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Monolithic Power Systems, Inc.

MPWRNasdaqSemiconductors & Related DevicesFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 5, 2026Score 18/3074% above fair value
$1243.95+32.32 (+2.67%)

Close on Nov 2, 2026Market cap $61.13BP/E 76.0Yield 0.50%

Monolithic Power Systems Non-GAAP Effective Tax Rate by Quarter

Non-GAAP Effective Tax Rate (%)

Monolithic Power Systems Non-GAAP Effective Tax Rate: 15.0% in Q3 2026, unchanged from a year earlier. That is the highest of the 11 quarters on record here.

Latest, Q3 2026
15.0%
Period ended Sep 30, 2026
Change on a year earlier
0.0 pts
15.0% in Q3 2025
History
11 quarters
Since Q1 2024
Sources
1
Documents cited below

Where the Q3 2026 figure comes from

Reported in SEC Form 8-K Earnings Commentary Summary Table.

Quarterly history

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

PeriodEndedNon-GAAP Effective Tax Rate (%)Year on yearSource
Q3 2026Sep 30, 202615.0%0.0 pts–
Q2 2026Jun 30, 202615.0%0.0 pts–
Q1 2026Mar 31, 202615.0%0.0 pts–
Q4 2025Dec 31, 202515.0%+2.5 pts–
Q3 2025Sep 30, 202515.0%+2.5 pts–
Q2 2025Jun 30, 202515.0%+2.5 pts–
Q1 2025Mar 31, 202515.0%+2.5 pts–
Q4 2024Dec 31, 202412.5%––
Q3 2024Sep 30, 202412.5%––
Q2 2024Jun 30, 202412.5%––
Q1 2024Mar 31, 202412.5%––

Cite this data

StockData. (2026). Monolithic Power Systems Non-GAAP Effective Tax Rate (%), quarterly Q1 2024–Q3 2026 [Data set]. Compiled from Monolithic Power Systems SEC filings and investor materials. https://stockdatahq.com/stocks/mpwr/kpis/ng-tax-rate

See every metric in the Monolithic Power Systems KPI table. Data updated Nov 2, 2026.