ASML, the world's largest supplier of chipmaking equipment, said on Wednesday that tariffs have increased uncertainty about its outlook for 2025 and 2026.

ASML CEO Christophe Fouquet said his conversations with customers supported ASML's expectations that 2025 and 2026 will be years of growth.

"However, the recently announced tariffs have increased uncertainty in the macro environment," Fouquet said in a statement.

In an internal interview published on the company's website, ASML Chief Financial Officer Roger Dassen divided the tariffs that could affect the company into four categories, including tariffs on U.S. exports, tariffs on imported parts and tools, tariffs on imported materials needed for U.S. manufacturing operations, and tariffs on U.S. exports from other countries.

Dassen also warned that the indirect impact on global economic growth has yet to be quantified. "We are working very actively with the entire ecosystem to minimize the overall impact on the entire ecosystem," he said.

Fouquet said at a quarterly earnings conference on Wednesday that artificial intelligence remains ASML's main growth driver.

"It creates a shift in market dynamics that benefits some customers more than others, which creates both upside potential and downside risk, which is reflected in our revenue range for 2025," he added.

ASML's net orders, the most watched figure in the industry, came in at 3.9 billion euros ($4.4 billion) in the first quarter, below the 4.89 billion euros consensus forecast by analysts surveyed by researcher Visible Alpha.

The company had sales of 7.7 billion euros in the first quarter and expects sales of 7.2 billion to 7.7 billion euros in the second quarter, compared with analysts' expectations of 7.73 billion euros.