Tamilnad Mercantile BankNSE:TMB -4.04%57 WACC % is 30.17% as of Jun. 29, 2026, which is 16% below its 10-year median of 35.75. GuruFocus rates NSE:TMB with a GF Score™ of 57/100 and a GF Value™ of ₹560.58 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 1,546 Banks companies, Tamilnad Mercantile Bank ranks worse than 90.82% on this metric.
As of today (2026-06-29), Tamilnad Mercantile Bank's weighted average cost of capital is 30.17%%. Tamilnad Mercantile Bank's ROIC % is 0.00% (calculated using TTM income statement data).
Tamilnad Mercantile Bank earns returns that do not match up to its cost of capital. It will destroy value as it grows.
For a comprehensive WACC calculation, please access the WACC Calculator.
Tamilnad Mercantile Bank (NSE:TMB) WACC % Explanation
Because it costs money to raise capital. A firm that generates higher ROIC % than it costs the company to raise the capital needed for that investment is earning excess returns. A firm that expects to continue generating positive excess returns on new investments in the future will see its value increase as growth increases, whereas a firm that earns returns that do not match up to its cost of capital will destroy value as it grows.
As of today, Tamilnad Mercantile Bank's weighted average cost of capital is 30.17%%. Tamilnad Mercantile Bank's ROIC % is 0.00% (calculated using TTM income statement data).
Tamilnad Mercantile Bank earns returns that do not match up to its cost of capital. It will destroy value as it grows.
Be Aware
1. GuruFocus uses book value of debt (D) to do the calculation. It is simplified by adding latest one-year quarterly average Short-Term Debt & Capital Lease Obligation and Long-Term Debt & Capital Lease Obligation together.
For companies that report quarterly, GuruFocus combines all of the most recent year's quarterly debt data from the beginning of the year to the year-end and calculates the average.
For companies that report semi-annually, GuruFocus combines all of the most recent year's semi-annual debt data from the start of the year to the year-end and calculates the average.
For companies that report annually, GuruFocus combines the beginning and ending annual debt data from the most recent year and then calculates the average.
2. The WACC formula discussed above does not include Preferred Stock. Please adjust if preferred stock is considered.
3. (Expected Return of the Market - Risk-Free Rate of Return) is also called market premium. GuruFocus requires market premium to be 6%.
4. GuruFocus uses the latest TTM Interest Expense divided by the latest one-year quarterly average debt to get the simplified cost of debt.
* 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.
Tamilnad Mercantile Bank WACC % Competitor Comparison
For the Banks - Regional subindustry, Tamilnad Mercantile Bank's WACC %, along with its competitors' market caps and WACC % 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.
Tamilnad Mercantile Bank WACC % vs Banks Industry
For the Banks industry and Financial Services sector, Tamilnad Mercantile Bank's WACC % distribution charts can be found below:
* The bar in red indicates where Tamilnad Mercantile Bank's WACC % falls into.
The weighted average cost of capital (WACC) is the rate that a company is expected to pay on average to all its security holders to finance its assets. The WACC is commonly referred to as the firm's cost of capital. Generally speaking, a company's assets are financed by debt and equity. WACC is the average of the costs of these sources of financing, each of which is weighted by its respective use in the given situation. By taking a weighted average, we can see how much interest the company has to pay for every dollar it finances.
WACC
=
E
/
(E + D)
*
Cost of Equity
+
D
/
(E + D)
*
Cost of Debt
*
(1 - Tax Rate)
1. Weights:
Generally speaking, a company's assets are financed by debt and equity. We need to calculate the weight of equity and the weight of debt.
The market value of equity (E) is also called "Market Cap". As of today, Tamilnad Mercantile Bank's market capitalization (E) is ₹115921.182 Mil.
The market value of debt is typically difficult to calculate, therefore, GuruFocus uses book value of debt (D) to do the calculation. It is simplified by adding the latest one-year quarterly average Short-Term Debt & Capital Lease Obligation and Long-Term Debt & Capital Lease Obligation together. As of Mar. 2026, Tamilnad Mercantile Bank's latest one-year quarterly average Book Value of Debt (D) is ₹8166.56 Mil.
a) weight of equity = E / (E + D) = 115921.182 / (115921.182 + 8166.56) = 0.9342
b) weight of debt = D / (E + D) = 8166.56 / (115921.182 + 8166.56) = 0.0658
2. Cost of Equity:
GuruFocus uses Capital Asset Pricing Model (CAPM) to calculate the required rate of return. The formula is:
Cost of Equity = Risk-Free Rate of Return + Beta of Asset * (Expected Return of the Market - Risk-Free Rate of Return)
a) GuruFocus uses 10-Year Treasury Constant Maturity Rate as the risk-free rate. It is updated daily. The current risk-free rate is 7.02%. Please go to Economic Indicators page for more information. Please note that we use the 10-Year Treasury Constant Maturity Rate of the country/region where the company is headquartered. If the data for that country/region is not available, then we will use the 10-Year Treasury Constant Maturity Rate of the United States as default.
b) Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. Tamilnad Mercantile Bank's beta is 0.7083.
c) (Expected Return of the Market - Risk-Free Rate of Return) is also called market premium. GuruFocus requires market premium to be 6%.
