Balance Sheet
Cash Flow Statement
Daily Values
Growth Metrics
Income Statement
Consolidated Net IncomeEBITEBITDAEBTEPS (Basic)EPS (Weighted Average and Diluted)Income from Continuing OperationsIncome towards Parent CompanyNet Income towards Common StockholdersNon Operating IncomeOperating ExpensesOperating IncomeOther Non Operating IncomeOther Operating ExpensesProfit After TaxResearch & DevelopmentRevenueSelling, General & AdministrativeShares Outstanding (Diluted Average)Shares Outstanding (Weighted Average)Tax ProvisionsTax Rate
Others
Ratios

Prothena Corp Public (PRTA) Tax Rate (2016 - 2025)

Prothena Corp Public has reported Tax Rate over the past 14 years, most recently at 0.17% for Q4 2025.

  • Quarterly results put Tax Rate at 0.17% for Q4 2025, down 238.0% from a year ago — trailing twelve months through Dec 2025 was 21.49% (down 2658.0% YoY), and the annual figure for FY2025 was 21.54%, down 2668.0%.
  • Tax Rate for Q4 2025 was 0.17% at Prothena Corp Public, down from 1.08% in the prior quarter.
  • Over the last five years, Tax Rate for PRTA hit a ceiling of 7.3% in Q2 2023 and a floor of 89.81% in Q4 2022.
  • Median Tax Rate over the past 5 years was 1.21% (2024), compared with a mean of 6.89%.
  • Biggest five-year swings in Tax Rate: plummeted -8967bps in 2022 and later soared 9427bps in 2023.
  • Prothena Corp Public's Tax Rate stood at 0.14% in 2021, then tumbled by -64513bps to 89.81% in 2022, then skyrocketed by 105bps to 4.46% in 2023, then plummeted by -43bps to 2.55% in 2024, then plummeted by -93bps to 0.17% in 2025.
  • The last three reported values for Tax Rate were 0.17% (Q4 2025), 1.08% (Q3 2025), and 55.33% (Q2 2025) per Business Quant data.