Excise duty adjustment and CAS-4 based interunit transfer valuation resolved; appeal allowed and impugned order set aside.

Adjustment of excise duty arose where excess duty paid in some months was offset against short payments in others; valuation for interunit transfers relied on annual CAS-4 costing with provisional assessments subsequently reconciled to quantify differential duty on an annual basis. Tribunal treated the issue as settled by an earlier final CESTAT Ahmedabad order, concluding the matter was not res integra. Consequent to that reliance, the impugned order was set aside and the appellant granted relief correlating to the annual reconciliation and duty adjustment outcome.

---

---

Issues: Whether, for clearances to a related/another unit where valuation is determined under Rule 8 based on CAS-4 annual costing, the duty liability for the year must be quantified by considering duty already paid during the year and whether excess duty paid in some months can be adjusted against short payment in other months.

Analysis: The Tribunal examined the scheme of valuation under Rule 8 of the Central Excise Valuation Rules, 2000 and the CAS-4 methodology which computes cost on an annual basis reconciled with audited accounts. Authorities and precedent (including Essar Steel, Jindal Steel, Suzlon, Bajaj Tempo and Godrej-related decisions) were applied to the facts: where annual CAS-4 costing forms the basis for valuation, the overall duty liability for the year must be determined on that annual basis. The Tribunal noted that when annual costing is used to arrive at the assessable value, some months may show excess payment and others short payment; quantification of differential duty must therefore account for duty already discharged during the relevant period. Section 11B and unjust enrichment principles were considered and held not to preclude such adjustment when the demand is based on annual costing; provisional assessment under Rule 7 is an alternative where appropriate but was not relied upon by the appellant in the facts of this case.

Conclusion: The appeal is allowed. The adjudicating authority is directed to adjust excess duty paid in certain months against short payments in other months when valuation is determined on annual CAS-4 basis and to recover only the net differential, if any, with consequential reliefs as per law.

---