MNSB (MainStreet Bancshares) Effective Interest Rate on Debt %: 78.44% (As of Mar. 2026)

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MNSB MainStreet Bancshares Inc MNSB
67 GF Score
Price $23.10
GF Value $19.58
Valuation Modestly Overvalued
! 7 Warning Signs
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What is MainStreet Bancshares Effective Interest Rate on Debt %?

MainStreet Bancshares MNSB +0.63% 67 Effective Interest Rate on Debt % is 78.44% as of Mar. 2026. GuruFocus rates MNSB with a GF Score™ of 67/100 and a GF Value™ of $19.58 (Modestly Overvalued). The stock has 7 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. MainStreet Bancshares's annualized positive value of Interest Expense for the quarter that ended in Mar. 2026 was $54.90 Mil. MainStreet Bancshares's average total debt for the quarter that ended in Mar. 2026 was $69.99 Mil. Therefore, MainStreet Bancshares's annualized Effective Interest Rate on Debt % for the quarter that ended in Mar. 2026 was 78.44%.


MainStreet Bancshares  (NAS:MNSB) Effective Interest Rate on Debt % Explanation

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


MainStreet Bancshares Effective Interest Rate on Debt % Related Terms


MainStreet Bancshares Effective Interest Rate on Debt % Historical Data

* Premium members only.

The historical data trend for MainStreet Bancshares'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.

MainStreet Bancshares Effective Interest Rate on Debt % Chart

MainStreet Bancshares 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 48.33 13.27 38.94 98.90 86.79

MainStreet Bancshares Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 86.46 87.11 84.33 78.44 79.11

MNSB vs EMYB, NODB, PRMY: Effective Interest Rate on Debt % Comparison

For the Banks - Regional subindustry, MainStreet Bancshares'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.


MainStreet Bancshares Effective Interest Rate on Debt % vs Banks Industry

For the Banks industry and Financial Services sector, MainStreet Bancshares's Effective Interest Rate on Debt % distribution charts can be found below:

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


MNSB
67GF Score
MainStreet Bancshares Inc MNSB
Effective Interest Rate on Debt % is just one metric. See GF Score™, valuation, warning signs, and more.
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MainStreet Bancshares Effective Interest Rate on Debt % Calculation

MainStreet Bancshares'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  *  -62.043/( (73.039+69.936)/ 2 )
=-1  *  -62.043/71.4875
=86.79 %

where

Total Debt  (A: Dec. 2024 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=73.039 + 0
=73.039

Total Debt  (A: Dec. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=69.936 + 0
=69.936

MainStreet Bancshares'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  *  -54.896/( (69.936+70.035)/ 2 )
=-1  *  -54.896/69.9855
=78.44 %

where

Total Debt  (Q: Dec. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=69.936 + 0
=69.936

Total Debt  (Q: Mar. 2026 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=70.035 + 0
=70.035

* 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 78.44% mean?
MainStreet Bancshares (MNSB) has a Effective Interest Rate on Debt % of 78.44% as of Mar. 2026. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on MainStreet Bancshares and its competitors.
Is MainStreet Bancshares' Effective Interest Rate on Debt % too high?
MainStreet Bancshares' current Effective Interest Rate on Debt % is 78.44%. Overall, MainStreet Bancshares has a GF Score™ of 67/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does MainStreet Bancshares' Effective Interest Rate on Debt % compare to EMYB and NODB?
MainStreet Bancshares' Effective Interest Rate on Debt % of 78.44% can be compared against companies in the Banks 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 Banks company?
A good Effective Interest Rate on Debt % depends on the Banks 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 MainStreet Bancshares and its competitors. MainStreet Bancshares's current Effective Interest Rate on Debt % is 78.44%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is MainStreet Bancshares stock overvalued right now?
Based on GuruFocus' analysis, MainStreet Bancshares (MNSB) is currently considered Modestly Overvalued. The stock's GF Value™ is $19.58, compared to a current price of $23.10 — trading 18% above its estimated fair value. The current Effective Interest Rate on Debt % is 78.44%. MainStreet Bancshares' overall GF Score™ is 67/100 with 7 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 MainStreet Bancshares (MNSB), the current Effective Interest Rate on Debt % is 78.44% 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 MainStreet Bancshares (MNSB) Overvalued in 2026?

Based on GuruFocus' analysis, MainStreet Bancshares stock appears to be overvalued. The current stock price of $23.10 is trading 18% above its estimated GF Value™ of $19.58. GuruFocus considers MainStreet Bancshares to be Modestly Overvalued.

Key valuation signals for MNSB:

  • Effective Interest Rate on Debt %: 78.44%
  • GF Value™: $19.58 vs. price of $23.10 (18% above fair value)
  • GF Score™: 67/100 with 7 warning signs

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


MainStreet Bancshares Business Description

Other Exchanges MNSBP.PFD:USA5L0:Germany
Address 10089 Fairfax Boulevard, Fairfax, VA, USA, 22030
MainStreet Bancshares Inc is a bank holding company. It is focused on serving the borrowing, cash management and depository needs of small to medium-sized businesses, and professional practices and retail customers. The bank's products and services include business and consumer checking, premium interest-bearing checking, business account analysis, savings, certificates of deposit and other depository services, as well as a broad array of commercial, real estate and consumer loans.
67GF Score

Get the complete analysis for MNSB

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

$23.10
Price
$19.58
GF Value