⚠ Service Under Export RulesModerate threat

KLA (KLAC) — threat to the moat

KLA expected 30% of the 2025 export-rule impact to fall on service, because the rules reach tools already installed in China.

American export rules reach KLA's installed base, not just its new sales. When the December 2024 curbs were announced, KLA expected roughly $500 million of incremental impact on 2025 revenue, about 70% on systems and 30% on service, according to TrendForce1.

KLA expected split of the 2025 export-rule impact (%)Systems — 70%Service — 30%TrendForce, December 2024, on a roughly $500 million expected impact
Service carries almost a third of the hit.

China matters to the fleet because it has bought so many tools. China was 42.8% of KLA's revenue in fiscal 2024 and 29.8% in fiscal 20262; those shipments are now tools that need servicing under whatever rules apply.

The 10-K warns that "there can be no assurance that export licenses applied for" will be granted3. A service contract in China depends on licences as much as on the customer.

The rules accumulate rather than replace each other. The 10-K lists the 2022 rules, the rules Commerce issued in October 2023 and a redefinition of advanced DRAM among those that apply4. Each adds products or customers that need a licence, and service parts for a restricted fab fall under the same regime.

The newest rule is suspended, not withdrawn. The 10-K describes an interim final rule from September 2025, which Commerce labelled the Affiliates Rule, extending licence requirements to entities 50% or more owned by listed parties; BIS suspended it in November 2025 for one year, until November 20265. If it returns, more Chinese fabs will need licences, and so will servicing their tools.

Management played down the latest step. On the March 2026 call finance chief Bren Higgins said the impact of the new BIS letter was "fairly immaterial" and "focused on not all affiliated fabs"6.

The feared damage has not yet shown in the totals: service revenue rose 16% in fiscal 20267. A year in which China revenue fell while total service revenue grew more slowly than 10% would suggest the rules had reached the fleet.

References
  1. ReportedWhen the December 2024 curbs were announced, KLA expected roughly $500 million of incremental impact on 2025 revenue, about 70% on systems and 30% on service, according to TrendForce.
    TrendForce - KLA expected roughly a USD 500 million incremental impact on 2025 revenue from the December 2024 export curbs, about 70% systems and 30% service, and China revenue to fall about 20% in 2025. — December 2024 · publ. 10 December 2024 · source ↗
  2. ReportedChina was 42.8% of KLA's revenue in fiscal 2024 and 29.8% in fiscal 2026; those shipments are now tools that need servicing under whatever rules apply.
    KLA Corporation Form 10-K for fiscal 2026 (year ended 30 June 2026) - Item 7 MD&A and revenue notes: revenue by product category and region, gross margin and research spending. — FY2026 · publ. 6 August 2026 · source ↗
  3. ReportedThe 10-K warns that "there can be no assurance that export licenses applied for" will be granted.
    KLA Corporation Form 10-K for fiscal 2026 (year ended 30 June 2026) - Item 1A risk factors: export controls, tariffs, suppliers, leverage and cyclicality. — FY2026 · publ. 6 August 2026 · source ↗
  4. ReportedThe 10-K lists the 2022 rules, the rules Commerce issued in October 2023 and a redefinition of advanced DRAM among those that apply.
    KLA Corporation Form 10-K for fiscal 2026 (year ended 30 June 2026) - Item 1 business: products, history, competitors, customers and employees. — FY2026 · publ. 6 August 2026 · source ↗
  5. ReportedThe 10-K describes an interim final rule from September 2025, which Commerce labelled the Affiliates Rule, extending licence requirements to entities 50% or more owned by listed parties; BIS suspended it in November 2025 for one year, until November 2026.
    KLA Corporation Form 10-K for fiscal 2026 (year ended 30 June 2026) - Item 1A risk factors: export controls, tariffs, suppliers, leverage and cyclicality. — FY2026 · publ. 6 August 2026 · source ↗
  6. ReportedOn the March 2026 call finance chief Bren Higgins said the impact of the new BIS letter was "fairly immaterial" and "focused on not all affiliated fabs".
    The Motley Fool, KLA Q3 fiscal 2026 earnings call transcript - process control share, advanced packaging, the 2030 financial model, capital allocation, China and memory; per-share figures before the split - process control share, advanced packaging, China, memory and margins. — Q3 FY2026 · publ. 29 April 2026 · source ↗
  7. ReportedThe feared damage has not yet shown in the totals: service revenue rose 16% in fiscal 2026.
    KLA Corporation Form 10-K for fiscal 2026 (year ended 30 June 2026) - Item 7 MD&A and revenue notes: revenue by product category and region, gross margin and research spending. — FY2026 · publ. 6 August 2026 · source ↗
Sources
Generated September 28, 2026