Trinseo (TSEOQ) Tax Rate (2013 - 2026)

Trinseo has disclosed Tax Rate across 14 years of filings, most recently posting 8.83% for Q1 2026.

• In Q1 2026, Tax Rate rose 29.0% year-over-year to 8.83%; the TTM figure through Mar 2026 stood at 64.49% (down 5375.0% YoY), while the FY2025 annual figure was 117.36%, down 10692.0% from the prior year.
• Tax Rate declined to 8.83% in Q1 2026, from 10.48% in the prior quarter.
• Over the last five years, Tax Rate for TSEOQ reached as high as 56.93% in Q1 2022 and fell as low as 93.29% in Q4 2023.
• The 5-year median for Tax Rate is 2.43% (2025), against an average of 2.06%.
• Annual changes were most pronounced in 2023 — Tax Rate tumbled 12237 bps — and 2024, when it jumped 8977 bps.
• A 5-year view of Tax Rate shows it stood at 29.08% in 2022, then plunged by 421 bps to 93.29% in 2023, then jumped by 96 bps to 3.52% in 2024, then soared by 398 bps to 10.48% in 2025, then sank by 184 bps to 8.83% in 2026.
• According to Business Quant data, Tax Rate over the past three periods registered 8.83%, 10.48%, and 8.19% for Q1 2026, Q4 2025, and Q3 2025 respectively.