CSGQF (Costain Group) Tax Rate %: 23.00% (As of Dec. 2025)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

CSGQF Costain Group PLC CSGQF
58 GF Score
Price $1.38
GF Value $0.50
! 5 Warning Signs
View Full Analysis

What is Costain Group Tax Rate %?

Costain Group CSGQF 58 Tax Rate % is 23.00% as of Dec. 2025. GuruFocus rates CSGQF with a GF Score™ of 58/100 and a GF Value™ of $0.50. The stock has 5 warning signs investors should review.

Tax Rate % is calculated as Tax Expense divided by its Pre-Tax Income. Costain Group's Tax Expense for the six months ended in Dec. 2025 was $9 Mil. Costain Group's Pre-Tax Income for the six months ended in Dec. 2025 was $40 Mil. Therefore, Costain Group's Tax Rate % for the quarter that ended in Dec. 2025 was 23.00%.


Costain Group Tax Rate % Related Terms


Costain Group Tax Rate % Historical Data

* Premium members only.

The historical data trend for Costain Group'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.

Costain Group Tax Rate % Chart

Costain Group Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Tax Rate %
Get a 7-Day Free Trial Premium Member Only Premium Member Only 56.39 21.04 28.48 16.16 22.61

Costain Group Semi-Annual Data
Jun16 Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
Tax Rate % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 24.11 20.59 12.31 21.98 23.00
CSGQF
58GF Score
Costain Group PLC CSGQF
Tax Rate % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Costain Group Tax Rate % Calculation

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

Costain Group's Tax Rate % for the fiscal year that ended in Dec. 2025 is calculated as

Tax Rate %=Tax Expense (A: Dec. 2025 )/Pre-Tax Income (A: Dec. 2025 )
=14.592/64.525
=22.61 %

Costain Group's Tax Rate % for the quarter that ended in Dec. 2025 is calculated as

Tax Rate %=Tax Expense (Q: Dec. 2025 )/Pre-Tax Income (Q: Dec. 2025 )
=9.237/40.161
=23.00 %

* 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.

Frequently Asked Questions Learn more about Tax Rate % →
What does a Tax Rate % of 23.00% mean?
Costain Group (CSGQF) has a Tax Rate % of 23.00% as of Dec. 2025.
Is Costain Group's Tax Rate % too high?
Costain Group's current Tax Rate % is 23.00%. Overall, Costain Group has a GF Score™ of 58/100, reflecting its overall financial health beyond just this single metric.
How does Costain Group's Tax Rate % compare to PWR and FIX?
Costain Group's Tax Rate % of 23.00% can be compared against companies in the Construction 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 a Construction company?
A good Tax Rate % depends on the Construction 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. Costain Group's current Tax Rate % is 23.00%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Costain Group stock overvalued right now?
Costain Group (CSGQF) has a current Tax Rate % of 23.00%. The stock's GF Value™ is $0.50, compared to a current price of $1.38 — trading 175% above its estimated fair value. The current Tax Rate % is 23.00%. Costain Group's overall GF Score™ is 58/100 with 5 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 Costain Group (CSGQF), the current Tax Rate % is 23.00% as of Dec. 2025. 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 Costain Group (CSGQF) Overvalued in 2026?

Based on GuruFocus' analysis, Costain Group stock appears to be overvalued. The current stock price of $1.38 is trading 175% above its estimated GF Value™ of $0.50.

Key valuation signals for CSGQF:

  • Tax Rate %: 23.00%
  • GF Value™: $0.50 vs. price of $1.38 (175% above fair value)
  • GF Score™: 58/100 with 5 warning signs

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


Costain Group Business Description

Other Exchanges COSTl:UKCOST:UK
Address 70 Saint Mary Axe, Seventh Floor, London, GBR, EC3A 8BE
Costain Group PLC offers solutions and services. It provides engineering and technology solutions and advisory and development, design, management, project delivery, technology integration and asset optimization and support services to highways, nuclear, oil and gas, power, water sectors, rail. The company has two segments Transportation and Natural resources. The transportation segment covers highways, rail, and nuclear markets and the Natural resources segment comprises of water, power and oil and gas markets. Majority of revenue is from Transportation Segment.
58GF Score

Get the complete analysis for CSGQF

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

$1.38
Price
$0.50
GF Value