million and $304 million. Republic’s banking centers and its website, www.republicbank.com, provide access to retail deposit markets. These retail deposit products, if offered at attractive rates, have historically been a source of additional funding when needed. If the Bank were to lose a significant funding source, such as a few major depositors, or if any of its lines of credit were canceled, or if the Bank cannot obtain brokered deposits, the Bank would be compelled to offer market leading deposit interest rates to meet its funding and liquidity needs.
As of September 30, 2021, the Bank had approximately $1.6 billion in deposits from 245 large non-sweep deposit relationships, including reciprocal deposits, where the individual relationship exceeded $2 million. The 20 largest non-sweep deposit relationships represented approximately $609 million, or 12%, of the Company’s total deposit balances as of September 30, 2021. These accounts do not require collateral; therefore, cash from these accounts can generally be utilized to fund the loan portfolio. If any of these balances were moved from the Bank, the Bank would likely utilize overnight borrowing lines in the short-term to replace the balances. On a longer-term basis, the Bank would likely utilize wholesale-brokered deposits to replace withdrawn balances, or alternatively, higher-cost internet-sourced deposits. Based on past experience utilizing brokered deposits and internet-sourced deposits, the Bank believes it can quickly obtain these types of deposits if needed. The overall cost of gathering these types of deposits, however, could be substantially higher than the Traditional Bank deposits they replace, potentially decreasing the Bank’s earnings.
Capital
Total stockholders’ equity increased from $823 million as of December 31, 2020 to $839 million as of September 30, 2021. The increase in stockholders’ equity was primarily attributable to net income earned during 2021 reduced primarily by cash dividends declared and Class A common stock repurchased.
See Part II, Item 2. “Unregistered Sales of Equity Securities and Use of Proceeds” for additional detail regarding stock repurchases and stock buyback programs.
Common Stock — The Class A Common shares are entitled to cash dividends equal to 110% of the cash dividend paid per share on Class B Common Stock. Class A Common shares have one vote per share and Class B Common shares have ten votes per share. Class B Common shares may be converted, at the option of the holder, to Class A Common shares on a share for share basis. The Class A Common shares are not convertible into any other class of Republic’s capital stock.
Dividend Restrictions — The Parent Company’s principal source of funds for dividend payments are dividends received from RB&T. Banking regulations limit the amount of dividends that may be paid to the Parent Company by the Bank without prior approval of the respective states’ banking regulators. Under these regulations, the amount of dividends that may be paid in any calendar year is limited to the current year’s net profits, combined with the retained net profits of the preceding two years. As of September 30, 2021, RB&T could, without prior approval, declare dividends of approximately $176 million. Any payment of dividends in the future will depend, in large part, on the Company’s earnings, capital requirements, financial condition, and other factors considered relevant by the Company’s Board of Directors.
Regulatory Capital Requirements — The Company and the Bank are subject to capital regulations in accordance with Basel III, as administered by banking regulators. Regulatory agencies measure capital adequacy within a framework that makes capital requirements, in part, dependent on the individual risk profiles of financial institutions. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on Republic’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Parent Company and the Bank must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities, and certain off-balance sheet items, as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators regarding components, risk weightings, and other factors.
Banking regulators have categorized the Bank as well capitalized. For prompt corrective action, the regulations in accordance with Basel III define “well capitalized” as a 10.0% Total Risk-Based Capital ratio, a 6.5% Common Equity Tier 1 Risk-Based Capital ratio, an 8.0% Tier 1 Risk-Based Capital ratio, and a 5.0% Tier 1 Leverage ratio. Additionally, in order to avoid limitations on capital distributions, including dividend payments and certain discretionary bonus payments to executive officers, the Company and Bank must hold a capital conservation buffer of 2.5% composed of Common Equity Tier 1 Risk-Based Capital above their minimum risk-based capital requirements.
Republic continues to exceed the regulatory requirements for Total Risk-Based Capital, Common Equity Tier I Risk-Based Capital, Tier I Risk Based-Capital and Tier I Leverage Capital. Republic and the Bank intend to maintain a capital position that meets or