⚠ What 2021 Tells You About 2024Moderate threat

Bank of America (BAC) — threat to the moat

Bank of America's deposits cost almost nothing in 2021 and two percent in 2024; the moat protects the spread, not the price.

A deposit franchise is cheap relative to market rates, not in absolute terms. Bank of America's cost of total deposits was about 0.03% in 2021 and about 2.00% in 20241. Interest on interest-bearing deposits went from $537 million in 2021 to $38,442 million in 202423.

Interest paid on interest-bearing deposits ($M)53720214,718202226,163202338,442202434,5132025Bank of America Forms 10-K FY2023 and FY2025, average balance tables
Seventy times more in three years.

That is not a failure of the franchise; every bank's funding cost rose. It is a reminder that the deposit moat protects the spread, not the level, and that a bank whose assets were locked in at low yields, as Bank of America's securities book was, feels the rise on the liability side before the asset side catches up.

The bank's net interest income tells the story. It was $56,931 million in 2023 and $56,060 million in 2024 before recovering to $60,096 million in 202545, as assets repriced upward and deposit costs eased.

Interest-bearing deposits show the move most starkly. Their average cost was 0.05% in 2021, 2.72% in 2024 and 2.35% in 202567. A 2.3-point swing on more than $1.4 trillion of balances is the rate cycle's bill, and it was paid by every bank that held deposits.

Interest on deposits is the item to follow. It fell to $34,513 million in 20258; a return toward the 2024 level without a matching rise in asset yields would squeeze the income the franchise exists to produce.

