Excise Duty Calculation...

Excise duty is not related to cost price, its charged on transaction or assessable value.

for assessable value of 100

Cenvat .10% 10.00

E Cess 2%.....0.20

S&HEC1%......0.10

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Total ...............10.30

for reverse calculation 100*100/110.3=90.66

assessable value 90.66

cenvat 10% ....9.07

E Cess ...........0.18

S&HEC............0.09

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Total ................9.34

Duty calculation and reverse calculation working is attached.