Alector (ALEC) Tax Rate (2021 - 2026)

Alector's (ALEC) quarterly Tax Rate came in at 0.57% in Q2 2026, down 100.7% quarter-over-quarter from 80.81% in Q4 2025.

Analysis

Alector (ALEC) Tax Rate (2021 - 2026) Analysis & Trends

Alector (ALEC) has reported Tax Rate for 6 consecutive years, with 0.57% the latest figure, recorded in Q2 2026.

On a quarterly basis, Tax Rate changed N/A year-over-year to 0.57% in Q2 2026; TTM through Jun 2026 was 25.39%, a 365.0% increase from a year earlier, with the FY2025 full-year figure at 21.0%, changed 0.0% from the prior year.
Tax Rate was 0.57% for Q2 2026 at Alector, down from 80.81% in the prior quarter.
Over five years, Tax Rate peaked at 1236.87% in Q4 2024 and troughed at 2.9% in Q3 2023.
A 5-year average of 115.45% and a median of 0.02% in 2024 frame the typical range for Tax Rate.
Across the five-year window, Tax Rate soared 116210 bps in 2024 and tumbled 115606 bps in 2025, its largest moves.
Over 5 years, Tax Rate stood at 57.51% in 2022, then soared by 30 bps to 74.77% in 2023, then surged by 1554 bps to 1236.87% in 2024, then sank by 93 bps to 80.81% in 2025, then tumbled by 101 bps to 0.57% in 2026.
The last three Tax Rate figures came in at 0.57% (Q2 2026), 80.81% (Q4 2025), and 1236.87% (Q4 2024), per Business Quant data.

Peer Set

#	Company	Market Cap	Enterprise Value	Gross Profit (Qtr)	Tax Rate (Qtr)
1	Amgen	236.37 Bn	222.38 Bn	7.24 Bn	14.20%
2	Gilead Sciences	187.38 Bn	184.12 Bn	6.22 Bn	-2.36%
3	Vertex Pharmaceuticals	138.36 Bn	130.51 Bn	2.84 Bn	20.98%
4	Regeneron Pharmaceuticals	85.09 Bn	77.10 Bn	3.93 Bn	15.11%
5	Argenx Se	63.93 Bn	58.75 Bn	1.37 Bn	-10.89%
6	Moderna	58.07 Bn	52.94 Bn	52.00 Mn	-1.96%
7	Alnylam Pharmaceuticals	35.59 Bn	32.28 Bn	992.69 Mn	7.49%
8	Biogen	32.63 Bn	31.34 Bn	1.96 Bn	26.36%
9	Insmed	27.57 Bn	26.41 Bn	358.27 Mn	-16.71%
10	Alector	274.68 Mn	101.88 Mn	-	-0.57%

Historic Data

Download Data