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Consolidated Net IncomeEBITEBITDAEBTEPS (Basic)EPS (Weighted Average and Diluted)Income from Continuing OperationsIncome towards Parent CompanyInterest & Investment IncomeNet Income towards Common StockholdersNon Operating IncomeOperating ExpensesOperating IncomeOther Non Operating IncomeOther Operating ExpensesProfit After TaxResearch & DevelopmentRestructuring CostsRevenueSelling, General & AdministrativeShares Outstanding (Diluted Average)Shares Outstanding (Weighted Average)Tax ProvisionsTax Rate
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Ratios

Spero Therapeutics (SPRO) Tax Rate (2023 - 2025)

Spero Therapeutics' Tax Rate history spans 3 years, with the latest figure at 0.82% for Q4 2025.

  • For Q4 2025, Tax Rate fell 100.0% year-over-year to 0.82%; the TTM value through Dec 2025 reached 2.96%, up 703.0%, while the annual FY2025 figure was 2.96%, N/A changed from the prior year.
  • Tax Rate reached 0.82% in Q4 2025 per SPRO's latest filing, down from 1.82% in the prior quarter.
  • In the past five years, Tax Rate ranged from a high of 1.82% in Q4 2024 to a low of 224.7% in Q3 2023.
  • Average Tax Rate over 3 years is 44.6%, with a median of 0.74% recorded in 2023.
  • Peak YoY movement for Tax Rate: surged 22303bps in 2024, then crashed -100bps in 2025.
  • A 3-year view of Tax Rate shows it stood at 0.74% in 2023, then surged by 148bps to 1.82% in 2024, then tumbled by -55bps to 0.82% in 2025.
  • Per Business Quant, the three most recent readings for SPRO's Tax Rate are 0.82% (Q4 2025), 1.82% (Q4 2024), and 1.67% (Q3 2024).