Wells Fargo Q3 growth puts deposit costs and interest margins in focus

A bigger balance sheet needs an earnings-quality test

Wells Fargo reported third-quarter results on October 13 showing average loans and deposits each growing 11% from a year earlier. Net interest income rose 5%, while net interest margin remained below its year-earlier level. For WFC investors, the question is how efficiently that larger balance sheet converts into income after funding costs, expenses and credit losses.

The immediate answer is mixed. More lending and investment securities supported interest income, and the bank reported lower operating expenses. But higher deposit costs and the composition of interest income make the headline growth rates an incomplete measure of progress. The results support a growing franchise; they do not establish that every additional dollar of funding is becoming more profitable.

Separate Markets from the rest of interest income

Reported net interest income was $12.517 billion, compared with $11.950 billion a year earlier, an increase of $567 million. The earnings presentation attributes $284 million of that increase to Markets net interest income, which reached $428 million. The remaining $283 million came from net interest income excluding Markets.

That distinction matters because roughly half the dollar increase came from Markets. Excluding Markets, net interest income was $12.089 billion, up about 2%. Wells Fargo identifies this as a non-GAAP measure and provides a reconciliation to reported net interest income. It is useful for examining lending, investing and deposit-raising activities separately from the volatility associated with Markets, but it should not replace the consolidated result.

Markets interest income also includes funding charges and credits under the bank's internal funds-transfer-pricing methodology. It cannot be treated as the total profit of the Markets business. Investors evaluating trading economics need the associated noninterest revenue, expenses and capital use as well. The split is an earnings diagnostic, not a claim that one component is inherently good or bad.

Funding mix explains why volume is not enough

Average loans reached $1.033 trillion and average deposits $1.483 trillion. Yet the average deposit cost was 1.56%, up two basis points from a year earlier and five basis points from the second quarter. The presentation links the sequential increase to higher interest-bearing deposit balances.

The bank says higher loan and investment securities balances and fixed-rate asset repricing supported net interest income excluding Markets. Offsetting factors included lower rates on floating-rate assets, higher deposit costs associated with growth in interest-bearing commercial deposits, and a modest decline in noninterest-bearing deposits, compared with the prior-year quarter.

Net interest margin, reported on a taxable-equivalent basis, was 2.43%, unchanged sequentially but down from 2.61% a year earlier. That is an 18-basis-point year-over-year decline. This margin includes taxable-equivalent adjustments and should not be confused with a simple ratio using only the reported GAAP income figure.

A larger balance sheet can still produce more dollars of income at a lower margin. Conversely, deposit growth can become less valuable if obtaining or retaining those deposits requires materially higher interest payments. The next test is whether asset repricing and customer growth continue to offset that funding pressure.

Expenses and credit provide the necessary counterweights

Total revenue increased 2% to $21.870 billion, while noninterest expense declined 1% to $13.743 billion. That combination is constructive: the bank generated more revenue with lower reported expense. Wells Fargo attributed the expense decline to efficiency initiatives, lower severance and lower lease expense, partly offset by compensation and technology-related costs.

Credit costs moved in the other direction. Provision for credit losses was $1.029 billion, compared with $681 million a year earlier. The company-wide earnings table shows net charge-offs of $983 million and a $46 million increase in the allowance for credit losses. The prior-year period included a $273 million allowance reduction, so the increase in provision should not be described entirely as a surge in realized losses.

Net income rose 6% to $5.951 billion and diluted EPS increased 13% to $1.87. The quarter also included $170 million of discrete tax benefits from resolving prior-period matters. That benefit belongs in the reported result, but an investor projecting recurring operating performance should identify it separately rather than automatically carry it forward.

What would change the assessment

The stronger case would combine continued customer balance growth with improving net interest income excluding Markets, stable funding costs and credit losses that remain manageable. Expense discipline would add to the benefit, provided it does not depend primarily on comparisons with unusual prior-year costs.

The weaker case would feature deposit costs absorbing more of the income from additional assets, or provisions rising faster than pre-provision earnings can cover them. Those are conditions to monitor, not forecasts of the next quarter. Wells Fargo labels these earnings materials preliminary pending its quarterly filing. For now, growth is visible, but its conversion into durable earnings requires watching the funding mix and credit expense alongside the balance-sheet totals.