Top U.S. business groups are urging Congress to extend and expand the federal semiconductor tax credit, arguing in a joint appeal that the incentive has proven effective at pulling advanced manufacturing investment into the United States and should not be allowed to lapse.

The Semiconductor Industry Association (SIA), the Washington-based trade body whose members account for the large majority of U.S. semiconductor revenue, is spearheading the push. The coalition's letter to Congress calls for two things: extending the credit beyond its current window, and broadening its scope so that more of the semiconductor supply chain — not just front-end fabrication — can qualify.

The credit in question is the advanced manufacturing investment credit created under the CHIPS and Science Act framework, commonly known as the FABS Act provision. It provides a 25 percent investment tax credit for companies building semiconductor manufacturing facilities and equipment in the United States. Crucially, it applies not only to chipmakers themselves but also to firms that supply manufacturing equipment, which the business groups view as central to the policy's effectiveness.

The coalition's core argument is straightforward: the credit works. Since Congress passed the CHIPS incentives, semiconductor manufacturers have announced a wave of new U.S. projects spanning leading-edge logic, memory, mature-node capacity and advanced packaging. The signatories contend that the tax credit was a decisive factor in those siting decisions and that other governments continue to offer aggressive incentives of their own, meaning the competitive race for fab investment is far from over.

Timing is central to the appeal. Companies that began construction in the early wave of CHIPS-era projects are now moving into a second phase of expansion, and new entrants are deciding where to place capacity that will come online in the late 2020s and beyond. If the credit expires or stays narrow, the groups warn, the United States risks ceding those next rounds of investment to Asia and Europe, where subsidy programs remain open and generously funded.

The expansion ask also reflects how the industry's needs have shifted since the original legislation. Early CHIPS-era spending concentrated on wafer fabrication. Now, executives and policymakers increasingly point to upstream materials, gases, chemicals, and equipment components — plus downstream advanced packaging and assembly — as the bottlenecks in a resilient domestic supply chain. A broader credit base, the business groups argue, would pull investment into those adjacent segments.

Congress has not yet acted on the request, and the letter does not by itself change the commercial picture for any specific fab project. Its significance is political: it signals that a broad cross-section of U.S. industry — not just chipmakers — wants the incentive regime treated as permanent industrial policy rather than a one-time stimulus, and it puts pressure on lawmakers to take up the measure before the current construction deadlines begin to bind.

For semiconductor suppliers and equipment makers, the practical stakes are concrete. A 25 percent credit on qualified capital spending changes the after-tax economics of a multi-billion-dollar fab or tool facility enough to swing location decisions, and an extension would give finance teams confidence to plan U.S. capacity beyond the current eligibility cutoff.

Watch for congressional response in coming months. If lawmakers extend and widen the credit, expect suppliers and packaging specialists to accelerate U.S. investment announcements; if the effort stalls, the competitive pressure from foreign incentive programs will shape where the industry's next capacity dollars land.