Tan Delta SystemsLSE:TAND 25 Pretax Margin % is -115.95% as of Dec. 2025. GuruFocus rates LSE:TAND with a GF Score™ of 25/100 and a GF Value™ of £0.18 (Significantly Overvalued). The stock has 4 warning signs investors should review. Among 921 Oil & Gas companies, Tan Delta Systems ranks worse than 89.36% on this metric.
The historical rank and industry rank for Tan Delta Systems's Pretax Margin % or its related term are showing as below:
LSE:TAND'
s Pretax Margin % Range Over the Past 10 Years
Min: -130.28 Med: -40.05 Max: 17.64
Current: -130.28
LSE:TAND's Pretax Margin % is ranked worse than 89.36% of 921
companies
in the Oil & Gas industry
Industry Median: 5.18
vs LSE:TAND: -130.28
Tan Delta Systems (LSE:TAND) Pretax Margin % Explanation
The pretax margin, as know as pretax profit margin, is widely used to measure the operating efficiency of a company before deducting taxes.
The pretax margin is sometimes preferred over the net margin as tax expenditures can make profitability comparisons between companies misleading.
It is a useful tool to compare companies operating in the same sector and less effective when comparing companies from other sectors as each industry generally has different operating expenses and sales patterns.
The long term trend of the pretax margin is a good indicator of the competitiveness and health of the business.
Tan Delta Systems Pretax Margin % Related Terms
Tan Delta Systems Pretax Margin % Historical Data
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The historical data trend for Tan Delta Systems's Pretax Margin % 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.
LSE:TAND vs SLB, BKR, HAL: Pretax Margin % Comparison
For the Oil & Gas Equipment & Services subindustry, Tan Delta Systems's Pretax Margin %, along with its competitors' market caps and Pretax Margin % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Tan Delta Systems Pretax Margin % vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Tan Delta Systems's Pretax Margin % distribution charts can be found below:
* The bar in red indicates where Tan Delta Systems's Pretax Margin % falls into.
* 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.
Tan Delta Systems (LSE:TAND) has a Pretax Margin % of -115.95% as of Dec. 2025. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on Tan Delta Systems and its competitors. According to the industry distribution chart, Tan Delta Systems ranks #823 out of 921 companies in the Oil & Gas industry, placing it in the top 89.4%.
Is Tan Delta Systems' Pretax Margin % too high?
Tan Delta Systems' current Pretax Margin % is -115.95%. Based on the distribution chart, Tan Delta Systems ranks #823 out of 921 companies in the Oil & Gas industry, which is in the bottom quartile relative to peers. Overall, Tan Delta Systems has a GF Score™ of 25/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Tan Delta Systems' Pretax Margin % compare to SLB and BKR?
According to the Oil & Gas industry distribution chart, Tan Delta Systems ranks #823 out of 921 companies for Pretax Margin %. This places Tan Delta Systems in the lower half of its industry. The industry median Pretax Margin % is 5.18. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Pretax Margin % for an Oil & Gas company?
The median Pretax Margin % among Oil & Gas companies is 5.18, based on 921 companies in the industry. Companies in the top quartile (top 25%) have a Pretax Margin % significantly above this median, while those in the bottom quartile fall well below. However, Pretax Margin % 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 Pretax Margin % mean?
A high Pretax Margin % can signal that a stock is expensive relative to its fundamentals. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on Tan Delta Systems and its competitors. For the Oil & Gas industry, the median Pretax Margin % is 5.18 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Tan Delta Systems's current Pretax Margin % is -115.95%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tan Delta Systems stock overvalued right now?
Based on GuruFocus' analysis, Tan Delta Systems (LSE:TAND) is currently considered Significantly Overvalued. The stock's GF Value™ is £0.18, compared to a current price of £0.28 — trading 55.6% above its estimated fair value. The current Pretax Margin % is -115.95%. Tan Delta Systems' overall GF Score™ is 25/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Pretax Margin % calculated?
Pretax Margin % is calculated from a company's financial statements. For Tan Delta Systems (LSE:TAND), the current Pretax Margin % is -115.95% 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 Tan Delta Systems (LSE:TAND) Overvalued in 2026?
Based on GuruFocus' analysis, Tan Delta Systems stock appears to be overvalued.
The current stock price of £0.28 is trading 55.6% above its estimated GF Value™ of £0.18.
GuruFocus considers Tan Delta Systems to be Significantly Overvalued.
Key valuation signals for LSE:TAND:
Pretax Margin %: -115.95%
GF Value™: £0.18 vs. price of £0.28 (55.6% above fair value)
No single metric tells the full story. See the LSE:TAND stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Tan Delta Systems PLC develops real-time oil analysis and analytic technologies and products with capabilities that enable equipment operators to significantly reduce operating costs, improve efficiency, and reduce carbon footprint. It develops all its core technologies and products in-house, with manufacturing undertaken by its carefully selected manufacturing partners with whom its dedicated production QA department works. Its products include Sensors, Kits, Display solutions, Gateways & modems, and Accessories & services. Geographically, its solutions are in use across the UK, Europe, North and South America, Asia, and the Middle East.
25GF Score
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