Critical Minerals Tax 2026: What Budget 2026-27 Actually Offers Energy Miners in India
Author : Commercial Law Chamber (CLC) | Published On : 04 Apr 2026
India's Union Budget 2026-27 did something that budgets rarely manage. It delivered on a stated priority rather than just repeating it. For companies operating in mining and energy, the direct and indirect tax changes around critical minerals are specific enough to actually move project economics. But extracting the benefit requires understanding what the law actually says, not just what the headlines claim.
What is the Section 51 Deduction
The most consequential direct tax change is the proposed inclusion of additional critical minerals in Schedule XII of the Income Tax Act. This allows expenditure on prospecting and exploration to qualify for deductions under Section 51, improving the economics of discovering new mineral resources.
Under Section 51 of the Income Tax Act 2025, an Indian company or resident person engaged in operations relating to prospecting, extraction, or production of any mineral is allowed a deduction of one-tenth of qualifying expenditure in each of the relevant tax years. This deduction is spread across ten tax years beginning from the year of commercial production. The qualifying expenditure covers costs incurred in the year of commercial production and up to four preceding tax years. Capital expenditure on buildings, machinery, plant, or furniture that already qualifies for depreciation under Section 33 is excluded.
That is the actual structure, a 10-year amortization of exploration and prospecting costs, not the "5-year window" that has been circulating in some commentaries. For a mining company or energy firm making a capital-intensive bet on lithium, cobalt, or rare earth exploration, this provision meaningfully improves the IRR on projects that previously had no structured avenue to recover upstream costs against taxable income.
If your project is at the exploration stage, getting the expenditure classification right from the start matters. Once you claim under Section 51, you cannot claim the same expenditure under any other provision. This is precisely where working with a best tax lawyer in India protects project returns rather than inadvertently foreclosing deduction options through poor documentation.
Customs Exemptions: Lower Entry Costs for Critical Mineral Processing
On the indirect tax side, the budget's customs changes are straightforward and significant. The Budget exempts capital goods used for manufacturing lithium-ion cells, imports of goods required for nuclear power projects, and capital goods required for processing of critical minerals from basic customs duty. The extension of BCD exemption on capital goods used for manufacturing lithium-ion cells was also confirmed.
For companies importing high-value processing equipment, primarily sourced from Germany, Japan, South Korea, and increasingly China, this reduction in landed cost is real money. Critical mineral processing machinery does not come cheap, and import duties on such equipment have historically added 7.5% to 10% to acquisition costs.
The catch is classification. The exemption applies only to goods falling within specific HS codes as notified. Misclassification disputes at customs are among the most common and time-consuming litigation matters in trade law. Getting an advance classification ruling before the equipment ships is worth the effort. For companies already dealing with FTA challenges and classification disputes, this budget creates new opportunities but also new surface area for disputes if the groundwork is not laid properly.
The Broader Policy Frame: Rare Earth Corridors and NCMM
The tax changes do not sit in isolation. The government proposed supporting mineral-rich states including Odisha, Kerala, Andhra Pradesh, and Tamil Nadu in establishing dedicated Rare Earth Corridors to promote mining, processing, research, and manufacturing. The National Critical Mineral Mission, which aims to enhance domestic production, recycling of critical minerals, and overseas acquisition of critical mineral assets, received a budgetary allocation of Rs 440 crore in 2026-27. The Budget also allocates Rs 500 crore under the National Mineral Exploration and Development Trust, supporting mineral exploration activities.
The government's direction is clear. India is trying to build the full value chain domestically, from prospecting through processing to manufactured output. Tax policy is being used to make the economics of doing that in India more attractive than exporting raw ore for processing abroad.
What This Means for Delhi, Mumbai, and Bangalore-Based Businesses
For corporate and legal teams in Delhi managing compliance for mining conglomerates, the Section 51 deduction structure requires careful integration with the broader tax filing strategy, particularly around MAT. The Finance Bill proposes to reduce MAT from 15% to 14% of book profits for companies not opting for the concessional 22% tax rate, and restricts set-off of existing MAT credit to 25% of tax liability. A tax law firm in Delhi advising mining clients needs to model both the Section 51 deductions and the MAT implications together, not separately.
