India Passes MMDR Bill to Centralise Mineral Tax, States Push Back

India’s Parliament cleared the MMDR Amendment Bill 2026 on 13 August 2026, passing both houses in three days and delivering the most significant shift in mineral taxation authority the country has seen in decades. The legislation, which awaits Presidential assent, centralises control over taxes on mineral rights and mineral-bearing lands with the Union government, effectively closing the fiscal space that a nine-judge Supreme Court ruling had left open for states just 14 months earlier. For mining operators and investors active in India, the Bill’s provisions carry immediate consequences: disputed state levies stretching back over a decade face extinguishment, a uniform central framework replaces state-by-state variation, and a new contested implementation phase has begun.

What the MMDR Amendment Bill actually changes, provision by provision

The Bill amends the Mines and Minerals (Development and Regulation) Act, 1957, across three operative provisions:

1. Amended Section 2 expands the Union’s regulatory declaration to include “mineral bearing lands” alongside mines and mineral development. A new statutory definition is inserted: “mineral bearing land” means any land having mineral contents as per parameters the Central Government prescribes.
2. New Section 9D restricts state governments from imposing any tax, cess, or levy on mineral rights or mineral-bearing lands except in accordance with conditions or restrictions prescribed by the Centre. Subsection (2) deems unpaid state levies invalid at all material times from commencement, while protecting revenues already collected by states from refund obligations.
3. Amended Section 13 grants the Central Government explicit rule-making power to prescribe the conditions under which states may still impose permitted levies. Some residual state taxing power survives, but only within a centrally defined framework.

“Uniform and balanced fiscal framework for the mineral sector nationwide.” — The Centre’s stated framing for the legislation

Union Coal and Mines Minister G Kishan Reddy introduced the Bill in the Lok Sabha on 10 August 2026. The Lok Sabha passed it on 12 August; the Rajya Sabha cleared it the following day. The structure of Section 9D(2) is particularly material for investors: outstanding disputed levies are extinguished, but amounts already paid to states are not refunded, making the retrospective treatment asymmetric by design.

How India arrived here: the 2024 Supreme Court ruling that this Bill answers

On 25 July 2024, a nine-judge Constitution Bench ruled 8:1 in Mineral Area Development Authority v. Steel Authority of India Ltd. that royalty under Section 9 of the MMDR Act is not a tax. The ruling confirmed that states retain power under Entry 50 (List II) of the Seventh Schedule to levy taxes on mineral rights, but that power is expressly “subject to any limitations imposed by Parliament” under Entry 54 (List I).

The distinction matters. By holding royalty is not a tax, the Court preserved constitutional space for independent state mineral levies alongside central royalty. By preserving Entry 54’s limitation mechanism, the Court also handed Parliament a tool to restrict that space by statute.

The Supreme Court of India’s 2024 judgment in Mineral Area Development Authority v. Steel Authority of India Ltd. overruled the earlier India Cement Ltd. position and confirmed that royalty is not a tax, simultaneously preserving Entry 50’s limitation mechanism as the constitutional instrument through which Parliament could later act to constrain state mineral levies.

The constitutional clause the 2026 Bill is built on

Entry 50 expressly subjects state mineral taxation to “limitations imposed by Parliament” under Entry 54. The 2024 Court explicitly preserved this limitation mechanism while ruling royalty is not a tax. Section 9D is Parliament’s direct exercise of that limitation power, making the Bill constitutionally grounded in the judgment’s own logic.

Judicial interpretation in this area has been volatile. Courts ruled against state-imposed royalties in the 1990s, reversed that position in 2004, and the resulting fragmentation prompted multiple states to pass independent legislation. The consequences for operators were substantial:

India’s mining tax law has been shaped by decades of federal tension between state fiscal autonomy and the Union’s regulatory ambitions, a history that makes the 2026 amendment’s centralisation provisions more structurally significant than a single legislative cycle might suggest.

• State-by-state variation in mineral taxation created an unpredictable compliance landscape
• Several states enacted their own levies after the 2004 reversal, with overlapping and sometimes contradictory regimes
• Some mining operators faced retrospective liabilities extending across 10 to 15 years

Why the constitutionality of the Bill is genuinely contested

The Centre’s framing is confident; the constitutional architecture is less settled. Two primary grounds of challenge are likely to reach the Supreme Court:

• Parliament’s competence over “mineral-bearing lands” may exceed what Entry 54 (List I) authorises. Land is assigned to states under Entry 18 (List II), and the constitutional text does not explicitly make mineral-bearing land a central subject. Extending Union control to land containing minerals could be argued to encroach on state powers beyond what mineral development regulation permits.
• The scope of Section 9D’s limitations may exceed what Entry 50 envisages. By conditioning virtually all state levies on central approval, Section 9D arguably converts a state taxing power into a centrally administered permission, hollowing out rather than limiting Entry 50.

