Analysis
KLA Corporation (KLAC) has identified a material and persistent headwind to its profitability stemming from U.S. tariffs introduced in mid-2025. The impact is primarily centered on the company's service business and global supply chain for parts. Because KLA typically acts as the importer of record for parts used in its extensive service contract network, it bears the direct cost of these duties. This exposure is particularly acute in the Chinese market, where the company faces reciprocal impacts on parts entering the country to support its installed base of equipment.
The company initially estimated a gross margin headwind of approximately 100 basis points (100 bps) per quarter starting in the June 2025 period. Management has consistently characterized this as a 50 to 100 bps impact, noting in early 2026 that the burden remains closer to the high end of that range. This tariff-related cost is distinct from a separate, commodity-driven headwind of 75 to 100 bps caused by escalating DRAM component costs that surfaced in January 2026. Together, these factors have pressured gross margins, which KLA now guides to approximately 62% for calendar year 2026.
To mitigate the financial impact, KLA is re-evaluating its global manufacturing and logistics network, seeking to move parts more efficiently and utilize duty drawback programs for systems and components that "round trip" through the United States. While the company is exploring longer-term pricing adjustments to pass these costs through to customers, its current contract structure for service revenue limits its ability to adjust pricing immediately for its largest recurring revenue stream. Management expects the net headwind from tariffs to gradually diminish throughout 2026 as these operational process changes and mitigation strategies take effect.
Despite the margin pressure, KLA has reported no direct loss of revenue or demand destruction specifically attributed to the tariffs. The company continues to see unprecedented demand for AI infrastructure, leading-edge logic, and high-bandwidth memory (HBM) that has extended its product lead times and pushed deliveries into late 2026 and 2027. The postponement of the company's Investor Day from mid-2025 to March 2026 was a direct response to the trade uncertainty, allowing the company more time to stabilize its operational response to the shifting global trade environment.
Data
($M, except margin data)
| Metric | 4Q25 (Jun) | 1Q26 (Sep) | 2Q26 (Dec) | CY2026E |
|---|---|---|---|---|
| Total Revenue | $3,075 | $3,210 | $3,300 | ~$14,300 |
| Gross Margin Impact (bps) | 100 | 50 – 100 | ~100 | 50 – 100 |
| Estimated Net Tariff Cost | $31 | $16 – $32 | $33 | $70 – $140 |
Source: Transcript 3Q-2025, Transcript 1Q-2026, Transcript 2Q-2026, Marvin Labs
Financial Impact
- Cost Impact (Historic): $96M
- Cost Impact (Forward-Looking): $70M–$140M
Sources
We expect global tariffs to have a roughly 100 basis point headwind to gross margin per quarter, assuming relatively stable quarterly revenue expectations for the remainder of the calendar year.
I talked about a 50-100 basis point impact related to tariffs. We're closer to the top end of that range today, and we'll see that come down, I think, over time.
We have a really strong logistics team. The same team that got us through COVID without missing deliveries... drilled through all this... I do not think it was luck, and we are not guessing. We did a lot of detailed work.