SKN | Bank of America’s Net Interest Income Momentum Strengthens as Balance-Sheet Growth Drives 2026 Performance

Key Takeaways:

• Bank of America increased net interest income by 9% year over year to $31.7 billion during the first half of 2026.
• Second-quarter NII reached a record $16 billion, supported by loan growth, deposit expansion, and higher-yielding asset repricing.
• The bank’s improving funding mix and balance-sheet optimization helped lift net interest yield to 2.08% despite lower average short-term interest rates.
• Management expects full-year NII growth toward the upper end of its 6–8% guidance range, although comparisons may become more demanding later in the year.

Bank of America has entered the second half of 2026 with considerable momentum in one of banking’s most closely watched measures: net interest income. The bank generated $31.7 billion in NII during the first six months of the year, representing growth of 9% from the same period a year earlier, while second-quarter NII reached a record $16 billion.

For sophisticated investors, the significance extends beyond a single earnings metric. Bank of America’s performance provides a clearer view into how a large global bank can protect profitability when the interest-rate environment becomes less supportive. Balance-sheet composition, funding quality, and asset repricing are increasingly determining which institutions can sustain earnings momentum.

Loan Growth and Deposits Strengthen Bank of America’s Funding Engine

Bank of America’s NII growth has been supported by continued expansion across its balance sheet. Average loans and leases increased 8.3% year over year to $1.20 trillion during the first half of 2026, with commercial lending providing an important source of growth.

Average deposits also rose 2.7% to $2.02 trillion. The expansion of lower-cost deposits, including non-interest-bearing balances, has helped the bank manage funding costs while supporting lending growth.

This matters because deposit quality remains central to the economics of modern banking. When institutions rely heavily on wholesale funding or expensive market borrowings, rising funding costs can quickly erode lending profitability. Bank of America’s ability to maintain deposit growth therefore provides an important layer of earnings resilience.

Asset Repricing Offsets Pressure From Lower Short-Term Rates

A second driver has been the continued repricing of fixed-rate assets. As lower-yielding securities and loans originated in previous years mature, Bank of America has been replacing them with assets generating comparatively stronger returns.

This process helped lift the bank’s net interest yield to 2.08% in the second quarter from 1.94% a year earlier, despite lower average short-term rates reducing yields on variable-rate assets.

For HNWIs assessing large banking institutions, this demonstrates why headline interest-rate expectations alone can be misleading. A bank’s sensitivity to rates depends heavily on asset duration, deposit costs, and the timing of balance-sheet repricing. Bank of America appears to be benefiting from a favorable transition within its existing asset base.

Can the NII Uptrend Continue?

Management expects NII growth for 2026 to land near the upper end of its 6–8% guidance range. The outlook assumes modest additional loan and deposit growth, continued fixed-rate asset repricing, and further balance-sheet optimization.

However, the pace of year-over-year growth may moderate during the second half as comparisons become more demanding. The key issue is therefore not whether Bank of America can maintain the exact 9% growth rate, but whether it can preserve the underlying conditions supporting strong spread income.

The broader strategic message is clear: Bank of America’s advantage currently lies in the quality and scale of its balance sheet. Continued loan growth, a substantial deposit base, and improving asset yields are allowing the institution to generate stronger interest income even as the rate environment evolves.

For a confidential discussion regarding global banking exposure, balance-sheet quality, and how major financial institutions may fit within a cross-border wealth structure focused on capital preservation and long-term resilience, contact our senior advisory team.