Amalgamated Coalfields Ltd. v Janapada Sabha, Chhindwara (1962)

Res judicata is a rule about suits, written into s. 11 CPC. Two questions follow for public law: does it bind writ petitions, and if so, does the stricter branch — constructive res judicata, which shuts out points that might and ought to have been raised — bind them too?

This case gives the answer that every CPC student must be able to state: the general principle of res judicata applies to petitions under Arts. 32 and 226, but constructive res judicata, being "a special and artificial form of res judicata", should not generally be applied to them. It also explains why a decision on tax for one period does not ordinarily shut out a challenge to tax for another.

The appellants were colliery companies holding mining leases in Chhindwara District, Madhya Pradesh. The Janapada Sabha, successor of the Independent Mining Local Board, levied a coal tax under s. 51 of the Central Provinces Local Self-Government Act 1920. The tax was first sanctioned by the Government in 1935 at 3 pies per ton; the Mining Board later raised it in stages to 9 pies per ton.

In 1958 notices were served on the Amalgamated Coalfields Ltd and the Pench Valley Coal Co Ltd demanding tax at 9 pies per ton for January–June 1958. They challenged these notices by a writ petition under Art. 32. The Supreme Court dismissed it on 10 February 1961 (the first Amalgamated Coalfields case). At that hearing the appellants tried to raise a further point — that the increase from 3 to 9 pies was invalid — but the Court did not consider it, because it had not even been hinted at in the petition.

Fresh notices then demanded tax for different periods: for 1951–1957 (on coal sent outside the State), and for the half-years from 1958 to 1960. The appellants challenged these in writ petitions before the Madhya Pradesh High Court, on grounds different from those taken earlier. The High Court held the challenge barred by res judicata because of the earlier Supreme Court decision, and dismissed the petitions of these and other colliery companies. The companies appealed by special leave and also filed fresh petitions under Art. 32.

1. Does the general principle of res judicata apply to writ petitions under Arts. 32 and 226?
2. Does a decision on tax liability for one period operate as res judicata for a different period?
3. Does constructive res judicata bar new grounds, not taken in the earlier writ petition, in a later petition concerning a different period?
4. On the merits: was the levy at 9 pies per ton valid, and could the Sabha reopen assessments already made?

The appeals and writ petitions were allowed, with costs. The Sabha was restrained from recovering tax at more than 3 pies per ton, and from recovering additional tax for periods already assessed.

Res judicata applies to writ petitions

Relying on M.S.M. Sharma v Shree Krishna Sinha and Daryao v State of U.P., the Court held: "there can be no doubt that the general principle of res judicata applies to writ petitions filed under Art. 32 or Art. 226." That does not dilute fundamental rights: "the application of the doctrine of res judicata to the petitions filed under Art. 32 does not in any way impair or affect the content of the fundamental rights guaranteed to the citizens of India." It "only seeks to regulate the manner in which the said rights could be successfully asserted and vindicated in courts of law."

Tax for a different period

The present notices concerned a period different from the one covered by the first case. The Court observed: "In a sense, the liability to pay tax from year to year is a separate and distinct liability; it is based on a different cause of action from year to year". It reviewed English and Privy Council decisions — Broken Hill Proprietary Co v Municipal Council of Broken Hill, Hoystead v Commissioner of Taxation, Society of Medical Officers of Health v Hope, and Gaffoor v Income-tax Commissioner — and noted Lord Radcliffe's view that tax and rate assessments should not be "artificially encumbered with estoppels".

The Court drew a distinction and left one question open. A decision on a question of law that arises only incidentally in one year's dispute need not bind the next year. But if the validity of the taxing statute itself is upheld against an assessee, "it may not be easy to hold that the decision on this basic and material issue would not operate as res judicata against the assessee for a subsequent year" — though the Court said it was "unnecessary for us to pronounce a definite opinion" on that. In any case, a direct decision of the Supreme Court on a point of law binds all courts under Art. 141 as precedent, so the res judicata question there would be "of merely academic significance".

Constructive res judicata does not generally apply

The grounds now urged were "entirely distinct" from those raised before, so the High Court's decision could stand only if constructive res judicata applied to writ petitions. The Court held:

"In our opinion, constructive res judicata which is a special and artificial form of res judicata enacted by section 11 of the Civil Procedure Code should not generally be applied to writ petitions filed under Art. 32 or Art. 226."

It added that it was all the more reluctant to apply it "because we are dealing with cases where the impugned tax liability is for different years."

Art. 141 and law declared by implication

The High Court had relied on Art. 141. The Court answered that where law is said to have been declared by implication, "such implied declaration, though binding must be held to be subject to revision by this Court on a proper occasion where the point in question is directly and expressly raised by any party before this Court." The appellants could therefore raise their new contentions.

On the merits

• Art. 19(1)(f): rejected. The Rules gave assessees ample opportunity to object, so the levy was not "a capricious administrative or executive affair".
• Rate of 9 pies: "first imposition" in s. 51(2) was read to include a levy at increased rates, which therefore needed the Government's previous sanction. The increases had been made by the Mining Board itself, not with that sanction, so the notices demanding 9 pies per ton "must be held to be invalid". The Sabha could levy only 3 pies per ton.
• Reopening assessments: under Rule 10 an assessment became final, and there was no power to reopen it. "The finality provided for by Rule 10 will work as much against the respondent as against the assessees."

The general principle of res judicata applies to writ petitions under Arts. 32 and 226, so a point raised and decided on the merits in an earlier writ proceeding between the same parties cannot be reopened. But constructive res judicata — the artificial extension in s. 11 CPC to matters that might and ought to have been raised — should not generally be applied to writ petitions, particularly where the later petition concerns tax for a different period. A later petition may therefore raise distinct grounds not taken or not decided in the earlier one.

• Direct question: Does the doctrine of res judicata apply to writ petitions? Is constructive res judicata attracted? Start with s. 11 CPC; give Daryao for the general rule; then this case for the limit on constructive res judicata.
• Problem question: a company loses a writ challenge to a tax demand for one year; next year it challenges the demand on a new ground. Answer: the earlier decision on the points actually decided binds; the new ground is not shut out by constructive res judicata, especially since the tax period differs. Flag the open question if the earlier case upheld the statute's validity.
• Point worth marks: the difference between res judicata and precedent. Even where res judicata does not bind, a Supreme Court ruling on law binds all courts under Art. 141 — and a declaration only by implication can be revisited when the point is squarely raised.
• Short note: Res judicata in tax matters.