VRTX · 10-Q · 2026Q3 · Full report

Income Tax Rate Changes

VERTEX PHARMACEUTICALS INC / MA · 2026-11-03 · Importance 30 · Surprise 40

Vertex's effective tax rate was 18.8% for the first nine months of 2026, below the U.S. statutory rate.,A research and development tax credit study completed in the third quarter of 2026 and excess tax benefits from stock-based compensation reduced the 2026 effective tax rate.,The comparable first-nine-month 2025 effective tax rate was 16.6%, also below the U.S. statutory rate, due to an R&D tax credit study, stock-based compensation tax benefits and greater foreign tax credit utilization, partly offset by uncertain tax-position changes.

Key facts

• Vertex’s effective tax rate was 18.8% in the first nine months of 2026, below the U.S. statutory rate primarily because of a benefit from an R&D tax credit study completed in the third quarter of 2026 and excess stock-based compensation tax benefits. source