Cost of Equity = 7.02% + 0.7083 * 6% = 11.2698%
3. Cost of Debt:
GuruFocus uses latest TTM Interest Expense divided by the latest one-year quarterly average debt to get the simplified cost of debt.
As of Mar. 2026, Tamilnad Mercantile Bank's interest expense (positive number) was ₹32921.5 Mil. Its total Book Value of Debt (D) is ₹8166.56 Mil.
Cost of Debt = 32921.5 / 8166.56 = 403.1257%.
4. Multiply by one minus TTM Tax Rate:
GuruFocus uses the most recent TTM Tax Expense divided by the most recent TTM Pre-Tax Income to calculate the tax rate. The calculated TTM tax rate is limited to between 0% and 100%. If the calculated tax rate is higher than 100%, it is set to 100%. If the calculated tax rate is less than 0%, it is set to 0%.
The latest calculated TTM Tax Rate = 4690.5 / 18066 = 25.96%.
* 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.
Tamilnad Mercantile Bank (NSE:TMB) has a WACC % of 30.17% as of Jun. 29, 2026. The weighted average cost of capital (WACC) is the average rate a company pays to finance assets. View historical data on Tamilnad Mercantile Bank and its competitors. This is 16% below median its historical median of 35.75. Over the past decade, Tamilnad Mercantile Bank's WACC % has ranged from 30.14 to 39.73. According to the industry distribution chart, Tamilnad Mercantile Bank ranks #1404 out of 1546 companies in the Banks industry, placing it in the top 90.8%.
Is Tamilnad Mercantile Bank's WACC % too high?
Tamilnad Mercantile Bank's current WACC % of 30.17% is 16% below median its 10-year median of 35.75. Over the past 10 years, this metric has ranged from a low of 30.14 to a high of 39.73. The Banks industry median WACC % is 13.18. Tamilnad Mercantile Bank's value of 30.17% is 129% above this industry median. Based on the distribution chart, Tamilnad Mercantile Bank ranks #1404 out of 1546 companies in the Banks industry, which is in the bottom quartile relative to peers. Overall, Tamilnad Mercantile Bank has a GF Score™ of 57/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Tamilnad Mercantile Bank's WACC % compare to competitors?
According to the Banks industry distribution chart, Tamilnad Mercantile Bank ranks #1404 out of 1546 companies for WACC %. This places Tamilnad Mercantile Bank in the lower half of its industry. The industry median WACC % is 13.18. Tamilnad Mercantile Bank's value of 30.17% is 129% above this benchmark. Historically, Tamilnad Mercantile Bank's own WACC % has ranged from 30.14 to 39.73 over the past decade. While the company's 10-year median is 35.75 vs. the industry median of 13.18, Tamilnad Mercantile Bank has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good WACC % for a Banks company?
The median WACC % among Banks companies is 13.18, based on 1,546 companies in the industry. Companies in the top quartile (top 25%) have a WACC % significantly above this median, while those in the bottom quartile fall well below. However, WACC % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Tamilnad Mercantile Bank's current WACC % of 30.17% is 129% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high WACC % mean?
A high WACC % can signal that a stock is expensive relative to its fundamentals. The weighted average cost of capital (WACC) is the average rate a company pays to finance assets. View historical data on Tamilnad Mercantile Bank and its competitors. For the Banks industry, the median WACC % is 13.18 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Tamilnad Mercantile Bank's current WACC % is 30.17%, which is 16% below median its own 10-year median of 35.75. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tamilnad Mercantile Bank stock overvalued right now?
Based on GuruFocus' analysis, Tamilnad Mercantile Bank (NSE:TMB) is currently considered Significantly Overvalued. The stock's GF Value™ is ₹560.58, compared to a current price of ₹732.60 — trading 30.7% above its estimated fair value. The current WACC % is 30.17%, which is 16% below median its 10-year median of 35.75 and 129% above the Banks industry median of 13.18. Tamilnad Mercantile Bank's overall GF Score™ is 57/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is WACC % calculated?
WACC % is calculated from a company's financial statements. For Tamilnad Mercantile Bank (NSE:TMB), the current WACC % is 30.17% as of Jun. 29, 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 Tamilnad Mercantile Bank (NSE:TMB) Overvalued in 2026?
Based on GuruFocus' analysis, Tamilnad Mercantile Bank stock appears to be overvalued.
The current stock price of ₹732.60 is trading 30.7% above its estimated GF Value™ of ₹560.58.
GuruFocus considers Tamilnad Mercantile Bank to be Significantly Overvalued.
Key valuation signals for NSE:TMB:
WACC %: 30.17% (16% below median its 10-year median of 35.75)
GF Value™: ₹560.58 vs. price of ₹732.60 (30.7% above fair value)
Industry Position: 129% above the Banks median (#1404 of 1546)
No single metric tells the full story. See the NSE:TMB stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Tamilnad Mercantile Bank Ltd is engaged in providing a wide range of banking & financial services involving retail, corporate banking and para-banking activities in addition to treasury and foreign exchange business. The company has a portfolio of advances and deposits from a diversified customer base including retail customers, agricultural customers, and MSMEs. The segments of the bank are Treasury, Corporate and Wholesale banking, Retail banking, and Other banking Operations. It generates the majority of its revenue from the Retail banking segment.
57GF Score
Get the complete analysis for NSE:TMB
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