BAC's NII Growth Accelerates in 2026: Is the Stock Worth Buying Now?

Bank of America reported record Q3 2026 net interest income of $16.45 billion, up 8% year over year, and management projects NII growth of 8% in 2026 and at least 8% in 2027. The article highlights deposit strength, AI investment and $8.3 billion in Q3 capital returns, but flags expenses up 8.8% in the first nine months of 2026, trading-revenue volatility and credit risks. BAC shares fell 4.2% over six months, and 2026–27 earnings estimates were revised lower; despite trading at 10.0x forward earnings versus the industry's 12.2x, the article advises investors to avoid initiating positions and notes the stock's Zacks Rank #4 (Sell).

Analysis

The key read-through is a potential divergence between revenue momentum and earnings conversion: NII growth can coexist with weak EPS revisions if compensation, technology and remediation costs absorb incremental revenue. The reported loan growth exceeding deposit growth also makes the low current deposit cost less reliable as a forward margin anchor; watch deposit mix and pricing as competition for funding responds to asset growth. NII guidance is management’s outlook, not proof of durable operating leverage, and the AI benefit claims need verification through reported expense productivity rather than adoption metrics.

Near term (days to 1–3 months), estimate downgrades and the expense run-rate are more actionable than the discounted P/E, which may reflect execution risk rather than mispricing. The $1.2bn settlement is non-recurring, but underlying expense growth and softer trading revenues could still blunt the expected operating-leverage inflection. Over 6–18 months, successful cost conversion and stable deposit pricing could close the valuation gap; credit normalization or renewed deposit competition would undermine that case. A contrarian positive is that much of the near-term caution may already be reflected in BAC’s relative underperformance, but the article supplies no valuation history or forward earnings bridge to establish that the discount is excessive. Verify the guidance scope and reported results before acting.

Key Decisions for Investors

• Do not chase the NII headline. Keep BAC on watch pending the next earnings update: require expense growth to moderate and positive operating leverage to appear, while tracking deposit costs, deposit mix and loan growth.
• Relative-value watch: a small BAC-underweight/JPM-overweight pair is defensible if BAC’s expense and estimate trends remain weaker, but avoid treating JPM’s higher multiple as a free hedge. Reassess if BAC revisions stabilize and expense growth clearly decelerates.
• Treat management’s AI productivity estimate as an unverified catalyst, not a valuation input. Look for realized, recurring expense savings in reported results; pause the thesis if benefits remain claims without measurable operating leverage.
• Falsifiers: sustained NII growth accompanied by positive operating leverage and stable credit metrics would weaken the cautious view; further downward earnings revisions, rising deposit costs, or higher credit provisions would strengthen it. Verify the next reported figures and guidance before increasing exposure.