Mine Closure in Tanzania: The Bond Outlives the Licence

This page is the mine closure operating file: what a mineral-right holder owes the regulator when production stops, and what releases the security. It is not an engineering manual.

• Licence classes next time: battery metals
• The plant that also comes down: Dodoma concentrate processing
• Export desk for residual output: gold doré routes
• The audit that runs to closure: environmental audits after the certificate

As at 14 September 2026. Live conditions sit with the Mining Commission; this file rests on Cap. 123, Cap. 191 and the regulations under both.

The obligation sits inside the mineral right

There is no closure licence. Cap. 123 requires an application for a special mining licence or a mining licence to carry a plan for progressive reclamation of the land disturbed, and the right is granted on that plan. The duty attaches on grant and survives expiry, surrender and revocation.

Two desks hold it at once. The Commission approves the plan, holds the security and certifies completion. NEMC owns the environmental certificate, the annual audit and the decommissioning audit that must precede physical works, under Cap. 191 and the Environmental Impact Assessment and Audit Regulations, 2005. Neither accepts the other’s report.

Minerals are a non-Union matter: Cap. 123, the Commission and NEMC are Mainland only. An operation on Unguja or Pemba answers to Zanzibar’s own mining law, with ZEMA on environment and ZRA on indirect tax.

Citizens, contractors and land come before the plan

Cap. 123 reserves a primary mining licence for Tanzanian citizens and companies wholly owned by them. A foreign-owned group cannot absorb a neighbouring PML to tidy its closure footprint, nor hold a residual area once the larger right goes.

Closure is procurement, and mining procurement runs through the local content rules. A foreign demolition, earthmoving or tailings contractor works through a joint venture with an indigenous Tanzanian company and sits on the approved local content plan. Check the current equity threshold with the Commission before signing.

Land is the third restriction. A non-citizen company holds mine land as a derivative right through the Tanzania Investment Centre, not a granted right of occupancy under the Land Act Cap. 113. GN No. 487A of 2025 reserves business classes a caretaker entity may fall into.

What the bond is priced against

The mining environmental-protection regulations require the holder to lodge an environmental performance and rehabilitation bond with the Commission before operations begin, in a form it accepts, usually a bank guarantee, sometimes an insurance bond or cash deposit. No percentage and no shilling amount is published. The number comes from the plan’s own costing.

Three consequences follow. The estimate must be in current money, so a bond set against a feasibility study written years before first ore is the commonest reason an application goes back. The guarantee carries a fixed term and is renewed on the bank’s calendar, not the mine’s. And it secures the state’s cost, not yours: what the Commission would pay a contractor to finish the job.

Four ways a mine stops, and what each leaves running

Care and maintenance is the row operators misread. Halting production halts neither the rent, the audit cycle nor the security; two years without a reporting budget leaves an unfillable gap.

The order the desks take it

1. Re-cost the approved plan first, so the bond conversation opens on current money.
2. Write to the Mining Commission with the cessation date, the status you are applying for, and the revised costing.
3. Notify NEMC of the intention to decommission and appoint a registered expert to run the audit.
4. Serve retrenchment notices on the recognised union and the Labour Commissioner, and consult, before anyone is given a date.
5. Execute the physical works: shaft and pit safety, tailings capping, demolition, magazine and chemical clearance, revegetation, against the approved scope.
6. Close the land and utility files: surrender the occupancy or derivative right, discharge the water permits, hand back what the village agreement returns.
7. Close the tax file with TRA (final return, refund position, clearance), then take the company to BRELA.
8. Apply for the closure certificate and release of the security, attaching the audit and inspection record.

The papers the closure file is built from

Name them before you hunt for them: the mineral right and its conditions; the environmental certificate and approved management plan; the closure plan with its costing; the bond instrument and the Commission’s acknowledgement of lodgement; every annual audit report; the decommissioning audit by a NEMC-registered expert; the survey plan of voids, shafts and beacons; tailings design and water-balance records; the magazine and radioactive source registers; chemical disposal records; abstraction and discharge permits; the employee register and any collective agreement; the occupancy or derivative right with the TISEZA certificate; and audited accounts.

Inspection runs against the plan, not a narrative. A report that cannot be tied to the approved scope goes back.

Illustrative arithmetic: costing a small closure

Illustrative arithmetic, not a quotation. Take an approved estimate of TZS 4,800,000,000: pit and shaft safety TZS 1,900,000,000, tailings capping and revegetation TZS 1,600,000,000, plant and camp demolition TZS 700,000,000, post-closure monitoring TZS 600,000,000.

