X4 Pharmaceuticals (XFOR) Tax Rate (2020 - 2025)

X4 Pharmaceuticals' Tax Rate history runs 6 years deep, the most recent figure standing at 0.1% for Q3 2025.

• Quarterly Tax Rate rose 14.0% year-over-year to 0.1% in Q3 2025, while the trailing twelve-month figure through Dec 2025 was 0.05% (up 78.0% YoY) and the FY2025 annual result came in at 0.05%, up 78.0% from the prior year.
• Tax Rate was 0.1% for Q3 2025 at X4 Pharmaceuticals, up from 0.14% in the prior quarter.
• Across five years, Tax Rate topped out at 10.76% in Q1 2025 and bottomed at 1.14% in Q3 2023.
• A 5-year average of 0.44% and a median of 0.03% in 2021 frame the typical range for Tax Rate.
• Annual changes were most pronounced in 2023 — Tax Rate plunged 120 bps — and 2025, when it surged 1080 bps.
• X4 Pharmaceuticals' Tax Rate stood at 0.01% in 2021, then sank by 385 bps to 0.05% in 2022, then tumbled by 259 bps to 0.17% in 2023, then slumped by 277 bps to 0.65% in 2024, then jumped by 115 bps to 0.1% in 2025.
• Business Quant data shows XFOR's Tax Rate at 0.1% in Q3 2025, 0.14% in Q2 2025, and 10.76% in Q1 2025.