Fiscal metering, traceability and royalty auditing at the Salar del Hombre Muerto (Catamarca)
The boundary between Salta and Catamarca at the Salar del Hombre Muerto has been undefined since 1943, and in 2021 the governors solved the problem in the simplest possible way: splitting 50 and 50 the royalties, the provincial taxes and every other levy on whatever is extracted from the disputed strip. In January 2026 the two legislatures gave it bodies: an interprovincial authority of three representatives per province for Sal de Oro and a management committee with a tax subcommittee for Diablillos, with tax officials from both sides seated at the same table. Only one thing is missing, and it is the one that decides everything: the number. Catamarca's royalty law orders collection on the physical volume extracted at the mine mouth and gives the State the power to verify it — but there is no method agreed between the two provinces, no specialized provider in either of them, and the mass the two provinces split each year —royalties, Turnover tax and stamp tax on both sides— is of the same order as all of Catamarca's mining collections.
The TAM is activity, not capturable loot. Here the captive share takes a form seen in no other niche: it is captured by the State itself. The subcommittee overseeing the split is made up of the two provincial tax authorities, and the metering instrument is bought by the EPC inside the plant's capex. Your real gap is what neither of them can do: being the independent third party that measures, seals and certifies a number both provinces accept — plus all the royalty settlement work of the province's other four operations, which does not depend on this agreement.
The driver of this niche is a double act of State: Catamarca's Mining Royalties Law 4757 sets the base at the physical volume extracted at the mine mouth, requires declaring it every month and empowers the tax authority to verify it with a fine of up to 100%; and the Salta-Catamarca agreement over the disputed Hombre Muerto strip duplicates that control, because the same volume and the same deductions now have to be accepted by two tax administrations that share no standard. The ones below open in the reforms panel on the home page, with their status and primary source.
enablesSalta and Catamarca split 50/50 what is extracted from the disputed strip, without settling the borderThe Sáenz-Jalil agreement of May 2021 and the January 2026 laws split 50/50 between Salta and Catamarca the royalties, the provincial taxes and every other levy on what is extracted from the disputed strip, and create the bodies that oversee it: an interprovincial authority of three representatives per province for Sal de Oro (technical, mining-environmental and mining police control) and a permanent management committee with environmental, technical, administrative and tax subcommittees for Diablillos, plus tax subcommittees made up of both provinces' tax authorities. It enables the niche because it duplicates the auditor without creating the method. And it carries its own switch: the ninth clause says that «once the boundary dispute is resolved by an Act of the National Congress, this agreement shall become void», with the winning province as sole authority. Watch the scope: the text of the agreements is not published (Catamarca's Law 5940 approves them but does not transcribe the annex) and the phrase going around about «metering devices at the plant» does not appear in any of the four sources we opened.see the reform →enablesRe.P.E.M.: Catamarca's mining local-content rule is a resolution, not a lawThe Re.P.E.M. (Resolution S.E.M. 498/2014) is both the door and the filter: it requires legal domicile in Catamarca with 2 years of seniority, 50% local partners, 70% of the professional, technical and administrative payroll from Catamarca with 2 years of residence and a semi-annual sworn statement. In this line the requirement bites where it hurts most —a metrologist or a mining tax specialist with two years of provincial residence barely exists in a province of 429,562 inhabitants whose salar department has 2,022— which is why the realistic entry route is the joint venture with at least 50% local suppliers that the regime itself admits, with the precedent of a Catamarca firm inside a USD 130 M EPC.see the reform →This market does not float on its own: concrete megaprojects drive it. These are the ones moving demand for this niche — each with its investment and status.
Second stage of POSCO's Sal de Oro lithium complex in the Salar del Hombre Muerto (Salta/Catamarca): it adds a ~23,000 t/year lithium-carbonate plant…
see the project →Gold and silver mining in the puna, on the Salta/Catamarca border area: feasibility development, a 3.15 Mt/yr processing plant and full infrastructure…
see the project →Expansion (Phase 1B) of the historic Fénix lithium-carbonate project in the Salar del Hombre Muerto, operated by Rio Tinto via Minera del Altiplano…
see the project →Lithium brine project in the Salar del Hombre Muerto (western zone), to produce 12,000 t/yr of lithium carbonate equivalent…
see the project →Stage 2 of Tres Quebradas: doubles capacity by adding 40,000 t/year of new output (all stages combined target 60,000-80,000 tpa, projected)…
see the project →Who splits the market, where you get in, what pays and what could break it.
already in
split
It installs and operates the instruments, builds the mass balance and signs the monthly sworn return. It is the AUDITED party: structurally inadmissible as arbiter. Its instrumentation is not 'fiscal metering' until someone independent seals it. It is a client, not a competitor.
