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The Government of Tanzania signed a Development Agreement with Panda Hill Tanzania Limited (a subsidiary of US-based Denham Capital / Tremont Investments) on 24 March 2026 in Mbeya to develop the Panda Hill niobium and ferroniobium project in the Mbeya/Songwe region. Under the agreement, the Government holds a 16% non-dilutable free carried interest in the project special-purpose vehicle, with Panda Hill Tanzania Limited committing to an initial capital investment of USD 442 million to construct Tanzania's first niobium mine and ferroniobium smelting plant — the first ferroniobium processing facility in Africa. At full production, the project is expected to supply approximately 4–5% of global niobium demand, generating USD 686 million in lifetime government revenues (royalties, taxes, and 16% equity dividends), positioning Tanzania among the world's top-four niobium producers alongside Brazil's CBMM, Canada's Niobec, and China Molybdenum.

On 20 March 2026, METI/MOFA (Japan) and the US Departments of State and Energy jointly published the "Japan–United States Critical Minerals Project Cooperation Joint Fact Sheet," identifying five specific upstream critical-mineral projects spanning four continents (Australia, Tanzania, Brazil, UAE, Namibia) to receive structured joint financing through JOGMEC equity and offtake instruments and US DFC/Ex-Im Bank facilities. The document operationalises the October 2025 US-Japan Critical Minerals Framework and the same-day Action Plan, converting policy-framework language into named project commitments covering nickel, lithium, battery-anode graphite, and heavy rare earths. It was released the day following the Takaichi–Trump summit on 19 March 2026 and follows the Critical Minerals Investment Ministerial convened in Tokyo on 14 March 2026.

Tanzania's Minister for Minerals issued the Mining (Local Content) (Amendment) Regulations, 2025 via Government Notice No. 563 of 2025, published on 12 September 2025 and in force on the same day with no grace period. The amendment overhauls the Mining (Local Content) Regulations, 2018 (GN No. 3 of 2018) and introduces a new Regulation 13A empowering the Tanzania Mining Commission to publish — in the Gazette, on its website, and in nationwide media — a list of "reserved" goods and services that may be supplied only by an Indigenous Tanzanian Company (ITC) that is 100% Tanzanian-owned (no joint venture permitted in those reserved categories). For non-reserved categories, non- indigenous suppliers must form a JV with an ITC operating in the same line of business in which the ITC holds at least 20% equity, with the JV agreement subject to prior Mining Commission approval. Sole-sourced contracts above ~USD 10,000 must be notified to the Commission, and Local Content Plans must now include Banking Services and Procurement sub-plans, channelling mining-related financial transactions through Tanzanian-registered banks.

Tanzania's Parliament enacted the Finance Act, No. 11 of 2025 on 30 June 2025 (presidential assent same day), in force 1 July 2025, introducing three structurally distinct amendments to the Mining Act, Cap. 123 that sit on top of the 2024-11-05 Written Laws (Miscellaneous Amendments) (No. 4) Act and the 2025-09-12 Mining (Local Content) (Amendment) Regulations GN 563/2025. (i) New Section 113A creates an "HIV Response Levy" at 0.1% of gross mineral value, payable concurrently with mineral royalty by all mineral-right holders and licensees, allocated 70% to the AIDS Trust Fund (under the Tanzania Commission for AIDS Act, Cap. 379) and 30% to the Universal Health Insurance Fund (under the Universal Health Insurance Act, No. 12 of 2023). (ii) Section 59 of the Mining Act is amended to extend the 20% local-value-addition gold-allocation requirement (mandatory supply of refined gold to domestic smelting, refining, and trading operators) from holders of mineral-development agreements to **all** gold-licence holders with no carve-out. (iii) The withholding-tax rate on non-resident service providers under Section 60 is raised to 10% to incentivise use of local service providers. The amendments combine a new social-fund mineral levy, a horizontal expansion of the domestic-beneficiation mandate, and a tax-side push for service localisation — adding a fiscal-instrument layer on top of the 2024-25 critical-minerals classification and 2025 local-content reservation framework.

Tanzania's Parliament passed the Written Laws (Miscellaneous Amendments) (No. 4) Act, 2024 (Bill No. 15 of 2024, published in the Special Gazette of the United Republic of Tanzania No. 34 Vol. 105 on 5 November 2024), which amends eight statutes including the Mining Act, Cap. 123. The mining-related provisions: (i) empower the Minister for Minerals, on recommendation from the Geological Survey of Tanzania (GST), to declare specific minerals as "critical" (essential to national economic, geopolitical, technology, or industrial use with limited or threatened supply) or "strategic" (mineral resources with diplomatic or defence importance) — the first Tanzanian statutory authority to do so; (ii) raise the minimum capital investment for a Mining Licence from USD 100,000 to USD 5,000,000 (a 50× hike pricing out junior explorers); (iii) authorise gemstone export following government-organised mineral auctions or international gem fairs while reaffirming the general beneficiation-in-Tanzania requirement on raw minerals and concentrates; (iv) require GST verification of mineral data on samples exported by mineral right holders; and (v) impose penalties for inaccurate or false mineral-data submissions. The Act establishes the gateway statutory authority for any future Tanzania critical- mineral export-control or stockpiling regime.

Tanzania's Parliament passed Act No. 10 of 2022, the Tanzania Investment Act, 2022, on 2 December 2022, repealing the Tanzania Investment Act 1997 (Cap. 38 / Act No. 26 of 1997) — the first major overhaul of the country's foreign-investment legal framework in 25 years. The new Act restructures the Tanzania Investment Centre (TIC) into a One-Stop Facilitation Centre with an integrated electronic system, introduces Strategic and Major Investment Certificates (with capital thresholds of USD 50m foreign / USD 20m local plus minimum 1,000 local jobs and 50% export-uplift requirements), reduces the minimum capital threshold for ordinary local investors from USD 100,000 to USD 50,000, and codifies dispute-resolution access via local arbitration, ICSID, and bilateral/multilateral investment protection agreements. The Act was operationalised by Government Notice No. 94 of 17 February 2023.

Tanzania's Parliament enacted Act No. 5 of 2017, the Natural Wealth and Resources (Permanent Sovereignty) Act, as part of a landmark resource-nationalism legislative trio (alongside Act No. 6 on unconscionable contract renegotiation and Written Laws Miscellaneous Amendments No. 7), signed into law by President John Magufuli on 4 July 2017. The Act vests all of Tanzania's natural wealth and resources — minerals, oil and natural gas, fisheries, wildlife, forestry, water, and related sub-surface assets — as the permanent and inalienable property of the People of the United Republic, held in trust by the President on their behalf. Key operative provisions prohibit international commercial arbitration of natural-resource disputes (mandating adjudication within Tanzanian courts under Tanzanian law), empower Parliament to review and require renegotiation of any natural-resource arrangement containing "unconscionable terms," impose an in-country banking rule on earnings from natural wealth extraction, and authorise statutory override of contractual stabilisation clauses embedded in pre-2017 mining development agreements. The Act is the foundational parent statute underpinning all subsequent Tanzanian mining-sector reform, including the 2024 Written Laws (Miscellaneous Amendments) (No. 4) Act critical/strategic minerals classification and the 2025 Finance Act mining amendments.