybill values will be based on tax invoice.
In this particular case you can change the tax amount equal to shipping bill tax in GSTR1 and GSTR3B.