Dear Sir,
Based on the facts provided in your query, please note that RCM is applicable in case of import of services and the value would be the amount actually charged from you net of any charges, i.e. INR 4888.56 in your example.
Please note that forex charges are levied by your bank as a % on the value of conversion done by you and the bank charges GST on the same.
That portion is a taxable supply in India and as such does not tantamount to import of services.
On the contrary you may seek a break up of such charges from your bank and take ITC of the GST charged by them.
In so far as the accounting aspect is concerned, on receiving the breakup from bank, you may then charge them to the respective head, i.e. 4888.56 to service expense, and the balance portion as bank charges and GST ITC.
In so far as TDS is concerned, the same is required to be deducted u/s 195 and Form 15CA & 15CB need to filed also.
In case of non compliance applicable interest is leviable.
Please connect in case of any further clarifications.
Thanks & Regards,
CA Aditya Dhanuka.