The most dangerous competitor is the public budget: the subcommittee is made up of the two provincial tax authorities (three converging sources), and art. 14 of Law 4757 already gives them the power to verify the physical volume. If they do it in-house, there is no purchase line.
The only real and credible incumbent in sampling, weighing and umpire assaying. OAA accreditations LE187 (Maipú, Mendoza) and LE273 (Palpalá, Jujuy — lithium in brines by ICP-OES), with Catamarca listed as an office WITHOUT any stated specialization or accreditation verif. The OAA scope is BY SITE: today it cannot lend its accreditation to Catamarca. It is the same incumbent that dominates the brine laboratory.
They argue the valuation of the base and the defence of deductions, but NONE has a specialized office in Catamarca or metrological capability: they can fight over the value, not measure the flow. The share is a stated assumption and is not used to size the TAM.
INTI is the national authority on legal metrology, but which instruments in this chain require type approval or periodic verification under Law 19,511 (SIMELA) is still unconfirmed against the rule, which is why no claim on that point is used as a lever for this niche unconf. WHAT DID stay verified is the geography, and it is the useful half of the datum: across the open registry of INTI's 332 laboratories, Catamarca has ZERO verif 28-07-2026. Of the agency's 30 Metrology laboratories, none is in the province and none in the NOA except one: the Industrial Metrology Laboratory of La Banda, Santiago del Estero -- more than 600 km from the Catamarca capital and more than 1,000 from the Salar del Hombre Muerto. The rest are concentrated in Santa Fe, Córdoba, Buenos Aires, Chubut and San Luis. The metrological traceability that the fiscal chain needs is not nearby: it is imported from another region, or it is not done.
ZERO categories for metrology, fiscal instrumentation, mining tax auditing or traceability software among the 19 categories and 123 memberships verif against the UNCA 2023 Investor Manual. The closest: professional services 7, electrical services 3, satellite monitoring 2, environmental services 4, insurance and guarantees 1. And only 12 suppliers in Antofagasta de la Sierra, the department of the salar (2,022 inhabitants).
Who occupies the slot today, AND FROM WHERE. NET Calibraciones S.A. (CUIT 30-71110771-8) appears in the supplier registry of CAMYEN, the Catamarca State mining company, and is the only accredited calibration lab we could document serving the province. It is NOT from Catamarca and cannot be for Re.P.E.M. purposes: the OAA registry domiciles it at Av. Liniers 1856, Tigre, province of Buenos Aires, and its accredited scope LC-050 is, verbatim, "Calibration of torque tools type I and type II" -- torque wrenches, not flow or density or brine mass verif 28-07-2026 against the OAA registry, with a matching CUIT. It serves to size the gap, not to fill it. THE count that matters, over the full OAA registry: there are 29 accredited calibration laboratories in force across the whole of Argentina and they live in THREE provinces -- Buenos Aires 21, Santa Fe 7, Mendoza 1. ZERO in Catamarca, zero in the whole NOA verif. Added to INTI's 0 laboratories in the province, that is two independent national registries saying the same thing: the metrological traceability chain that a fiscal measurement needs in order to be enforceable does not have a single accredited link within ~1,000 km of the salar. That is the gap, and it is now proven by registry rather than assumed.
Do not start by fighting for the instrument against the EPC that already bought it, or for the auditing against two tax agencies that can do it with their own staff. The gap is not a missing capability: it is a combination nobody has — being independent before two tax authorities, being traceable and accredited, and being able to work at 4,000 metres:
Write the standard before selling the service, with zero capital. Neither the agreement nor the published laws say what is measured, where, with what uncertainty, who seals it and how a discrepancy is resolved between the two provinces. Arriving with the technical draft of the fiscal metering protocol and of the arbiter's independence rule occupies an empty space — and defines the tender specification the service is later bought under.
Sell to the operator, not to the State. Whoever extracts from the strip needs a single number that both provinces accept and today has nobody to certify it: monthly reconciliation of the physical volume, defensible valuation of the base, an auditable file in two jurisdictions and a defence against an ex officio assessment where the fine reaches 100% of the royalty. Ticket USD 40,000-150,000 per client per year, with no equipment. It is the first invoice.
