StockData
Lam Research Corp logo

Lam Research Corp (LRCX) operating KPIs

LRCXNasdaqSpecial Industry Machinery, NECFiscal year ends June 27
Financials through Q4 FY2026, quarter ended Jun 28, 2026Last filing: 10-Q on Oct 22, 2026Score 21/3065% above fair value
$239.11−15.28 (-6.01%)

Close on Oct 30, 2026Market cap $299.20BP/E 41.5Yield 0.43%

Lam Research gAAP effective income tax rate (%)

Form 10-Q / 10-K Note (Income Taxes)

QuarterlyAnnual
Latest, Q1 FY27
16.9%
Period ended Sep 27, 2026
Change on a year earlier
+1.3 pts
15.6% in Q1 FY26
History
32 quarters
Since Q3 FY16
Sources
29
Documents cited below

Quarterly history

Hover a value to see the sentence it was read from; calculated values show their formula

PeriodEndedGAAP effective income tax rate (%)Year on yearSource
Q1 FY27Sep 27, 202616.9%+1.3 ptsLam Research Form 10-Q (filed 2026-10-22) ↗
Q3 FY26Mar 29, 20269.3%-4.1 ptsLam Research Form 10-Q (filed 2026-04-23) ↗
Q2 FY26Dec 27, 202513.2%+1.5 ptsLam Research Form 10-Q (filed 2026-01-29) ↗
Q1 FY26Sep 27, 202515.6%+1.9 ptsLam Research Form 10-Q (filed 2026-10-22) ↗
Q3 FY25Mar 29, 202513.4%+1.7 ptsLam Research Form 10-Q (filed 2026-04-23) ↗
Q2 FY25Dec 27, 202411.7%-0.5 ptsLam Research Form 10-Q (filed 2026-01-29) ↗
Q1 FY25Sep 27, 202413.7%+0.2 ptsLam Research Form 10-Q (filed 2025-10-24) ↗
Q3 FY24Mar 29, 202411.7%-1.6 ptsLam Research Form 10-Q (filed 2025-04-25) ↗
Q2 FY24Dec 27, 202312.2%+1.1 ptsLam Research Form 10-Q (filed 2025-01-31) ↗
Q1 FY24Sep 27, 202313.5%-0.3 ptsLam Research Form 10-Q (filed 2024-10-28) ↗
Q3 FY23Mar 29, 202313.3%+3.3 ptsLam Research Form 10-Q (filed 2024-04-29) ↗
Q2 FY23Dec 27, 202211.1%-0.8 ptsLam Research Form 10-Q (filed 2024-01-29) ↗
Q1 FY23Sep 27, 202213.8%+1.6 ptsLam Research Form 10-Q (filed 2023-10-23) ↗
Q3 FY22Mar 29, 202210.0%+2.3 ptsLam Research Form 10-Q (filed 2023-04-24) ↗
Q2 FY22Dec 27, 202111.9%+0.6 ptsLam Research Form 10-Q (filed 2023-01-30) ↗
Q1 FY22Sep 27, 202112.2%+1.5 ptsLam Research Form 10-Q (filed 2022-10-24) ↗

Cite this data

StockData. (2026). Lam Research GAAP effective income tax rate (%), quarterly Q3 FY16–Q1 FY27 [Data set]. Compiled from Lam Research SEC filings and investor materials. https://stockdatahq.com/stocks/lrcx/kpis/effective-tax-rate

See every metric in the Lam Research KPI table. Data updated Oct 25, 2026.