Ciena (CIEN) Tax Rate (2009 - 2026)

Ciena's Tax Rate history runs 18 years deep, the most recent figure standing at 17.02% for Q1 2026.

• On a quarterly basis, Tax Rate fell 1800.0% year-over-year to 17.02% in Q1 2026; TTM through Jan 2026 was 14.79%, a 1767.0% decrease from a year earlier, with the FY2025 full-year figure at 21.08%, down 887.0% from the prior year.
• Tax Rate grew to 17.02% in Q1 2026 per CIEN's latest filing, from 581.91% in the prior quarter.
• Across five years, Tax Rate topped out at 53.79% in Q3 2023 and bottomed at 581.91% in Q4 2025.
• The 5-year median for Tax Rate is 22.89% (2024), against an average of 13.73%.
• Across the five-year window, Tax Rate soared 9743 bps in 2022 and sank 60480 bps in 2025, its largest moves.
• Year by year, Tax Rate stood at 11.83% in 2022, then plunged by 348 bps to 29.33% in 2023, then jumped by 178 bps to 22.89% in 2024, then slumped by 2642 bps to 581.91% in 2025, then surged by 103 bps to 17.02% in 2026.
• Per Business Quant, the three latest CIEN Tax Rate figures stand at 17.02% (Q1 2026), 581.91% (Q4 2025), and 23.57% (Q3 2025).