Mining an ounce of silver costs most producers between $17 and $22 when you account for all expenses, though individual mines range from nearly $0 to over $25 per ounce depending on geography, ore quality, and what other metals come out of the ground alongside the silver. That all-inclusive figure, known in the industry as the All-In Sustaining Cost (AISC), covers everything from diesel fuel and worker wages to equipment maintenance and environmental compliance.
What “Cost Per Ounce” Actually Measures
Silver miners report costs using two main metrics, and the difference between them matters. Cash cost per ounce captures the direct expenses of pulling ore from the ground, crushing it, and extracting the silver: labor, energy, chemicals, and basic overhead. AISC builds on that number by adding sustaining capital expenditures (the money needed to keep a mine running year after year), corporate overhead, exploration spending near existing mines, and reclamation costs. AISC gives a much more realistic picture of what it truly costs to produce silver over the long term.
Both figures are reported “after by-product credits,” meaning revenue from other metals mined alongside silver (gold, lead, zinc, copper) is subtracted from the cost. This is where things get interesting, because by-product credits can dramatically change the math.
What Major Silver Miners Actually Spend
First Majestic Silver, one of the largest primary silver producers, reported a full-year 2024 AISC of $21.11 per silver equivalent ounce. By Q4 2024, the company had brought that down to $20.34, a 3% improvement over the previous quarter. Its direct cash costs were considerably lower at $13.82 per ounce in Q4, illustrating how much sustaining capital and overhead add to the real cost of production.
Pan American Silver, the world’s largest primary silver miner, reported a full-year 2024 AISC of $18.98 per ounce for its silver segment. The company forecasts that number dropping to between $16.25 and $18.25 per ounce in 2025, partly because infrastructure upgrades at its La Colorada mine in Mexico are expected to reduce costs, and partly because higher gold prices boost the value of by-product credits. Pan American’s quarterly outlook shows significant seasonal variation: Q1 2025 AISC is projected at $21.00 to $22.25 per ounce, falling to just $10.25 to $13.00 by Q4 as mine sequencing reaches higher-grade ore zones.
Hecla Mining operates the two most prominent silver mines in the United States. Its Greens Creek mine in Alaska is a cost outlier in the best possible way, with 2026 AISC guidance of $0.00 to $0.50 per silver ounce. That near-zero figure isn’t magic; Greens Creek produces so much gold, zinc, and lead alongside its silver that by-product credits essentially pay for the entire operation. Hecla’s Lucky Friday mine in Idaho tells a different story: AISC guidance there runs $23.50 to $26.00 per ounce, making it one of the higher-cost operations in the industry.
Why Costs Vary So Dramatically
The gap between a $0.50 AISC at Greens Creek and a $25 AISC at Lucky Friday comes down to a few key factors.
By-product credits are the single biggest variable. A polymetallic mine that produces significant gold, lead, or zinc alongside silver can offset most or all of its operating costs with revenue from those metals. When gold prices rise, silver mines that also produce gold see their effective silver costs drop, even if their actual operating expenses haven’t changed at all. Pan American Silver explicitly noted that higher gold price assumptions for 2025 are a key reason its projected AISC is falling. This also means that silver mining costs are partly tied to fluctuations in completely separate metal markets.
Ore grade, the concentration of silver in each ton of rock, directly affects how much material you need to move and process to get an ounce of silver. A mine with high-grade ore spends less on hauling, crushing, and chemical processing per ounce. Pan American’s seasonal cost swing in 2025 is largely driven by mine sequencing into higher-grade zones later in the year.
Geography and infrastructure play a significant role as well. Mines in remote locations face higher transportation costs for supplies and concentrate shipping. Operations in countries with higher labor costs, stricter environmental regulations, or complex permitting requirements carry those expenses in every ounce they produce. Lucky Friday’s higher AISC partly reflects profit-sharing payments to workers that increase alongside the silver price, a cost structure built into its labor agreements.
Cash Costs vs. the Full Picture
If you hear someone quote a silver mining cost of $10 to $14 per ounce, they’re likely citing cash costs rather than AISC. First Majestic’s cash cost of $13.82 per ounce in Q4 2024 looks manageable, but the full AISC of $20.34 tells you the company needs silver prices well above $20 to sustain its operations long term. Hecla’s Lucky Friday has cash costs of $10.25 to $11.00 per ounce, but its AISC more than doubles that figure.
The difference matters because sustaining capital isn’t optional. Mines need continuous investment in equipment replacement, underground development, tailings management, and safety infrastructure. A mine that only covers its cash costs is slowly eating itself, deferring expenses that will eventually come due.
How Industry Costs Have Shifted
The Silver Institute reported that the average AISC for primary silver mines decreased in the first half of 2024. A slowdown in rising input costs (energy, labor, consumables) combined with higher by-product revenue helped even high-cost producers in the 90th percentile record positive margins. That’s notable because producers at the 90th percentile are the most expensive operations still running, and their profitability signals that silver prices have been comfortably above industry-wide costs.
With silver prices trading in the $28 to $33 range through much of 2024 and into 2025, most primary silver miners are operating with healthy margins above their AISC. The gap between production cost and selling price is wide enough that even the most expensive operations remain viable, which historically encourages new mine development and expansion of existing operations.
What This Means for Silver Prices
Mining costs function as a soft floor for silver prices. If prices were to fall toward the $17 to $22 AISC range where most producers operate, the highest-cost mines would shut down, reducing supply and putting upward pressure on prices. The industry’s current cost structure suggests silver prices below $20 would start forcing mine closures, while prices below $15 would threaten all but the most efficient polymetallic operations.
For investors evaluating silver miners, the AISC relative to the current silver price is the clearest measure of profitability. A company producing silver at an AISC of $18 per ounce while silver trades at $30 keeps roughly $12 per ounce in margin. But that margin can shift quickly if by-product metal prices change, ore grades decline, or energy costs spike, all of which happen regularly in mining.