References
  1. Moat Explorer calcBank of America's cost of total deposits was about 0.03% in 2021 and about 2.00% in 2024.
    Moat Explorer calculation from Bank of America's reported figures ($ millions unless stated). Deposits: cost of total deposits = interest on interest-bearing deposits / (average interest-bearing + average noninterest-bearing deposits): 2019 7,188 / 1,380,326 = 0.52%; 2021 537 / 1,914,286 = 0.03%; 2022 4,718 / 1,986,158 = 0.24%; 2023 26,163 / 1,887,541 = 1.39%; 2024 38,442 / 1,924,106 = 2.00%; 2025 34,513 / 1,984,182 = 1.74% (1,469,705 + 514,477 = 1,984,182, about $1.98 trillion). Average total deposits 2015 1,155,860; 2021 1,914,286; 2022 1,986,158 (about $1.99 trillion); 2015 to 2025 1,984,182 / 1,155,860 - 1 = 72%. Noninterest-bearing share 744,035 / 1,914,286 = 38.9% (2021); 514,477 / 1,984,182 = 25.9% (2025). Noninterest-bearing decline 751,470 - 514,477 = 236,993 (about $237 billion). JPMorgan comparison: deposit cost gap 1.80% - 1.74% = 0.06 points; 0.0006 x 1,984,182 = about 1,190 (about $1.2 billion). JPMorgan revenue per dollar of average deposits 182,447 / 2,506,565 = 7.3 cents; Bank of America 113,097 / 1,984,182 = 5.7 cents. JPMorgan year-end deposits 2,559,320 / 2,018,729 - 1 = 27%; revenue 182,447 / 113,097 - 1 = 61%; market value 935.79 / 391.80 = 2.4 times. Net income margin JPMorgan 57,048 / 182,447 = 31.3%; Bank of America 30,509 / 113,097 = 27.0%. Efficiency gap 61.65% - 52% = 9.65 points x 113,097 = about 10,914 (about $10.9 billion). Loans to deposits 1,185,700 / 2,018,729 = 58.7%. Uninsured deposits 723.0 + 134.9 = 857.9 billion; 857.9 / 2,018.7 = 42.5%; insured and other 2,018.7 - 857.9 = 1,160.8 billion. Consumer deposits per checking account 957.0 billion / 38.7 million = about $24,700. Securities: held-to-maturity unrealised loss as a share of common equity 108,596 / 244,800 = 44% (2022); 82,094 / 276,100 = 30% (June 2026). Held-to-maturity amortised cost 2021 674,591 - 2025 522,685 = 151,906 (about $152 billion); 2020 438,279 to 2021 674,591 = +236,312 (about $236 billion); 2021 fair value 665,890 - cost 674,591 = -8,701. Runoff time 505,828 / 34,794 = 14.5 years. Agency MBS share of loss 67,309 / 80,257 = 84%. Net interest income H1 31,742 / 29,113 - 1 = 9.0%. Capital: CET1 headroom (11.2% - 10.0%) x 1,792 billion = about 21.5 billion; 2027 minimum 4.5% + 3.5% + 2.5% = 10.5%. Capital returned 2025 (8.1 + 21.433) / 29.055 = 101% of net income to common. Average diluted shares 7,680.9 / 11,236.2 - 1 = -31.6%. EPS growth (3.81 / 1.31)^(1/10) - 1 = 11.3% a year. Price to tangible book 56.03 / 29.37 = 1.91. Revenue 2023 102,769 to 2025 113,097 = +10%. Compensation 42,346 / 69,727 = 61% of noninterest expense. Financial centers 3,530 / 3,664 - 1 = -3.7%. Noninterest expense Q2 2026 18,627 / 17,183 - 1 = 8.4%. Berkshire holding 483,394,015 / 1,032,852,006 - 1 = -53%. Investment banking fees Q2 2025 implied 2.1 / 1.5 = 1.4 billion. Segments (FTE, 2025): segment revenue 43,673 + 24,883 + 24,108 + 24,096 = 116,760; less All Other 3,054 = 113,706; less FTE adjustment 609 = 113,097. Shares of total FTE revenue: Consumer 43,673 / 113,706 = 38.4%; GWIM 24,883 / 113,706 = 21.9%. Shares of net income 30,509: Consumer 12,245 = 40.1%; Global Banking 7,793 = 25.5%; Global Markets 6,111 = 20.0%; GWIM 4,670 = 15.3%. Net income margins: Consumer 12,245 / 43,673 = 28.0%; GWIM 4,670 / 24,883 = 18.8% (2024 4,263 / 22,929 = 18.6%; 2023 3,947 / 21,105 = 18.7%); Global Banking 7,793 / 24,108 = 32.3%; Global Markets 6,111 / 24,096 = 25.4%. Consumer net interest income 35,309 / 43,673 = 81%; Consumer provision 4,649 / 5,675 = 82%. Growth 2023-2025: Consumer 43,673 / 42,031 - 1 = 3.9%; GWIM 24,883 / 21,105 - 1 = 17.9%; Global Markets 24,096 / 19,533 - 1 = 23.4%; Global Banking net income 7,793 / 10,072 - 1 = -23%. Consumer H1 2026 revenue 11,336 + 11,049 = 22,385. GWIM net interest income 7,197 / 24,883 = 29%. Revenue per dollar of year-end assets: Global Markets 24,096 / 1,032,858 = 2.3 cents; Consumer 43,673 / 1,039,346 = 4.2 cents. GWIM client balances 4,751,394 / 4,252,106 - 1 = 11.7%, increase 499,288; net flows 81,997 / 4,252,106 = 1.9%; consumer investment assets 639.5 / 599.1 - 1 = 6.7%. Revenue per dollar of balances: Private Bank 4,167 / 759,082 = 0.55%; Merrill 20,716 / 3,992,312 = 0.52%; Private Bank share of GWIM balances 759,082 / 4,751,394 = 16% and revenue 4,167 / 24,883 = 17%. Investment and brokerage services 19,956 / 17,766 - 1 = 12.3%. Common equity 277,251 / total assets 3,411,738 = 8.1%. AUM net flows 81,997 / 2,177,708 = 3.8%. Held-to-maturity loss 2023 97,994 / 263,249 = 37%. Share price 56.03 / 52-week high 65.23 - 1 = -14%. First half 2026 (Q1 + Q2): Consumer Banking revenue 11,049 + 11,336 = 22,385 and net income 3,060 + 3,281 = 6,341; Global Banking net income 2,087 + 2,046 = 4,133; Global Markets revenue 7,109 + 8,022 = 15,131 - deposits, deposit cost and the securities book. — 2015-2026 · publ. September 2026 · source ↗
    Method: Arithmetic on figures reported in Bank of America's Forms 10-K and 10-Q, earnings releases, JPMorgan's 10-K, Berkshire 13F tables and market data; operands shown in the source line.
  2. ReportedInterest on interest-bearing deposits went from $537 million in 2021 to $38,442 million in 2024.
    Bank of America Form 10-K for fiscal 2023 - held-to-maturity securities at end-2022 and end-2023, average deposit balances for 2021-2023 and segment figures for 2021. — FY2023 · publ. February 2024 · source ↗
  3. ReportedInterest on interest-bearing deposits went from $537 million in 2021 to $38,442 million in 2024.
    Bank of America Form 10-K for fiscal 2025 - average balance sheet, deposits, net interest income and rate sensitivity. — FY2025 · publ. 25 February 2026 · source ↗
  4. ReportedIt was $56,931 million in 2023 and $56,060 million in 2024 before recovering to $60,096 million in 2025, as assets repriced upward and deposit costs eased.
    Bank of America Form 10-K for fiscal 2025 - average balance sheet, deposits, net interest income and rate sensitivity. — FY2025 · publ. 25 February 2026 · source ↗
  5. ReportedIt was $56,931 million in 2023 and $56,060 million in 2024 before recovering to $60,096 million in 2025, as assets repriced upward and deposit costs eased.
    Bank of America Form 8-K exhibit 99.1, revised supplemental information for the change in accounting for tax-related equity investments - restated 2023 and 2024 results. — FY2023-FY2024 · publ. 6 January 2026 · source ↗
  6. ReportedTheir average cost was 0.05% in 2021, 2.72% in 2024 and 2.35% in 2025.
    Bank of America Form 10-K for fiscal 2023 - held-to-maturity securities at end-2022 and end-2023, average deposit balances for 2021-2023 and segment figures for 2021. — FY2023 · publ. February 2024 · source ↗
  7. ReportedTheir average cost was 0.05% in 2021, 2.72% in 2024 and 2.35% in 2025.
    Bank of America Form 10-K for fiscal 2025 - financial highlights, income statement, capital and shareholders' equity. — FY2025 · publ. 25 February 2026 · source ↗
  8. ReportedIt fell to $34,513 million in 2025; a return toward the 2024 level without a matching rise in asset yields would squeeze the income the franchise exists to produce.
    Bank of America Form 10-K for fiscal 2025 - financial highlights, income statement, capital and shareholders' equity. — FY2025 · publ. 25 February 2026 · source ↗
Sources
Generated September 25, 2026