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Consolidated Net IncomeEBITEBITDAEBTEPS (Basic)EPS (Weighted Average and Diluted)Gross ProfitIncome from Continuing OperationsIncome towards Parent CompanyInterest & Investment IncomeInterest ExpensesNet Income towards Common StockholdersNon Operating IncomeNon Operating Investment IncomeOperating ExpensesOperating IncomeOther Non Operating IncomeOther Operating ExpensesProfit After TaxResearch & DevelopmentRevenueSelling, General & AdministrativeShares OutstandingShares Outstanding (Diluted Average)Shares Outstanding (Weighted Average)Tax ProvisionsTax Rate
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Ionis Pharmaceuticals (IONS) Tax Rate (2016 - 2025)

Ionis Pharmaceuticals (IONS) has 16 years of Tax Rate data on record, last reported at 0.65% in Q4 2025.

  • For Q4 2025, Tax Rate fell 313.0% year-over-year to 0.65%; the TTM value through Dec 2025 reached 0.47%, down 181.0%, while the annual FY2025 figure was 0.47%, 181.0% down from the prior year.
  • Tax Rate reached 0.65% in Q4 2025 per IONS's latest filing, down from 0.17% in the prior quarter.
  • Across five years, Tax Rate topped out at 2.51% in Q3 2024 and bottomed at 18.36% in Q4 2022.
  • Average Tax Rate over 5 years is 2.04%, with a median of 0.14% recorded in 2025.
  • Peak YoY movement for Tax Rate: tumbled -23215bps in 2021, then skyrocketed 2032bps in 2023.
  • A 5-year view of Tax Rate shows it stood at 0.14% in 2021, then crashed by -13505bps to 18.36% in 2022, then soared by 111bps to 1.96% in 2023, then rose by 26bps to 2.48% in 2024, then crashed by -126bps to 0.65% in 2025.
  • Per Business Quant database, its latest 3 readings for Tax Rate were 0.65% in Q4 2025, 0.17% in Q3 2025, and 0.02% in Q2 2025.