For Mumbai-based project finance and energy funds structuring deals around critical mineral assets, the predictability of the Section 51 framework is exactly what lenders need to underwrite long-gestation projects. The deduction structure is now time-bound and statutory, rather than subject to annual budget uncertainty.
For companies in Bangalore and Hyderabad looking at land acquisitions in mineral corridors in neighbouring states, the interaction between mining rights, land acquisition costs, and direct and indirect tax treatment of development expenditure needs to be mapped before deals are signed. A property tax consultant near you in Bangalore will handle the local asset side, but the cross-cutting picture requires a specialist view under the Union Budget 2026-27 framework.
Where the Complexity Lies
Budgets announce direction. The Finance Bill and subordinate notifications fill in the detail, and the detail is where most companies either capture or lose the benefit.
A few areas to watch closely. GST on mineral royalties remains contested. The TCS rate on minerals has been revised in this budget, and its interaction with the existing royalty GST disputes needs to be tracked. The customs exemption on capital goods will generate HS code disputes at port. The Section 51 deduction has specific exclusions that are easy to miss during expenditure classification. Building a robust regulatory compliance framework before problems arise is always less expensive than resolving them afterward, particularly in a sector that now has direct government attention and, with it, direct scrutiny.
Getting the Tax Structure Right
The critical minerals tax 2026 framework is genuinely favourable. The Section 51 amortization benefits, customs exemptions on processing equipment, and the broader NCMM push together create a more investable environment than India's mining sector has seen in some time.
The gap between a favourable policy and an optimised tax position is real though, and bridging it requires precise legal and financial execution from the outset. Whether you are a mining company structuring a new exploration project, an energy tax consultant in Mumbai advising a fund, or a CFO in Delhi reviewing the amortization treatment of last year's exploration expenditure, the 2026 changes reward careful planning and penalise assumptions.
To understand how these provisions apply to your specific situation, the team at Commercial Law Chamber is available for a detailed consultation.
Frequently Asked Questions
1. Which minerals are covered under Section 51 of the Income Tax Act 2025?
The deduction applies to minerals listed in Schedule XII of the Income Tax Act 2025. Budget 2026-27 proposed adding further critical minerals to this schedule, expanding the list beyond what was originally covered. Companies should verify the current Schedule XII and any notifications issued under it before structuring their tax position, as the list is subject to revision by the government.
2. How long is the amortization period and how is the deduction calculated?
The deduction runs for ten tax years, beginning with the year commercial production commences. Each year, the company claims one-tenth of the qualifying expenditure as a deduction. If the deduction cannot be fully absorbed in a particular year, the unabsorbed amount carries forward to the next year. No carry-forward is permitted beyond the tenth year, so companies with irregular income in early production years need to plan accordingly.
3. Can a company claim both the Section 51 deduction and the Budget 2026-27 customs duty exemption on the same project?
Yes. These are two separate provisions under two separate statutory frameworks. The Section 51 deduction applies to prospecting and mine development expenditure under the Income Tax Act 2025. The BCD exemption applies to imported capital goods used for processing critical minerals under the Customs Tariff framework. A single project can legitimately benefit from both, provided the conditions for each are independently satisfied.
4. What are the GST implications for companies in critical mineral extraction and processing?
Mining and processing activities attract GST at different rates depending on whether the output is a raw ore, a processed mineral, or a refined product. Royalties paid to state governments attract GST under reverse charge, meaning the mining company pays GST on royalties and claims input tax credit subject to eligibility conditions. Section 17(5) of the CGST Act contains specific restrictions on input tax credit that companies in this sector need to map carefully to avoid blocked credit accumulation affecting their overall tax cost.
5. Does the BCD exemption on critical mineral processing capital goods apply automatically?
No. Importers must identify the correct customs notification, confirm their goods fall within the specified description, file end-use undertakings, and meet post-import compliance conditions. The exemption is not self-executing. Treating it as automatic, without proper documentation in place, creates a real risk of duty recovery with interest during post-clearance audits.
6. What happens to the Section 51 deduction if a project is abandoned or a license is surrendered before the ten-year period ends?
The provision does not address this with complete clarity. The treatment of unamortized expenditure in abandonment or transfer scenarios will depend on the interpretation adopted by the Income Tax Department and any clarifications issued over time. Companies anticipating early exit, license transfers, or project restructuring should seek specific tax advice before acting rather than relying on assumptions about the outcome.
