IDKOF (Idemitsu Kosan Co) Tax Rate %: 26.25% (As of Mar. 2026)

What is Idemitsu Kosan Co Tax Rate %?

Idemitsu Kosan Co IDKOF 64 Tax Rate % is 26.25% as of Mar. 2026. GuruFocus rates IDKOF with a GF Score™ of 64/100 and a GF Value™ of $6.73 (Modestly Overvalued). The stock has 4 warning signs investors should review.

Tax Rate % is calculated as Tax Expense divided by its Pre-Tax Income. Idemitsu Kosan Co's Tax Expense for the three months ended in Mar. 2026 was $261 Mil. Idemitsu Kosan Co's Pre-Tax Income for the three months ended in Mar. 2026 was $995 Mil. Therefore, Idemitsu Kosan Co's Tax Rate % for the quarter that ended in Mar. 2026 was 26.25%.

Idemitsu Kosan Co Tax Rate % Related Terms

Idemitsu Kosan Co Tax Rate % Historical Data

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The historical data trend for Idemitsu Kosan Co's Tax Rate % can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Idemitsu Kosan Co Tax Rate % Chart

Idemitsu Kosan Co Annual Data

Trend

Mar17

Mar18

Mar19

Mar20

Mar21

Mar22

Mar23

Mar24

Mar25

Mar26

Tax Rate %

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28.67

27.99

30.58

35.58

25.68

Idemitsu Kosan Co Quarterly Data
	Jun21	Sep21	Dec21	Mar22	Jun22	Sep22	Dec22	Mar23	Jun23	Sep23	Dec23	Mar24	Jun24	Sep24	Dec24	Mar25	Jun25	Sep25	Dec25	Mar26
Tax Rate %	Get a 7-Day Free Trial															-183.04	200.88	33.59	41.51	26.25

64GF Score

Idemitsu Kosan Co Ltd IDKOF

Tax Rate % is just one metric. See GF Score™, valuation, warning signs, and more.

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Idemitsu Kosan Co Tax Rate % Calculation

Tax Rate % is the ratio of tax expense divided by pretax income, usually presented in percent.

Idemitsu Kosan Co's Tax Rate % for the fiscal year that ended in Mar. 2026 is calculated as

Tax Rate %	=	Tax Expense (A: Mar. 2026 )	/	Pre-Tax Income (A: Mar. 2026 )
	=	359.428	/	1399.875
	=	25.68 %

Idemitsu Kosan Co's Tax Rate % for the quarter that ended in Mar. 2026 is calculated as

Tax Rate %	=	Tax Expense (Q: Mar. 2026 )	/	Pre-Tax Income (Q: Mar. 2026 )
	=	261.182	/	994.941
	=	26.25 %

Frequently Asked Questions Learn more about Tax Rate % →

What does a Tax Rate % of 26.25% mean?

Idemitsu Kosan Co (IDKOF) has a Tax Rate % of 26.25% as of Mar. 2026.

Is Idemitsu Kosan Co's Tax Rate % too high?

Idemitsu Kosan Co's current Tax Rate % is 26.25%. Overall, Idemitsu Kosan Co has a GF Score™ of 64/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.

How does Idemitsu Kosan Co's Tax Rate % compare to VLO and MPC?

Idemitsu Kosan Co's Tax Rate % of 26.25% can be compared against companies in the Oil & Gas industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.

What is a good Tax Rate % for an Oil & Gas company?

A good Tax Rate % depends on the Oil & Gas industry context. However, Tax Rate % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.

What does a high Tax Rate % mean?

A high Tax Rate % can signal that a stock is expensive relative to its fundamentals. Idemitsu Kosan Co's current Tax Rate % is 26.25%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.

Is Idemitsu Kosan Co stock overvalued right now?

Based on GuruFocus' analysis, Idemitsu Kosan Co (IDKOF) is currently considered Modestly Overvalued. The stock's GF Value™ is $6.73, compared to a current price of $7.50 — trading 11.4% above its estimated fair value. The current Tax Rate % is 26.25%. Idemitsu Kosan Co's overall GF Score™ is 64/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.

How is Tax Rate % calculated?

Tax Rate % is calculated from a company's financial statements. For Idemitsu Kosan Co (IDKOF), the current Tax Rate % is 26.25% as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Idemitsu Kosan Co (IDKOF) Overvalued in 2026?

Based on GuruFocus' analysis, Idemitsu Kosan Co stock appears to be overvalued. The current stock price of $7.50 is trading 11.4% above its estimated GF Value™ of $6.73. GuruFocus considers Idemitsu Kosan Co to be Modestly Overvalued.

Key valuation signals for IDKOF:

Tax Rate %: 26.25%
GF Value™: $6.73 vs. price of $7.50 (11.4% above fair value)
GF Score™: 64/100 with 4 warning signs

No single metric tells the full story. See the IDKOF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Idemitsu Kosan Co Business Description

Industry Energy Oil & Gas

Comparable Companies TSE:8097 TSE:8131 TSE:8037 TSE:8132 TSE:5015 TSE:7486 TSE:6239 TSE:416A TSE:5010 TSE:7462 NSE:RELIANCE VLO MPC PSX XKAZ:KMGZ OHEL:NESTE NSE:IOC TSE:5020 TPE:6505 BOM:500547

Other Exchanges IDKOY:USA 5019:Japan I7B:Germany

Address 1-2-1 Otemachi, Chiyoda-ku, Tokyo, JPN, 100-8321

Website https://www.idemitsu.com

Idemitsu Kosan Co Ltd engages in a variety of activities globally that include petroleum products, oil exploration and production, coal, and other businesses. The company operates through five segments. The Basic Chemicals segment makes and sells olefins and aroma products. Electricity/Renewable Energy covers thermal, solar, and wind power generation, electricity sales, and solar business. Fuel Oil handles production, trading, and import/export of refined petroleum. The Highly Functional Materials segment includes lubricants, chemicals, electronic materials, paving materials, and agri-bio. The Resource segment explores, develops, and sells crude oil, natural gas, and coal. Others cover insurance and intra-group services. It generates the majority of its revenue from the Fuel oil segment.

64GF Score

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Tax Rate % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$7.50

Price

$6.73

GF Value

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