PRS Legislative Research has explicitly flagged that Parliament’s competence to regulate mineral-bearing lands “may not” be legally settled, a significant assessment from a credible third-party source. Constitutional challenges are expected via Article 131 (original jurisdiction) or Article 32 petitions, focusing on federal balance and legislative competence.

The outcome of these proceedings will determine whether Section 9D survives intact, is read down, or is struck.

How the Bill treats past levies, and what that means for mining operators

Section 9D(2) draws a deliberate line between what states have already collected and what remains outstanding. The sequence, once the Bill commences, operates as follows:

1. The Central Government notifies the commencement date via gazette notification
2. All unpaid state levies on mineral rights or mineral-bearing lands are deemed invalid at all material times, extinguishing pending demands and live litigation
3. Amounts already deposited with or recovered by states before commencement are protected and will not be refunded
4. Refund claims against states for previously collected amounts are extinguished

For some mining operators, disputed state levies had accumulated across 10 to 15 years of retrospective liability. The Bill’s commencement would extinguish the unpaid portion of that exposure in a single notification.

The design is asymmetric, but the asymmetry serves a dual purpose. Operators gain concrete relief from legacy financial exposure. States retain revenues already collected, cushioning the fiscal shock and reducing the immediate political cost of the reform. For investors holding positions in Indian mining operations, the extinguishment of unpaid levy demands is a near-term positive, conditional on Presidential assent and commencement notification.

Mineral offtake trends in India’s coal sector illustrate the commercial stakes behind the MMDR amendment’s fiscal architecture: record dispatch volumes in mid-2026 show how significant the revenue flows subject to the new tax regime have become, and how much is at stake in the constitutional proceedings that follow.

Beyond tax centralisation: the other reforms mining investors should track

The taxation provisions have attracted the most attention, but the Bill contains several additional reforms with independent investment significance:

• Critical and strategic minerals: The legislation promotes exploration and development of lithium, graphite, nickel, cobalt, gold, and silver, positioning India within the global critical minerals competition
• Lease flexibility: Mining lease holders can add newly discovered minerals within the same lease area, in many cases without a fresh lease and without additional payment beyond existing royalty or auction premium
• Minor minerals integration: Minor minerals may be included in leases granted for major minerals, with states determining applicable royalty in such cases
• Mineral exchange authority: A new authority is proposed to register and regulate mineral exchanges, aimed at modernising trading and price discovery

India’s rare earth supply chain ambitions give the MMDR amendment’s critical minerals provisions strategic weight beyond domestic taxation reform; centralising mineral-bearing land regulation is partly designed to accelerate the lease and permitting pathways needed to compete with established producers in lithium, graphite, and rare earth magnet inputs.

Lease flexibility and the mineral exchange proposal

The lease flexibility provision addresses a practical friction point: when operators discover additional minerals within an existing lease boundary, the current process often requires a fresh tender. The amendment allows operators to add those minerals to the existing lease in many cases, reducing transaction costs and administrative delay.

The mineral exchange authority, if operationalised, would create regulated infrastructure for mineral trading and price discovery. Both reforms reduce friction for operators with existing lease portfolios and signal a broader policy intent to make India more competitive in global critical minerals supply chains.

What investors should watch before treating the new framework as settled

The Bill creates a framework, not a resolved reality. Three phases of events will determine whether the promised clarity materialises:

1. Immediate: Presidential assent followed by gazette notification of the commencement date. Neither has occurred; the new regime is not operative until that date is set.
2. Near-term: The content of rules framed under amended Section 13, which will define what residual state taxing power survives and on what conditions.
3. Medium-term: Supreme Court proceedings on Parliament’s competence over mineral-bearing lands and the permissible scope of Section 9D limitations, alongside political accommodation between mineral-rich states and the Centre over lost revenue.

States that lose direct tax tools may seek alternative channels of influence through land acquisition facilitation, environmental clearances, and permitting timelines, a regulatory risk not yet reflected in formal government documents but a reasonable inference from the removal of fiscal autonomy.

Government intervention in mining has become a recurring theme across jurisdictions, with private capital allocators increasingly factoring the pace and form of state involvement into project valuation, a dynamic directly relevant to how investors price the MMDR amendment’s centralisation provisions and the regulatory uncertainty that follows.

Investors who treat commencement notification as the end of uncertainty rather than the beginning of a contested implementation phase are likely to be poorly positioned for the constitutional and political dynamics that follow.

A framework asserted, not yet secured

The MMDR Amendment Bill 2026 is a decisive assertion of Union authority over India’s mineral taxation architecture. Its constitutional grounding is well-argued, built on a limitation mechanism the Supreme Court itself endorsed in 2024. It is not, however, constitutionally settled.

Reduced retrospective exposure and improved forward predictability are real near-term gains for mining operators and investors. Both are conditional on commencement notification, the content of Section 13 rules, and the Supreme Court’s eventual disposition of the competence questions that PRS Legislative Research and legal analysts have already flagged.

India’s mineral taxation framework has entered a new contested phase. The Bill’s final practical shape will be determined as much in court as in the gazette.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions.