Ribbon Communications (RBBN) Tax Rate (2017 - 2026)

Ribbon Communications has disclosed Tax Rate across 10 years of filings, most recently posting 15.75% for Q1 2026.

• Tax Rate for Q1 2026 came in at 15.75%, up 1279.0% year-over-year; the trailing twelve-month figure through Mar 2026 was 6.51% (up 3876.0% YoY), and the FY2025 annual result was 0.97%, up 5536.0% from the prior year.
• Tax Rate came in at 15.75% for Q1 2026 at Ribbon Communications, up from 2.78% in the prior quarter.
• In the past five years, Tax Rate ranged from a high of 230.26% in Q4 2024 to a low of 51.58% in Q3 2023.
• The 5-year median for Tax Rate is 12.6% (2024), against an average of 3.64%.
• Across the five-year window, Tax Rate surged 23559 bps in 2024 and tumbled 23304 bps in 2025, its largest moves.
• Ribbon Communications' Tax Rate stood at 34.33% in 2022, then soared by 84 bps to 5.33% in 2023, then soared by 4417 bps to 230.26% in 2024, then sank by 101 bps to 2.78% in 2025, then jumped by 666 bps to 15.75% in 2026.
• The last three Tax Rate figures came in at 15.75% (Q1 2026), 2.78% (Q4 2025), and 34.89% (Q3 2025), per Business Quant data.