Formosa PetrochemicalTPE:6505 -0.36%89 Pretax Margin % is 4.67% as of Dec. 2025, which is 10% below its 10-year median of 5.21. GuruFocus rates TPE:6505 with a GF Score™ of 89/100 and a GF Value™ of NT$57.62 (Fairly Valued). The stock has 3 warning signs investors should review. Among 919 Oil & Gas companies, Formosa Petrochemical ranks worse than 60.61% on this metric.
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.
Formosa Petrochemical Pretax Margin % Related Terms
Formosa Petrochemical Pretax Margin % Historical Data
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The historical data trend for Formosa Petrochemical'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.
TPE:6505 vs VLO, MPC, PSX: Pretax Margin % Comparison
For the Oil & Gas Refining & Marketing subindustry, Formosa Petrochemical'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.
Formosa Petrochemical Pretax Margin % vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Formosa Petrochemical's Pretax Margin % distribution charts can be found below:
* The bar in red indicates where Formosa Petrochemical'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.
Formosa Petrochemical (TPE:6505) has a Pretax Margin % of 4.67% as of Dec. 2025. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on Formosa Petrochemical and its competitors. This is 10% below median its historical median of 5.21. Over the past decade, Formosa Petrochemical's Pretax Margin % has ranged from 0.99 to 16.60. According to the industry distribution chart, Formosa Petrochemical ranks #557 out of 919 companies in the Oil & Gas industry, placing it in the top 60.6%.
Is Formosa Petrochemical's Pretax Margin % too high?
Formosa Petrochemical's current Pretax Margin % of 4.67% is 10% below median its 10-year median of 5.21. Over the past 10 years, this metric has ranged from a low of 0.99 to a high of 16.60. The Oil & Gas industry median Pretax Margin % is 5.15. Formosa Petrochemical's value of 4.67% is 9.3% below this industry median. Based on the distribution chart, Formosa Petrochemical ranks #557 out of 919 companies in the Oil & Gas industry, which is below the industry midpoint. Overall, Formosa Petrochemical has a GF Score™ of 89/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Formosa Petrochemical's Pretax Margin % compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Formosa Petrochemical ranks #557 out of 919 companies for Pretax Margin %. This places Formosa Petrochemical in the lower half of its industry. The industry median Pretax Margin % is 5.15. Formosa Petrochemical's value of 4.67% is 9.3% below this benchmark. Historically, Formosa Petrochemical's own Pretax Margin % has ranged from 0.99 to 16.60 over the past decade. While the company's 10-year median is 5.21 vs. the industry median of 5.15, Formosa Petrochemical has consistently been below the industry average. 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 5.15, based on 919 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. Formosa Petrochemical's current Pretax Margin % of 4.67% is 9.3% below the industry median. 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 Formosa Petrochemical and its competitors. For the Oil & Gas industry, the median Pretax Margin % is 5.15 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Formosa Petrochemical's current Pretax Margin % is 4.67%, which is 10% below median its own 10-year median of 5.21. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Formosa Petrochemical stock overvalued right now?
Based on GuruFocus' analysis, Formosa Petrochemical (TPE:6505) is currently considered Fairly Valued. The stock's GF Value™ is NT$57.62, compared to a current price of NT$55.10 — trading 4.4% below its estimated fair value. The current Pretax Margin % is 4.67%, which is 10% below median its 10-year median of 5.21 and 9.3% below the Oil & Gas industry median of 5.15. Formosa Petrochemical's overall GF Score™ is 89/100 with 3 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 Formosa Petrochemical (TPE:6505), the current Pretax Margin % is 4.67% 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 Formosa Petrochemical (TPE:6505) Overvalued in 2026?
Based on GuruFocus' analysis, Formosa Petrochemical stock appears to be undervalued.
The current stock price of NT$55.10 is trading 4.4% below its estimated GF Value™ of NT$57.62.
GuruFocus considers Formosa Petrochemical to be Fairly Valued.
Key valuation signals for TPE:6505:
Pretax Margin %: 4.67% (10% below median its 10-year median of 5.21)
GF Value™: NT$57.62 vs. price of NT$55.10 (4.4% below fair value)
Industry Position: 9.3% below the Oil & Gas median (#557 of 919)
No single metric tells the full story. See the TPE:6505 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Formosa Petrochemical Corp engages in the Operation of refinery of petroleum and integrated manufacture of hydrocarbon. The firm operates in two segments. The Petrochemical segment that derives majority revenue engages in producing and selling petroleum, and petrochemical products. The Public utility segment engages in producing and selling water, electricity, and steam. Its product offerings comprise gasoline, jet fuel, kerosene, fuel oil, asphalt, sulfur, lubricant, diesel, naphtha, and liquid petroleum gas.
89GF Score
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