AltaGas (TSX:ALA) Effective Interest Rate on Debt %: 4.50% (As of Mar. 2026)

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TSX:ALA AltaGas Ltd TSX:ALA
74 GF Score
Price C$56.22
GF Value C$32.94
Valuation Significantly Overvalued
! 15 Warning Signs
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What is AltaGas Effective Interest Rate on Debt %?

AltaGas TSX:ALA +2.29% 74 Effective Interest Rate on Debt % is 4.50% as of Mar. 2026. GuruFocus rates TSX:ALA with a GF Score™ of 74/100 and a GF Value™ of C$32.94 (Significantly Overvalued). The stock has 15 warning signs investors should review.

Effective Interest Rate on Debt % is the usage rate that a borrower actually pays on a debt. It is calculated as the positive value of Interest Expense divided by its average total debt. Total debt equals to Long-Term Debt & Capital Lease Obligation plus Short-Term Debt & Capital Lease Obligation. AltaGas's annualized positive value of Interest Expense for the quarter that ended in Mar. 2026 was C$476 Mil. AltaGas's average total debt for the quarter that ended in Mar. 2026 was C$10,573 Mil. Therefore, AltaGas's annualized Effective Interest Rate on Debt % for the quarter that ended in Mar. 2026 was 4.50%.


AltaGas  (TSX:ALA) Effective Interest Rate on Debt % Explanation

Effective Interest Rate on Debt % measures the usage rate that a borrower actually pays on a debt.


AltaGas Effective Interest Rate on Debt % Related Terms


AltaGas Effective Interest Rate on Debt % Historical Data

* Premium members only.

The historical data trend for AltaGas's Effective Interest Rate on Debt % 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.

AltaGas Effective Interest Rate on Debt % Chart

AltaGas Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Effective Interest Rate on Debt %
Get a 7-Day Free Trial Premium Member Only Premium Member Only 3.17 3.50 3.93 4.45 4.41

AltaGas Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Effective Interest Rate on Debt % 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 4.39 4.41 4.41 4.50 4.50

TSX:ALA vs WMB, EPD, KMI: Effective Interest Rate on Debt % Comparison

For the Oil & Gas Midstream subindustry, AltaGas's Effective Interest Rate on Debt %, along with its competitors' market caps and Effective Interest Rate on Debt % 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.


AltaGas Effective Interest Rate on Debt % vs Oil & Gas Industry

For the Oil & Gas industry and Energy sector, AltaGas's Effective Interest Rate on Debt % distribution charts can be found below:

* The bar in red indicates where AltaGas's Effective Interest Rate on Debt % falls into.


TSX:ALA
74GF Score
AltaGas Ltd TSX:ALA
Effective Interest Rate on Debt % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

AltaGas Effective Interest Rate on Debt % Calculation

AltaGas's annualized Effective Interest Rate on Debt % for the fiscal year that ended in Dec. 2025 is calculated as

Effective Interest Rate on Debt %
=-1  *  Interest Expense/( (Total Debt  (A: Dec. 2024 )+Total Debt  (A: Dec. 2025 ))/ count )
=-1  *  -465/( (10567+10542)/ 2 )
=-1  *  -465/10554.5
=4.41 %

where

Total Debt  (A: Dec. 2024 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=9552 + 1015
=10567

AltaGas's annualized Effective Interest Rate on Debt % for the quarter that ended in Mar. 2026 is calculated as

Effective Interest Rate on Debt %
=-1  *  Interest Expense/( (Total Debt  (Q: Dec. 2025 )+Total Debt  (Q: Mar. 2026 ))/ count )
=-1  *  -476/( (10542+10604)/ 2 )
=-1  *  -476/10573
=4.50 %

where

Total Debt  (Q: Mar. 2026 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=10029 + 575
=10604

* 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.

In the calculation of annual Effective Interest Rate on Debt %, the Interest Expense of the last fiscal year and the average total debt over the fiscal year are used. In calculating the quarterly data, the Interest Expense data used here is four times the quarterly (Mar. 2026) interest expense data. Effective Interest Rate on Debt % is displayed in the 30-year financial page.

What does a Effective Interest Rate on Debt % of 4.50% mean?
AltaGas (TSX:ALA) has a Effective Interest Rate on Debt % of 4.50% as of Mar. 2026. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on AltaGas and its competitors.
Is AltaGas' Effective Interest Rate on Debt % too high?
AltaGas' current Effective Interest Rate on Debt % is 4.50%. Overall, AltaGas has a GF Score™ of 74/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does AltaGas' Effective Interest Rate on Debt % compare to WMB and EPD?
AltaGas' Effective Interest Rate on Debt % of 4.50% 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 Effective Interest Rate on Debt % for an Oil & Gas company?
A good Effective Interest Rate on Debt % depends on the Oil & Gas industry context. However, Effective Interest Rate on Debt % 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 Effective Interest Rate on Debt % mean?
A high Effective Interest Rate on Debt % can signal that a stock is expensive relative to its fundamentals. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on AltaGas and its competitors. AltaGas's current Effective Interest Rate on Debt % is 4.50%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is AltaGas stock overvalued right now?
Based on GuruFocus' analysis, AltaGas (TSX:ALA) is currently considered Significantly Overvalued. The stock's GF Value™ is C$32.94, compared to a current price of C$56.22 — trading 70.7% above its estimated fair value. The current Effective Interest Rate on Debt % is 4.50%. AltaGas' overall GF Score™ is 74/100 with 15 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Effective Interest Rate on Debt % calculated?
Effective Interest Rate on Debt % is calculated from a company's financial statements. For AltaGas (TSX:ALA), the current Effective Interest Rate on Debt % is 4.50% 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 AltaGas (TSX:ALA) Overvalued in 2026?

Based on GuruFocus' analysis, AltaGas stock appears to be overvalued. The current stock price of C$56.22 is trading 70.7% above its estimated GF Value™ of C$32.94. GuruFocus considers AltaGas to be Significantly Overvalued.

Key valuation signals for TSX:ALA:

  • Effective Interest Rate on Debt %: 4.50%
  • GF Value™: C$32.94 vs. price of C$56.22 (70.7% above fair value)
  • GF Score™: 74/100 with 15 warning signs

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


AltaGas Business Description

Industry EnergyOil & Gas
Address 707 - 5th Street SW, Suite 1300, Calgary, AB, CAN, T2P 1V8
AltaGas Ltd is a North American energy infrastructure company that connects customers and markets to energy sources. AltaGas has three reporting segments: Utilities, Midstream, and Corporate/Other. The majority of its revenue is generated from the Midstream segment, which operates a North American energy platform that moves natural gas and LPGs from the wellhead to markets. It exports propane and butane to Asia through its LPG terminals, and runs natural gas gathering, processing, fractionation, liquids handling, and storage infrastructure. The segment also includes its natural gas and natural gas liquids (NGLs) marketing business, domestic logistics, trucking and rail terminals, and liquid and natural gas storage capability. Geographically, the firm derives its key revenue from the U.S.
74GF Score

Get the complete analysis for TSX:ALA

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

C$56.22
Price
C$32.94
GF Value