WLK (Westlake) Interest Expense: $-188 Mil (TTM As of Mar. 2026)

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Director of Data and Quant Analytics at GuruFocus
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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.

WLK Westlake Corp WLK
60 GF Score
Price $70.50
GF Value $105.64
Valuation Possible Value Trap
! 4 Warning Signs
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What is Westlake Interest Expense?

Westlake WLK -1.70% 60 Interest Expense is $-188 Mil as of Mar. 2026. GuruFocus rates WLK with a GF Score™ of 60/100 and a GF Value™ of $105.64 (Possible Value Trap). The stock has 4 warning signs investors should review.

Interest Expense is the amount reported by a company or individual as an expense for borrowed money. Westlake's interest expense for the three months ended in Mar. 2026 was $ -56 Mil. Its interest expense for the trailing twelve months (TTM) ended in Mar. 2026 was $-188 Mil.

Interest Coverage is a ratio that determines how easily a company can pay interest expenses on outstanding debt. It is calculated by dividing a company's Operating Income(EBIT) by its Interest Expense. Westlake's Operating Income for the three months ended in Mar. 2026 was $ -154 Mil. Westlake's Interest Expense for the three months ended in Mar. 2026 was $ -56 Mil. Westlake did not have earnings to cover the interest expense. The higher the ratio, the stronger the company's financial strength is. Note: If both Interest Expense and Interest Income are empty, while Net Interest Income is negative, then use Net Interest Income as Interest Expense.


Westlake  (NYSE:WLK) Interest Expense Explanation

Interest Coverage is a ratio that determines how easily a company can pay interest expenses on outstanding debt. It is calculated by dividing a company's Operating Income (EBIT) by its Interest Expense. The higher, the better.

Note: If both Interest Expense and Interest Income are empty, while Net Interest Income is negative, then use Net Interest Income as Interest Expense.

Westlake's Interest Expense for the three months ended in Mar. 2026 was $-56 Mil. Its Operating Income for the three months ended in Mar. 2026 was $-154 Mil. And its Long-Term Debt & Capital Lease Obligation for the three months ended in Mar. 2026 was $5,746 Mil.

Westlake's Interest Coverage for the quarter that ended in Mar. 2026 is calculated as

Westlake did not have earnings to cover the interest expense.

* 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.

The higher the ratio, the stronger the company's financial strength is.


Westlake Interest Expense Historical Data

* Premium members only.

The historical data trend for Westlake's Interest Expense 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.

Westlake Interest Expense Chart

Westlake Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Interest Expense
Get a 7-Day Free Trial Premium Member Only Premium Member Only -176.00 -177.00 -165.00 -159.00 -171.00

Westlake Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Interest Expense 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 -39.00 -40.00 -41.00 -51.00 -56.00
WLK
60GF Score
Westlake Corp WLK
Interest Expense is just one metric. See GF Score™, valuation, warning signs, and more.
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Westlake Interest Expense Calculation

Interest Expense is the amount reported by a company or individual as an expense for borrowed money.

Interest Expense for the trailing twelve months (TTM) ended in Mar. 2026 adds up the quarterly data reported by the company within the most recent 12 months, which was $-188 Mil.

* 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 Interest Expense →
What does a Interest Expense of $-188 Mil mean?
Westlake (WLK) has a Interest Expense of $-188 Mil as of Mar. 2026. Interest Expense is the amount a company pays on its long-term debt. View historical data on Westlake and its competitors.
Is Westlake's Interest Expense too high?
Westlake's current Interest Expense is $-188 Mil. Overall, Westlake has a GF Score™ of 60/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Westlake's Interest Expense compare to SOLS and ESI?
Westlake's Interest Expense of $-188 Mil can be compared against companies in the Chemicals industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Interest Expense for a Chemicals company?
A good Interest Expense depends on the Chemicals industry context. However, Interest Expense 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 Interest Expense mean?
A high Interest Expense can signal that a stock is expensive relative to its fundamentals. Interest Expense is the amount a company pays on its long-term debt. View historical data on Westlake and its competitors. Westlake's current Interest Expense is $-188 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Westlake stock overvalued right now?
Based on GuruFocus' analysis, Westlake (WLK) is currently considered Possible Value Trap. The stock's GF Value™ is $105.64, compared to a current price of $70.50 — trading 33.3% below its estimated fair value. The current Interest Expense is $-188 Mil. Westlake's overall GF Score™ is 60/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Interest Expense calculated?
Interest Expense is calculated from a company's financial statements. For Westlake (WLK), the current Interest Expense is $-188 Mil 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 Westlake (WLK) Overvalued in 2026?

Based on GuruFocus' analysis, Westlake stock appears to be undervalued. The current stock price of $70.50 is trading 33.3% below its estimated GF Value™ of $105.64. GuruFocus considers Westlake to be Possible Value Trap.

Key valuation signals for WLK:

  • Interest Expense: $-188 Mil
  • GF Value™: $105.64 vs. price of $70.50 (33.3% below fair value)
  • GF Score™: 60/100 with 4 warning signs

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


Westlake Business Description

Address 2801 Post Oak Boulevard, Suite 600, Houston, TX, USA, 77056
Westlake is a forward-integrated commodity chemicals firm based in Houston. It began as a single low-density polyethylene plant and expanded its capabilities to include ethylene, vinyl chloride monomers, and polyvinyl chloride over the next two decades. The acquisition of Axiall in 2016 made it a North American leader in chlor-alkali and PVC. Today, Westlake has two defined segments: performance and essential materials, and housing and infrastructure products. The HIP segment began operating in 2022 following a series of acquisitions in the building products space. The firm aims to maximize the value of its chemical production by integrating with the HIP segment, realizing the higher margins of finished commercial goods.
60GF Score

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

$70.50
Price
$105.64
GF Value