The demolition package alone carries tax. At the VAT Act Cap. 148 standard rate of 18%, TZS 700,000,000 of contractor services adds TZS 126,000,000, invoicing at TZS 826,000,000. Withholding on a service fee to a resident contractor is 5% under the Income Tax Act Cap. 332: TZS 35,000,000; a non-resident is 15%, or TZS 105,000,000.

Then the people. One hundred and twenty employees on an average basic wage of TZS 900,000 a month, on a thirty-day month, gives a daily basic wage of TZS 30,000. Severance under the Employment and Labour Relations Act Cap. 366 is seven days’ basic wage for each completed year of continuous service, to a maximum of ten years: TZS 210,000 a year, TZS 1,680,000 for eight completed years, TZS 201,600,000 across the group. Twenty-eight days’ notice in lieu adds TZS 108,000,000, so the labour line lands near TZS 310,000,000 before terminal leave and transport home.

The closure year is still a tax year

Production stopping does not stop filing. Provisional instalments remain due on the last day of the third, sixth, ninth and twelfth months of the year of income; the return follows within six months of the year end, revenue or none; and corporation tax at 30% bites on whatever the year produced. Those rows sit in Cap. 332. Confirm the live schedule on tra.go.tz.

Two items change shape. Input VAT on demolition and consultancy no longer meets output tax once sales stop, so it becomes a refund claim needing an auditor’s certificate of genuineness under Cap. 148: calendar time closure budgets rarely allow for. And a rehabilitation provision is not a deduction: Cap. 332 works through an approved rehabilitation fund.

Residual stockpiles sold during closure are still production. Cap. 123 sets royalty on metallic minerals at 6% of gross value, with a 1% inspection fee on minerals presented for export. Service levy of 0.3% of turnover under the Local Government Finance Act Cap. 290 is assessed by the district council, which keeps billing last year’s figure until told production stopped.

People, land and water after the last shift

Closure terminates employment for operational requirements, which Cap. 366 treats as a process rather than an announcement: notice of intention to retrench, disclosure of reasons, numbers, selection criteria and timing, consultation with the recognised union, notification to the Labour Commissioner. Individual letters come last. A closure that pays handsomely but skips consultation still produces complaints at the Commission for Mediation and Arbitration.

Handing land back is a transaction, not a letter. A granted right of occupancy is surrendered to the Commissioner for Lands, a derivative right at TIC; until surrender is registered, land rent accrues against a company that believes it left. On village land under the Village Land Act Cap. 114, the village council and district are parties to what returns.

Water permits are separate again. Abstraction and discharge permits from the Basin Water Board run until surrendered, and a tailings facility with an unmanaged water balance is the liability most likely to pull a decommissioned site back into inspection.

Where this file stalls

• A bond lodged against a feasibility estimate nobody re-costed, met by a regulator that will not act on stale numbers
• A bank guarantee that expired at renewal, which the Commission reads as no security
• A decommissioning audit signed by a consultant not registered with NEMC
• Audits skipped during care and maintenance, leaving a hole in the record certification rests on
• Scope changed on site with the contractor instead of by approved variation
• Notices served before the Labour Commissioner was told and the union consulted
• Land treated as returned because the site was vacated, while rent accrues on an unsurrendered occupancy
• Directors resigning before certification, leaving nobody to sign

Mandate-holders this file does not replace

The Mining Commission owns the mineral right, the plan, the bond and the certificate. NEMC and the Minister responsible for environment own the environmental certificate and the decommissioning audit. The Basin Water Board owns abstraction and discharge; OSHA the demolition workplace; TAEC radioactive sources; the Government Chemist industrial chemicals. The Labour Commissioner and the CMA own the retrenchment. TRA owns the final return, the refund and the clearance, with ZRA on the islands. The Commissioner for Lands, TIC and the village council own the land, and BRELA owns what becomes of the company under the Companies Act Cap. 212.

One holder sits above them. The Written Laws (Miscellaneous Amendments) Act No. 7 of 2017 gave the Government a non-dilutable free carried interest of not less than 16% in a company holding a special mining licence, so stopping is decided with the state on the register. Zatra prepares, structures and coordinates across these desks; it does not issue approvals, practise law, audit or certify rehabilitation works, and no decision at any of them is guaranteed.

What to confirm before you act

• The assessment basis applied to your bond now, and the current cost of the plan
• The expiry date on the guarantee, and who at the bank renews it
• That your environmental expert is registered with NEMC for the class of audit needed
• Whether you are asking for suspension, relinquishment or surrender: three applications, three consequences
• The monitoring period, and which entity funds it once the site team disbands
• That every land and water instrument is surrendered on the register, not merely vacated
• The rehabilitation-fund treatment with TRA before any provision is booked