With proven execution, integrate the metrological leg via a joint venture — the provincial regime admits it with at least 50% local partners and the precedent is proven in a USD 130 M EPC with a Catamarca firm inside. There you bid the complete package and set up a calibration laboratory in Catamarca serving the whole industry of the province, not just mining: it is the only thing in this niche that remains when the lithium price falls.
~USD 1.0 M/year (~55-65% of the TAM): (a) the instrumentation the operator already buys and integrates as part of the control capex —at Sal de Oro and Diablillos the flow meter and the weighbridge are supplied by the EPC, not by a third party—; (b) the enforcement the two tax agencies do with their own staff, at zero market price (the tax subcommittee is made up of the tax authorities themselves prob); (c) the royalty advisory resolved at head office or at a Buenos Aires Big-4; (d) the umpire work and assaying that Alex Stewart captures from Mendoza or Palpalá, where it already has the OAA scope accredited by site. NOTE: HMW's 95.34% and Fénix 1B's 60% do NOT automatically enlarge this SAM — they are commitments on the investment amount directed to suppliers, and in the national RIGI 'local supplier' means ARGENTINE, not from Catamarca (art. 176 subs. l Law 27,742 + art. 49 Decree 749/2024, a 20% minimum) verif; besides, neither project is inside the biprovincial perimeter.
~USD 0.35-1.4 M/year addressable by a local/domestic entrant (midpoint ~USD 0.8 M/year): (1) the entire auditing, valuation and technical assistance component, because the arbiter can be neither the audited party nor the public auditor who later issues the ex officio assessment; (2) the biprovincial settlement software, where there is no specific local or international offering; (3) traceable calibration and verification, which demands recurring physical presence and today has no provider in the province; (4) the low half of implementation (fiscal-point engineering, sealing and file, separable from the supply of the instrument); (5) ALL of the adjacent layer (royalty returns for the other four operations, pond inventory certification, 3% vs 5% classification), which does not depend on the interprovincial agreement and therefore SURVIVES its extinction. That asymmetry dictates the sequence: build from the adjacent layer toward the core, never the other way round.
USD 0.15-0.45 M/year recurring for ONE entrant within 2-3 years (midpoint ~USD 0.3 M/year), plus the implementation peak, which is contingent and counted separately. Year 1: 2-3 reconciliation and valuation clients + the draft technical protocol → USD 0.15-0.35 M. Year 2: annual calibration programme at 2-3 sites + pond inventory certification → +USD 0.1-0.25 M. Year 3: the implementation of ONE complete fiscal point (USD 0.35-1.10 M one-off) or the settlement system → the peak year. Honest ceiling: with 12-20 qualified jobs at stake, this niche does NOT sustain a stand-alone company — it is a high-margin module bolted onto an existing practice (a tax firm, a laboratory, an instrumentation integrator) or the anchor of a 4-8 person technical consultancy.
When you get paid, and what blocks it
effect
With the same rigour as the risk: this is 12-20 jobs, not 200 — it is the smallest niche in employment of the whole Catamarca pass and anyone selling it as a mass job creator is lying. What it does have is the best qualification-to-capital ratio in the chain and a peculiarity no other line on the salar has: IT IS city employment, NOT CAMP EMPLOYMENT. Sal de Vida's primary source documents a regime of '5 days on / 2 off, 40 hours a week, applicable solely to the staff of the Catamarca city office', against the site's 14x14 of 9.5 hours at 4,100 masl verif: an office with campaigns, with no uprooting and no 7x7 rotation, in a province where mining pays 2.8x the private-sector average (ARS 4,496,304 vs ARS 1,612,706 as a 12-month average, OEDE-SIPA) verif.Trades with a concrete, short route: instrumentation and control technician (verification of electromagnetic and Coriolis flow meters, 4-20 mA loops, weighbridge verification with standard weights, instrument sealing — months of training on an electromechanical technician base); metrology technician (standards, uncertainty calculation, managing an ISO/IEC 17025 scope: it is the trade that does not exist today in the province and the one that enables everything else); lot sampler/inspector with chain of custody (the only role requiring physical presence at the salar's fiscal point: 2-6 jobs that CAN be from Antofagasta de la Sierra, where there are 2,022 inhabitants and 12 registered suppliers — it is the part of this niche that reaches the puna); laboratory analyst with ICP-OES and atomic absorption, with an existing talent pool (UNCA produces chemists and chemical engineers, and Minera Cordillera Litio / Arex Mining set up a laboratory in the province with 40 people, 89% local staff and two areas led by local chemical engineers prob — proof that the team can be built here); data analyst/developer for the traceability system; and an accountant or tax lawyer specialized in mining (two profiles imported from Buenos Aires today).The linkage that remains: an accredited calibration laboratory in Catamarca serves more than lithium — it serves every commercial scale, fuel dispenser, weighbridge and meter in a province of 429,562 inhabitants; it is the only piece that, once installed, leaves permanent capability independent of the carbonate price. And the written standard (the biprovincial fiscal metering protocol) is a public asset: if it is written well, every future supplier works better.The three limits, stated in full: (1) these are professional, urban jobs that do NOT reach the resident of Antofagasta de la Sierra except through the 2-6 sampling roles; (2) all the employment depends on the function being BOUGHT rather than done in-house, and that is not decided; (3) if Congress settles the boundary, half of these jobs disappear along with the agreement.
