Terrance Dolan
Analyst · Deutsche Bank
Thanks, Andy. If you turn to Slide 5, I'll start with a balance sheet review and follow up with a discussion of earnings trends.
In the first quarter, average loans grew 2.3% compared with the first quarter of 2017, a decline by 0.1% on a linked-quarter basis. During the quarter, we reclassified $1.5 billion of student loans originated under the federal loan program to held for sale. As you know, we exited the student loan origination business in 2012, and the runoff portfolio is not as strategically important to our future businesses. The reclassification did not materially affect our average balance sheet for the quarter. However, it did affect ending loan balance growth.
Turning to core trends. Average loan growth is slowest in the first quarter for each year, reflecting seasonality affecting credit card, auto lending and mortgage banking, in particular. This quarter, mortgage loans increased 0.9% sequentially but were up 3.9% year-over-year. Similarly, retail loans declined 0.2% sequentially but increased 6.1% year-over-year. Retail and mortgage loan growth is seasonally stronger in the second quarter of each year, and we feel good about core trends in auto lending and leasing, where we continue to gain market share and credit card balances.
Adding to the impact of seasonality on retail loan growth this quarter were a few factors. Commercial and commercial real estate portfolios continue to be impacted by elevated levels of pay-downs. While average commercial loans increased 4.0% from a year ago, average balances declined 0.1% sequentially. Pipelines improved as the quarter developed, and we continue to grow commitments. However, line utilization remains at historical lows, and pay-down activity was exacerbated this quarter by corporate clients flushed with cash on the heels of tax reform and continuing to deleverage their balance sheet.
Turning to commercial real estate. Average loans declined 6.5% year-over-year and 1.6% on a linked-quarter basis. The risk reward dynamics in commercial real estate remain unfavorable in our view, particularly in multifamily and certain areas of commercial mortgage lending. That discipline is influencing decisions to not extend credit on unfavorable terms and adding to the elevated pay-down pressures, driven by customers accessing the secondary market.
This quarter, commercial real estate contributed a 25 basis point drag to the linked-quarter average loan growth and a 160 basis point drag to year-over-year average loan growth. In the near term, we intend to remain disciplined in our commercial real estate lending.
Turning to Slide 6. Average deposit -- average total deposits increased 1.9% year-over-year but declined 1.4% on a linked-quarter basis. The linked-quarter decline partly reflects typical first quarter seasonality that we see in Corporate and Commercial Banking and Wealth Management and Investment Services.
Within our Corporate Trust business, CLO issuances and deal closings tend to be seasonally lower in the first quarter, impacting balances. In addition, investment managers deployed funds for loan and other asset purchases, taking advantage of favorable debt market conditions in the early part of the first quarter. Recently, our deal pipeline strengthened within the Corporate Trust business and ending deposits began to seasonally increase across the business lines.
Slide 7 indicates the credit quality was relatively stable. Net charge-offs as a percentage of average loans increased 3 basis points on a linked-quarter basis and were down 1 basis point compared with the first quarter of 2017. Nonperforming assets were essentially flat compared with the fourth quarter and down 19.5% in the first quarter of 2017.
Slide 8 provides highlights of first quarter earnings results. Please note that during the first quarter, the company adopted accounting standards related to revenue recognition, and certain revenue and expense categories have been recast to reflect the change in accounting standard. The adoption had no material impact on operating income, as you can see on Slide 9.
Slide 9 also shows how tax reform impacted our first quarter net interest income and the related revenue growth rates. In the first quarter, net revenue of $5.5 billion was down 2.3% compared with the fourth quarter and up 3.4% versus the first quarter of 2017. Adjusting for the impact of tax reform on our taxable equivalent net interest income, revenue increased 3.9% on a year-over-year basis.
On Slide 10, net interest income on a fully taxable-equivalent basis was $3.2 billion in the first quarter, essentially flat compared with the fourth quarter and up 5.5% year-over-year, which was in line with our guidance. Linked-quarter growth was impacted by 2 fewer days, while year-over-year growth was supported by growth in loans and higher loan yields.
In the first quarter, the net interest margin was 3.13%. This is 2 basis points higher than the fourth quarter net interest margin of 3.11%. Both periods include the impact of the reclassifications related to the revenue recognition standards. Excluding the impact of tax reform on tax-exempt earning assets, the net interest margin increased by 4 basis points on a linked-quarter basis. The increase was driven by higher yields on earning assets due to higher rates and a steeper yield curve, partly offset by higher funding costs.
