Best-judgment valuation in a composite contract upheld, but earlier demands and penalties failed on limitation and uncrystallised escalation charges.

In a composite contract for PSC pipes, assessable value may be fixed on a best-judgment basis under Rule 7 where the declared valuation is unreliable and the Chartered Accountant's certificate omits relevant cost elements; comparable scientific data and similar supply rates can support the valuation. The earlier demand for undervaluation and related penalties fails where the extended limitation period is unavailable because records were already furnished, the unit was audited, and returns were filed. Duty cannot also be demanded on escalation charges that have not crystallised or been actually received. The valuation approach was upheld on merits, but limitation, penalties, and escalation-charge demands were not sustainable.

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Issues: (i) Whether the assessable value of the PSC pipes supplied under a composite contract could be determined under the best judgment method by rejecting the Chartered Accountant's certificate and adopting the KUWSDB data rate under Rule 7 of the Central Excise (Valuation) Rules, 1975. (ii) Whether the demand for undervaluation, together with penalties, was barred by limitation for the earlier period and whether the separate demand for escalation charges was sustainable.

Issue (i): Whether the assessable value of the PSC pipes supplied under a composite contract could be determined under the best judgment method by rejecting the Chartered Accountant's certificate and adopting the KUWSDB data rate under Rule 7 of the Central Excise (Valuation) Rules, 1975.

Analysis: The contract was composite and did not bifurcate the value of pipes from the post-manufacturing activities. The Chartered Accountant's certificate was not accepted as conclusive because it omitted certain cost elements. In such circumstances, the Revenue was entitled to determine value under Rule 7 on best judgment basis. The KUWSDB data rate was found to be scientifically prepared and supported by comparable material, including the rate structure of similar supplies by another manufacturer. The valuation adopted by the Commissioner was therefore upheld on merits.

Conclusion: The valuation method was valid and the demand founded on undervaluation was sustained on merits.

Issue (ii): Whether the demand for undervaluation, together with penalties, was barred by limitation for the earlier period and whether the separate demand for escalation charges was sustainable.

Analysis: The show cause notice covering the earlier period was issued after a long delay despite the certificate having been furnished earlier, the unit having been audited, and regular returns having been filed. The extended period was therefore not available, and the demand for that period, as well as consequential penalties, could not survive. As regards escalation charges, the amount was disputed and had not crystallised or been actually received, so duty could not be demanded on that basis at that stage.

Conclusion: The earlier period demand and the penalties were barred by limitation and set aside, and the demand on escalation charges was also set aside.

Final Conclusion: The valuation method was accepted on merits, but relief was granted to the assessee on limitation, penalties, and escalation charges, resulting in a partial allowance of the appeals.

Ratio Decidendi: Where the declared value in a composite contract is unreliable, assessable value may be fixed under the best judgment method on the basis of comparable, scientifically derived data; however, demands for earlier periods fail if the extended limitation period is not available, and duty on disputed escalation amounts cannot be demanded before actual receipt or crystallisation.

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