SW · 10-Q · 2026Q3 · Full report

Income Tax Rate Changes

Smurfit Westrock plc · 2026-11-04 · Importance 35 · Surprise 48

The nine-month effective tax rate increased to 29.7% in 2026 from 23.3% in 2025, a 6.4 percentage-point increase. Despite the higher rate, nine-month income tax expense decreased to $156 million from $183 million. In the third quarter, the effective tax rate rose to 30.3% from 27.1%, while tax expense increased to $95 million from $91 million. The filing directs readers to Note 11 for the primary factors affecting the effective tax rates.

Key facts

• Income tax expense was $95 million and the effective tax rate was 30.3% in the three months ended September 30, 2026, compared with tax expense of $91 million and an effective tax rate of 27.1% in the prior-year quarter. source
• Income tax expense was $156 million and the effective tax rate was 29.7% in the nine months ended September 30, 2026, compared with tax expense of $183 million and an effective tax rate of 23.3% in the prior-year period. source