Sun Brothers Development Co (ROCO:3489) Effective Interest Rate on Debt %: 0.90% (As of Mar. 2026)

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ROCO:3489 Sun Brothers Development Co Ltd ROCO:3489
45 GF Score
Price NT$26.10
GF Value NT$13.92
Valuation Significantly Overvalued
! 9 Warning Signs
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What is Sun Brothers Development Co Effective Interest Rate on Debt %?

Sun Brothers Development Co ROCO:3489 +0.58% 45 Effective Interest Rate on Debt % is 0.90% as of Mar. 2026. GuruFocus rates ROCO:3489 with a GF Score™ of 45/100 and a GF Value™ of NT$13.92 (Significantly Overvalued). The stock has 9 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. Sun Brothers Development Co's annualized positive value of Interest Expense for the quarter that ended in Mar. 2026 was NT$14.1 Mil. Sun Brothers Development Co's average total debt for the quarter that ended in Mar. 2026 was NT$1,562.6 Mil. Therefore, Sun Brothers Development Co's annualized Effective Interest Rate on Debt % for the quarter that ended in Mar. 2026 was 0.90%.


Sun Brothers Development Co  (ROCO:3489) Effective Interest Rate on Debt % Explanation

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


Sun Brothers Development Co Effective Interest Rate on Debt % Related Terms


Sun Brothers Development Co Effective Interest Rate on Debt % Historical Data

* Premium members only.

The historical data trend for Sun Brothers Development Co'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.

Sun Brothers Development Co Effective Interest Rate on Debt % Chart

Sun Brothers Development Co 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 0.03 0.04 0.09 0.33 0.95

Sun Brothers Development Co 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 1.17 0.93 0.96 0.71 0.90

Sun Brothers Development Co Effective Interest Rate on Debt % Competitor Comparison

For the Real Estate - Development subindustry, Sun Brothers Development Co'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.


Sun Brothers Development Co Effective Interest Rate on Debt % vs Real Estate Industry

For the Real Estate industry and Real Estate sector, Sun Brothers Development Co's Effective Interest Rate on Debt % distribution charts can be found below:

* The bar in red indicates where Sun Brothers Development Co's Effective Interest Rate on Debt % falls into.


ROCO:3489
45GF Score
Sun Brothers Development Co Ltd ROCO:3489
Effective Interest Rate on Debt % is just one metric. See GF Score™, valuation, warning signs, and more.
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Sun Brothers Development Co Effective Interest Rate on Debt % Calculation

Sun Brothers Development Co'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  *  -14.414/( (1556.807+1463.022)/ 2 )
=-1  *  -14.414/1509.9145
=0.95 %

where

Total Debt  (A: Dec. 2024 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=0 + 1556.807
=1556.807

Total Debt  (A: Dec. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=0 + 1463.022
=1463.022

Sun Brothers Development Co'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  *  -14.08/( (1463.022+1662.09)/ 2 )
=-1  *  -14.08/1562.556
=0.90 %

where

Total Debt  (Q: Dec. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=0 + 1463.022
=1463.022

Total Debt  (Q: Mar. 2026 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=0 + 1662.09
=1662.09

* 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 0.90% mean?
Sun Brothers Development Co (ROCO:3489) has a Effective Interest Rate on Debt % of 0.90% as of Mar. 2026. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on Sun Brothers Development Co and its competitors.
Is Sun Brothers Development Co's Effective Interest Rate on Debt % too high?
Sun Brothers Development Co's current Effective Interest Rate on Debt % is 0.90%. Overall, Sun Brothers Development Co has a GF Score™ of 45/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Sun Brothers Development Co's Effective Interest Rate on Debt % compare to competitors?
Sun Brothers Development Co's Effective Interest Rate on Debt % of 0.90% can be compared against companies in the Real Estate 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 a Real Estate company?
A good Effective Interest Rate on Debt % depends on the Real Estate 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 Sun Brothers Development Co and its competitors. Sun Brothers Development Co's current Effective Interest Rate on Debt % is 0.90%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sun Brothers Development Co stock overvalued right now?
Based on GuruFocus' analysis, Sun Brothers Development Co (ROCO:3489) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$13.92, compared to a current price of NT$26.10 — trading 87.5% above its estimated fair value. The current Effective Interest Rate on Debt % is 0.90%. Sun Brothers Development Co's overall GF Score™ is 45/100 with 9 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 Sun Brothers Development Co (ROCO:3489), the current Effective Interest Rate on Debt % is 0.90% 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 Sun Brothers Development Co (ROCO:3489) Overvalued in 2026?

Based on GuruFocus' analysis, Sun Brothers Development Co stock appears to be overvalued. The current stock price of NT$26.10 is trading 87.5% above its estimated GF Value™ of NT$13.92. GuruFocus considers Sun Brothers Development Co to be Significantly Overvalued.

Key valuation signals for ROCO:3489:

  • Effective Interest Rate on Debt %: 0.90%
  • GF Value™: NT$13.92 vs. price of NT$26.10 (87.5% above fair value)
  • GF Score™: 45/100 with 9 warning signs

No single metric tells the full story. See the ROCO:3489 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Sun Brothers Development Co Business Description

Address No. 50, Minquan Road, Luzhu District, Taoyuan, TWN, 338018
Sun Brothers Development Co Ltd is engaged in wholesale of building materials, developing, constructing, leasing and selling for residential, commercial or industrial buildings and others. It is also involved in the development and construction of collective housing and public works contract construction. The company's segments are: Real property section, and Construction section. It derives revenue from Construction segment.
45GF Score

Get the complete analysis for ROCO:3489

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

NT$26.10
Price
NT$13.92
GF Value