calculate it
Concentration The market is not concentrated: IT IS NOT BOUGHT. There is no dominant supplier to displace; there is a function executed internally, with no standard and at zero market cost. A single international name (Alex Stewart) monopolizes the credible technical leg —umpire work and assaying, with OAA accreditation by site in Mendoza and Jujuy and nothing stated in Catamarca—, no player covers the three competencies the service demands at once (independence admissible before two tax authorities + accredited traceability + operation at 4,000 masl), and the natural buyer can self-supply with public staff. Across 229 active suppliers in the Re.P.E.M. there is not a single local competitor in this line. The competitive risk is not an incumbent: it is the status quo.
The obvious name —«the tax authority»— is the one that pays latest and worst. In fiscal metering the money flows through three different channels, and it pays to enter through the one that does not depend on a public budget:
Whoever produces in the disputed strip needs a single number that Salta and Catamarca both accept, and the royalty law puts the risk on them: the base is the physical volume extracted at the mine mouth, settlement is by monthly sworn return and the fine for not filing it reaches 100% of the royalty. Today there is nobody to certify it independently.
The instrument comes in with the works: at Sal de Oro and at Diablillos it is bought and integrated by the plant contractor inside the control capex. An entrant wanting that slice sells to the EPC, and its differentiator is not the hardware (imported) but the fiscal-point engineering, the traceable sealing and a file admissible before two jurisdictions.
It is the door with the most prestige and the least urgency: the subcommittee is made up of employees of the two tax authorities, so it can be done in-house at zero market cost. It only opens once the bylaws of the interprovincial authority are issued — and whoever got there first with the technical draft of the protocol is the one who defines that specification.
It is not «what breaks it»: it is the dashboard for entering at the right moment. Here the indicator is neither a price nor an FID: it is an administrative act that can open the market or close it for good.
The bylaws of the authority of three representatives per province are the document that says whether the split is controlled with measurements and instruments —and then there is a market— or with paperwork between two tax offices —and then there is only advisory work—. The same dashboard watches the other end: the ninth clause of the agreement says that once Congress settles the boundary, the agreement becomes void and the winning province becomes the sole authority. One act opens the niche; the other switches it off.
The Official Gazettes of Catamarca and Salta (bylaws of the interprovincial authority and the law ratifying the Sal de Oro agreement, not located) + the National Congress (any bill on the boundary), by event ↗Quoted text: 'Once the boundary dispute is resolved by an Act of the National Congress, this agreement shall become void...', and the winning province becomes the sole authority prob. BINARY timing, at any moment: it is an act of Congress, not a gradual process (82 years without resolution since the National Territory of Los Andes was dissolved in 1943 suggest a low near-term probability). It erases the ENTIRE biprovincial core (USD 0.5-2.0 M/year): with no two jurisdictions, no arbiter is needed. It does NOT erase the adjacent layer, because the monthly sworn return under art. 7 of Law 4757 remains alive. It is both the killer and the reason for urgency.
The most likely and most immediate killer. The interprovincial tax subcommittee is made up of tax officials from both provinces (three converging sources, Jan 10/12/14, 2026) and art. 14 of Law 4757 already gives them the power to verify the physical volume: a purchase line may never be created. It erases 60-80% of the auditing and all of the software on the State side. Structural mitigation: sell to the OPERATOR, which needs a number both provinces accept.
The main analytical risk in this niche. 'Metering devices at the plant' does NOT appear in any of the four sources open today (El Tribuno, Minería y Desarrollo, Poder Local, Club Minero) and the annex to the agreement is not published (Law 5940 approves it but does not transcribe it). If reconciliation ends up being documentary between two tax offices, implementation, calibration and umpire work disappear (45-55% of the core) and only advisory remains. Structural, already present; it cannot be resolved without opening the annex to the agreement.
