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Prothena Corp Public (PRTA) Tax Rate: 2017-2024

Historic Tax Rate for Prothena Corp Public (PRTA) over the last 7 years, with Dec 2024 value amounting to 5.13%.

  • Prothena Corp Public's Tax Rate fell 31.00% to 1.08% in Q3 2025 from the same period last year, while for Mar 2025 it was 4.83%, marking a year-over-year decrease of 206.00%. This contributed to the annual value of 5.13% for FY2024, which is 325.00% down from last year.
  • As of FY2024, Prothena Corp Public's Tax Rate stood at 5.13%, which was down 38.75% from 8.38% recorded in FY2023.
  • In the past 5 years, Prothena Corp Public's Tax Rate ranged from a high of 8.38% in FY2023 and a low of 0.25% during FY2020.
  • Its 3-year average for Tax Rate is 6.80%, with a median of 6.89% in 2022.
  • As far as peak fluctuations go, Prothena Corp Public's Tax Rate spiked by 662bps in 2021, and later slumped by 325bps in 2024.
  • Yearly analysis of 5 years shows Prothena Corp Public's Tax Rate stood at 0.25% in 2020, then soared by 662bps to 6.88% in 2021, then climbed by 1bps to 6.89% in 2022, then skyrocketed by 149bps to 8.38% in 2023, then crashed by 325bps to 5.13% in 2024.