Nexa Resources (NEXA) Q4 2025 earnings review
Mining Rescues the Bottom Line as Smelting Collapses
Nexa finished 2025 with strong momentum, recording roughly $903M in Q4 revenue (+21.9% YoY) and driving full-year net income to $223.1M—a sharp Reversing trend from 2024's $187.4M loss. However, this headline beat masks a severe internal divergence. The Mining segment, buoyed by surging copper and silver prices, saw Adjusted EBITDA accelerate by 42% YoY. In stark contrast, the Smelting segment's profitability cratered, with EBITDA dropping 55% as global benchmark Treatment Charges (TCs) plummeted to $80/ton. Despite the smelting headwinds, Nexa successfully navigated a massive Q1 working capital deficit, extended its debt maturities to roughly 8 years, and reduced its net leverage ratio to 1.68x.
🐂 Bull Case
The Mining segment continues to deliver, generating $658.3M in FY25 Adjusted EBITDA (+42% YoY) driven by high byproduct prices (copper, silver) and a $91.7M long-lived asset impairment reversal linked to stronger price outlooks.
After severe weather and tailings filter bottlenecks hampered Q1, the flagship Aripuanã mine has steadily improved. The crucial fourth tailings filter is on track for H1 2026 commissioning, which management insists will unlock the full 180,000-ton nameplate capacity.
🐻 Bear Case
Smelting Operating Income plummeted from $140.5M in FY24 to just $15.1M in FY25. With benchmark Treatment Charges plunging 52% YoY to $80/ton, the margin cushion has vanished.
Nexa sits on $362.1M of unprovisioned uncertain tax positions. The ongoing battle with SUNAT over the Cerro Lindo tax stability agreement is forcing the company to pay tens of millions in cash upfront simply to maintain its right to appeal in court.
⚖️ Verdict: ⚪
Cautiously Bullish. The balance sheet is de-risked and the mining segment is a cash machine at current commodity prices. If management can execute the Aripuanã filter installation in early 2026 and global smelter TCs rebound as projected, Nexa is positioned for significant free cash flow generation.
Key Themes
Smelting Segment: A Complete Margin Collapse
Decelerating. Despite Smelting revenue growing 3.0% YoY to $2.05B, the segment's Adjusted EBITDA collapsed 54.6% to $113.3M. Operating margins evaporated to 0.7% from 7.0% last year. Management cited historically depressed benchmark Treatment Charges (TCs) and rising conversion costs as the culprits. The viability of this segment's profitability in 2026 heavily depends on the anticipated TC benchmark recovery to the $130-$180/ton range.
Silver Streaming Step-Down Unlocks Cash
Accelerating. A major catalyst approaches in Q2 2026 when the Cerro Lindo silver streaming agreement steps down its delivery obligation from 65% to 25% of output. Management highlighted that this will return approximately 1.6 million ounces of attributable silver production to Nexa, unlocking $70M-$75M in additional annual cash flow at current elevated silver prices.
Peruvian Tax Disputes Forcing Cash Outlays
Stable but alarming. The company maintains $362.1M in off-balance-sheet contingent tax liabilities. In Q1 2025, Nexa had to pay $42.3M to secure penalty reductions under a tax amnesty program. Furthermore, to appeal recent adverse rulings regarding the 2014-2015 Cerro Lindo tax stability agreement, Nexa expects to pay an additional $67.7M in the first half of 2026. While the company claims these payments do not admit liability, the cash drain is very real.
Aripuanã's Fourth Filter: The Make-or-Break Catalyst
Accelerating. The Aripuanã mine struggled heavily in H1 2025 due to rainfall overwhelming its tailings filters. Management has anchored its recovery narrative entirely on the installation of a fourth tailings filter, scheduled for commissioning in early 2026. If executed on time, this will allow the mine to hit its 180,000-ton capacity by H2 2026, transitioning the asset from a cash drain into a cornerstone producer.
De-Risked Balance Sheet Amidst Working Capital Volatility
Reversing. Nexa experienced a brutal $265M negative working capital outflow in Q1 2025, which briefly spiked leverage to 2.3x. However, the company successfully reversed this by year-end, restoring Free Cash Flow to a positive $13M for FY25. A strategic $500M bond issuance in early 2025 successfully pushed average debt maturities to roughly 8 years, removing near-term refinancing risks.
Other KPIs
Stable. Leverage slightly improved from 1.70x in FY24, despite the massive Q1 working capital drain. Gross debt sits at $1.70B with healthy cash and equivalents of $515.8M, providing ample liquidity ($790M including undrawn facilities) for upcoming capital expenditures.
Reversing. An abrupt shift from a $32.8M loss in 2024. The reversal primarily reflects a $108M gain recognized at the Cerro Pasco Cash Generating Unit (CGU), driven by an improved outlook for short-term and long-term metal prices (zinc and copper).
Decelerating. The company recognized a massive non-cash fair value loss on its copper offtake agreement, compared to a $3.3M loss in 2024. Because Nexa sold the future copper volumes at a price cap in lieu of royalties, soaring global copper prices have drastically increased the mark-to-market liability of these pending deliveries.
Guidance
Accelerating. While 2025 TCs bottomed out at a severely depressed $80/ton (crushing smelting margins), management anticipates the 2026 benchmark will recover substantially. This is essential for the Smelting segment to return to historical profitability levels.
Stable. The deadline for fulfilling the Accreditable Investment Commitment for the Magistral project has been extended to August 2028. However, due to the Peruvian Government rejecting the environmental modification (MEIA), the obligation is currently suspended under force majeure. Failure to resolve this could eventually trigger a $97M penalty.
Key Questions
Smelting Margin Rebound
With the 2026 Treatment Charge benchmark projected to recover to $130-$180/ton, how quickly will older, lower-priced contracts roll off, and what is the exact margin uplift expected for the Smelting segment?
Tax Litigation Cash Outlays
Given the mixed rulings from the Peruvian Tax Court—nullifying 2016-2017 assessments but forcing a ~$67.7M cash payment to appeal 2014-2015—what is the total expected cash drain related to judicial appeals built into your 2026 working capital assumptions?
Aripuanã Workforce Stability
The 4th tailings filter is the physical fix for Aripuanã, but previous calls highlighted workforce turnover rates of 18-20%. What concrete evidence do you have that staffing stability will not become the new bottleneck once the filter is commissioned in H1 2026?
Offtake Price Cap Drag
With the Aripuanã copper offtake agreement driving a $49M non-cash fair value loss due to breached price caps, what is the exact cash opportunity cost per ton Nexa is forfeiting, and when exactly in 2028 does this contract expire?