The TAM is a percentage of the fiscal mass: it is LINEAR with price. Q2-2026 spot averaged USD 22,043/t (+13% quarter on quarter) but closed the quarter at USD 19,400/t, and Rio Tinto's realized price in H1-2026 was USD 18,960/t verif. A 30% fall in price cuts ~30% of the niche without any other variable changing. Continuous exposure.
Sal de Oro's CP2 was announced 'within the next two weeks' on Jul 21, 2026 and there is no confirmation as of Jul 25; the Diablillos plant is NOT built; and neither Tres Quebradas 2nd stage nor Sal de Oro Phase 2 has a published RIGI resolution as of Jul 25, 2026 verif the absence in the official RIGI portal spreadsheet. If Diablillos slips to 2029-2030, the core stays in today's band (USD 0.3-1.1 M/year) for three more years. Timing 12-36 months.
Salta publishes Sal de Oro as a SALTA project and mentions neither Catamarca nor the royalty split verif Feb 18, 2026; the hydroxide plant is in General Güemes; the nearest OAA accreditation for lithium in brines is in Palpalá, Jujuy; and the salar's service companies are based in Salta and Mendoza, none in Catamarca verif. The supplier will be from Salta or Mendoza unless a registered Catamarca vehicle exists. It is the only killer an entrant CAN neutralize, and only by moving now (2026-2027, at contracting time).
The Catamarca Court of Justice lifted 5-2 the injunction over the Río Los Patos sub-basin with CONTINUOUS MONITORING conditions, on a 2021 amparo action by Román Guitián (Atacameños del Altiplano community) with a filing pending before the IACHR prob. If production stops, the fiscal mass stops. Stated double edge: the same ruling CREATES demand for continuous measurement and reporting. Continuous exposure.
Implementation (35-40% of the TAM) is ONE-OFF and concentrated in 2026-2030. The perpetual core —annual calibration, monthly volume reconciliation, base auditing, pond inventory certification— is USD 0.6-2.0 M/year and does not end while the plants operate (mine lives of 25 to 40 years). An entrant should charge for the peak and keep the retainer; whoever sizes the organization for the peak goes bust in 2031.
The TAM is built from three variables you can watch: how many fiscal points are covered, what an integrated retainer per plant is worth and how much rent is at stake (which is the ceiling: nobody spends more on measuring than what is being split). Change one and the number is recalculated.
A robustness check by three routes —and our own audit says that none of the three validates the bottom-up, so the number rests on the method and not on them—: (a) by risk, an assurance programme costs 2-8% of the rent it protects → USD 0.3-2.8 M/year for the core, and the bottom-up gives 0.5-2.0: it falls inside, but the band is 9.3× as wide and any result would fall inside; (b) top-down, 5-6 plants × USD 0.25-0.70 M of retainer = USD 1.3-4.2 M/year, which falls ABOVE the published range; (c) by headcount, the midpoint equals ~13-18 full-time equivalent professionals for the whole province, but the price per professional is an input of the calculation itself, so dividing and getting the head-count back is an identity, not a verification. What does stand: this is a niche of 12-20 qualified jobs, not of a hundred million.
The number rests on a few variables. The formula shows how it moves when each one changes; and each variable carries its freshness seal — how often it is worth revisiting. estim
Every figure is checked against its source before we publish it. Here we show what backs it — and where the verified data ends and our estimate begins.
The anchor is not a projection: it is the law. We opened the text in force of Catamarca's Mining Royalties Law 4757 and read the six articles that create the obligation to measure: the base is the physical volume extracted at the mine mouth (art. 5), settlement is by monthly sworn return (art. 7), the fine for not filing it reaches 100% of the royalty (art. 11), transport requires a Mineral Transit Permit (art. 12) and the authority may demand the documentation for the verification of the physical volume extracted (art. 14). We then measured the mass at stake with ARCAT's official collection series and with the carbonate price published by the largest operator. And we say what we could not confirm: the text of the agreements between the two provinces is not published —the law approving them is, the annex is not—, so the phrase going around about «metering devices at the plant» is one we did not find in any of the four sources we opened. The annual total is our own estimate: we multiply covered plants by service price and cross-check it against the size of the rent it protects.
10registered sources8official or agencies8of high reliabilityEvery data point on the site links to its source.
Get on board the takeoff
This week’s updates: the map of fiscal metering, traceability and royalty auditing at the Salar del Hombre Muerto (Catamarca) and the niches opening up, related courses and new provinces as they launch. Free.