Our interest-bearing deposit betas continue to perform in line with past experience and our expectation after the December rate hike. We expect the total interest-bearing deposit beta following the most recent rate hike will be about 40%. As future rate hikes occur, we continue to expect our deposit beta will gradually trend toward a 50% level.
Slide 11 highlights trends of noninterest income, which decreased by 4.1% on a linked-quarter basis and increased 0.6% on a year-over-year basis. Linked-quarter results are affected by seasonality within our credit and debit card, merchant processing and mortgage banking businesses.
On a year-over-year basis, we saw growth in credit and debit card revenue and corporate payments revenue due to higher sales volume. Merchant processing services revenue increased 2.5%, supported by strong volume growth, which our processing revenue continues to be impacted by exiting 2 joint ventures in the second quarter of 2017. We continue to expect that merchant-acquiring revenue will return to a more normalized mid-single-digit pace by the third quarter of 2018.
Trust and investment management fees increased 8.2% year-over-year, driven by business growth, net asset inflows and favorable market conditions. Strong growth in payments revenue, trust and investment management revenue and deposit service fees was partly offset by an 11.1% decrease in mortgage banking revenue, which was affected by lower refinancing activity and lower gain on sale margins and a 10.9% decrease in commercial product revenue.
Treasury management fees declined 2%, reflecting the impact of changes in earnings credit, which is a trend typical in a rising rate environment. Client behavior related to tax reform was a headwind to our commercial products revenue this quarter. Meaningful deleveraging by clients flushed with cash led to reduced corporate bond issuance and investment-grade underwriting activity. There was also a significant reduction in municipal market activity due to a pull forward of issuance into the fourth quarter of 2017 related to tax reform.
Corporate bond market conditions have improved in the early weeks of the second quarter, and announced M&A activity continues to pick up.
Turning to Slide 12. Noninterest expense decreased 0.6% on a linked-quarter basis, excluding notable items included in the fourth quarter. On a year-over-year basis, expenses grew by 5.0%, in line with our expectation for the quarter. Personnel expenses were the biggest driver of costs, while non-personnel expenses declined 1.2% from a year ago.
Compensation expense increased 9.5%, principally due to the impact of hiring to support business growth and compliance programs, merit increases, higher variable compensation related to business production and the impact of changes in vesting provisions related to stock-based compensation programs. This vesting change was related to changes in our compensation programs in response to shareholder feedback and to ensure competitive programs within the employment and [dot-com] market. The vesting change negatively impacted year-over-year expense growth by 130 basis points. Excluding this impact, total noninterest expense would have been -- would have increased by 3.7%, and compensation expense would have increased 6.9% from a year ago.
Notably, within non-personnel expenses, professional service expense declined 13.5% from a year ago, primarily due to fewer consulting services as compliance programs near maturity.
As we've discussed previously, we had an inflection point in a growth rate of cost related to the build-out of programs related to our consent order in the second half of 2018. Compliance-related costs will continue to moderate through the year.
We have started to deploy increased investment dollars towards digital capabilities and innovation projects, multicultural initiatives and brand. The impact of these investments will occur over the next several quarters, and the magnitude will depend upon the timing of our investment opportunities.
Including the impact of these business investments, we still expect full year 2018 expense growth will be within the 3% to 5% range we think of as normalized. As a result of our investments, we expect stronger revenue growth, improved productivity and expense efficiencies in the future.
With respect to income taxes, our tax rate on a taxable-equivalent basis decline from approximately 29% in 2017, excluding notable items, to a tax rate on a taxable-equivalent basis of 18.9% in the first quarter of 2018. This tax rate was slightly lower than expected due to the accounting impact of stock-based compensation and the resolution of certain tax matters during the quarter.
Slide 13 highlights our capital position. At March 31, our common equity Tier 1 capital ratio, estimated using the Basel III standardized approach, was 9.0%. This compares to our capital target of 8.5%.
I will now provide some forward-looking guidance. For the second quarter, we expect net interest income to increase in the mid-single-digit range on a year-over-year basis. We expect fee revenue to increase to the low single-digit range year-over-year. As a reminder, fees are seasonally higher in the second quarter.
We expect expense growth to be in the mid-single-digit range year-over-year, within our long-term growth target of 3% to 5%. We expect to deliver positive operating leverage for the full year 2018. We expect credit quality to remain relatively stable compared with the first quarter, and our full year tax rate on a taxable-equivalent basis is estimated to be about 21%.
I'll hand it back to Andy for closing remarks.