Summa Defence Oyj (OSTO:SUMMAS) Effective Interest Rate on Debt %: 31.25% (As of Dec. 2025)

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OSTO:SUMMAS Summa Defence Oyj OSTO:SUMMAS
48 GF Score
Price kr5.54
GF Value kr13.51
Valuation Possible Value Trap
! 6 Warning Signs
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What is Summa Defence Oyj Effective Interest Rate on Debt %?

Summa Defence Oyj OSTO:SUMMAS +2.40% 48 Effective Interest Rate on Debt % is 31.25% as of Dec. 2025. GuruFocus rates OSTO:SUMMAS with a GF Score™ of 48/100 and a GF Value™ of kr13.51 (Possible Value Trap). The stock has 6 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. Summa Defence Oyj's annualized positive value of Interest Expense for the quarter that ended in Dec. 2025 was kr29 Mil. Summa Defence Oyj's average total debt for the quarter that ended in Dec. 2025 was kr93 Mil. Therefore, Summa Defence Oyj's annualized Effective Interest Rate on Debt % for the quarter that ended in Dec. 2025 was 31.25%.


Summa Defence Oyj  (OSTO:SUMMAS) Effective Interest Rate on Debt % Explanation

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


Summa Defence Oyj Effective Interest Rate on Debt % Related Terms


Summa Defence Oyj Effective Interest Rate on Debt % Historical Data

* Premium members only.

The historical data trend for Summa Defence Oyj'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.

Summa Defence Oyj Effective Interest Rate on Debt % Chart

Summa Defence Oyj 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 28.11 1.66 8.98 10.03 16.67

Summa Defence Oyj Semi-Annual Data
Jun16 Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
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 11.31 8.73 9.38 9.96 31.25

OSTO:SUMMAS vs SPCX, GE, RTX: Effective Interest Rate on Debt % Comparison

For the Aerospace & Defense subindustry, Summa Defence Oyj'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.


Summa Defence Oyj Effective Interest Rate on Debt % vs Aerospace & Defense Industry

For the Aerospace & Defense industry and Industrials sector, Summa Defence Oyj's Effective Interest Rate on Debt % distribution charts can be found below:

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


OSTO:SUMMAS
48GF Score
Summa Defence Oyj OSTO:SUMMAS
Effective Interest Rate on Debt % is just one metric. See GF Score™, valuation, warning signs, and more.
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Summa Defence Oyj Effective Interest Rate on Debt % Calculation

Summa Defence Oyj'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  *  -21.373/( (174.92+81.53)/ 2 )
=-1  *  -21.373/128.225
=16.67 %

where

Total Debt  (A: Dec. 2024 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=125.62 + 49.3
=174.92

Total Debt  (A: Dec. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=23.963 + 57.567
=81.53

Summa Defence Oyj's annualized Effective Interest Rate on Debt % for the quarter that ended in Dec. 2025 is calculated as

Effective Interest Rate on Debt %
=-1  *  Interest Expense/( (Total Debt  (Q: Jun. 2025 )+Total Debt  (Q: Dec. 2025 ))/ count )
=-1  *  -29.012/( (104.138+81.53)/ 2 )
=-1  *  -29.012/92.834
=31.25 %

where

Total Debt  (Q: Jun. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=75.78 + 28.358
=104.138

Total Debt  (Q: Dec. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=23.963 + 57.567
=81.53

* 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 two times the semi-annual (Dec. 2025) 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 31.25% mean?
Summa Defence Oyj (OSTO:SUMMAS) has a Effective Interest Rate on Debt % of 31.25% as of Dec. 2025. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on Summa Defence Oyj and its competitors.
Is Summa Defence Oyj's Effective Interest Rate on Debt % too high?
Summa Defence Oyj's current Effective Interest Rate on Debt % is 31.25%. Overall, Summa Defence Oyj has a GF Score™ of 48/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Summa Defence Oyj's Effective Interest Rate on Debt % compare to SPCX and GE?
Summa Defence Oyj's Effective Interest Rate on Debt % of 31.25% can be compared against companies in the Aerospace & Defense 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 Aerospace & Defense company?
A good Effective Interest Rate on Debt % depends on the Aerospace & Defense 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 Summa Defence Oyj and its competitors. Summa Defence Oyj's current Effective Interest Rate on Debt % is 31.25%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Summa Defence Oyj stock overvalued right now?
Based on GuruFocus' analysis, Summa Defence Oyj (OSTO:SUMMAS) is currently considered Possible Value Trap. The stock's GF Value™ is kr13.51, compared to a current price of kr5.54 — trading 59% below its estimated fair value. The current Effective Interest Rate on Debt % is 31.25%. Summa Defence Oyj's overall GF Score™ is 48/100 with 6 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 Summa Defence Oyj (OSTO:SUMMAS), the current Effective Interest Rate on Debt % is 31.25% 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 Summa Defence Oyj (OSTO:SUMMAS) Overvalued in 2026?

Based on GuruFocus' analysis, Summa Defence Oyj stock appears to be undervalued. The current stock price of kr5.54 is trading 59% below its estimated GF Value™ of kr13.51. GuruFocus considers Summa Defence Oyj to be Possible Value Trap.

Key valuation signals for OSTO:SUMMAS:

  • Effective Interest Rate on Debt %: 31.25%
  • GF Value™: kr13.51 vs. price of kr5.54 (59% below fair value)
  • GF Score™: 48/100 with 6 warning signs

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


Summa Defence Oyj Business Description

Other Exchanges SUMMA:Finland5J40:Germany
Address Makelankatu 87, Helsinki, FIN, 00610
Summa Defence Oyj is a Finnish defense and security technology group supporting industry growth and strengthening industrial production capacity amid geopolitical change. Summa Defence focuses on dual-use technologies related to security of supply, situational awareness, mobility, and defense, which benefit the civilian, security, and defense sectors while strengthening comprehensive security, security of supply, and crisis management capabilities. Its products includes Multipurpose vessels, Multipurpose machinery, Watermaster, containers and modular spaces, Drones, XR near-eye display solutions, Griselda - Intelligence data fusion platform, and Renewable energy.
48GF Score

Get the complete analysis for OSTO:SUMMAS

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

kr5.54
Price
kr13.51
GF Value