By Elena Vasquez

Korea's memory giants have agreed to accept ASML's price increase for spare parts and maintenance services, according to a DigiTimes report — and that leaves TSMC as the last big customer without a deal.

For anyone tracking lithography costs, this matters. ASML is the sole supplier of EUV machines, which means every advanced fab on the planet depends on the Dutch company for uptime. When the only game in town raises parts prices, customers don't have a negotiating lever in the classic sense. They have relationship management instead.

Why does this matter for chipmakers?

Memory makers run their fabs at brutal utilization rates. A downed scanner doesn't just idle one tool — it throttles the bit output that DRAM and NAND pricing depends on. Accepting higher parts costs is essentially an insurance premium: pay more per component, keep the machines running, protect the shipment number.

That calculus is different for Samsung and SK Hynix than for a foundry. Memory is a commodity business where cost per bit decides who survives the cycle. Swallowing an unspecified increase on maintenance eats directly into margins that are already cyclical.

The report doesn't put a number on the hike, so treat any percentage you see elsewhere with suspicion. What we know is the outcome: the Korean side has folded, and the question has moved to Hsinchu.

What's different about TSMC's position?

TSMC buys more EUV tools than anyone. If the parts increase applies across its installed base, the annual bill scales with fleet size — a per-tool cost that looks small becomes a line item measured across dozens of high-end systems.

The foundry also has a different cost structure. It passes process costs into wafer pricing for Apple, Nvidia, AMD and the rest. In theory, that gives TSMC more room to absorb an increase. In practice, customers negotiate those wafer prices hard, so nobody in Hsinchu treats rising supplier costs as free money.

TSMC's silence so far is the open question the report flags. No acceptance, no rejection — just a customer base watching what the world's most important equipment vendor can extract from its biggest buyer.

What's the wider signal?

When the sole EUV supplier raises parts prices and its memory customers comply, that tells you where bargaining power sits in the tool chain. Expect other fab operators to read the Korean outcome as a benchmark.

For procurement teams, the practical takeaway is simple: budget assumptions for maintenance on EUV fleets built before this shift may already be stale. Whether TSMC fights, delays, or follows the Koreans will set the reference price everyone else faces.