Thomas Michael Price
Analyst · B. Riley Securities
Thanks, Ryan. The team and I here are pleased with the quarter. And we're enjoying playing some offense in our consumer lending businesses. Over the last several years, we've made significant investments in our digital capacity, our regional business model to spur growth, our fee businesses, and a stronger consumer lending platform. The fruits of these investments are apparent in our third quarter results. With several recent efforts like project THRIVE, we have made these investments while maintaining positive operating leverage and improving our efficiency.
Third quarter core earnings per share of $0.24 was consistent with last quarter, even as we further increased loan loss reserves. The core efficiency ratio improved to a record low of 54.45% and the core pretax pre-provision ROA strengthened to 1.74%.
Core pretax pre-provision net income was $41.1 million, up some 14% over the second quarter. The company achieved record quarterly fee income of $26.7 million, an increase of $4.9 million from the previous quarter. This more than offset a $4.4 million increase in provision expense to $11.2 million. Several important themes continue to unfold, namely: first, in the third quarter, credit was solid and we continue to build loan loss reserves to recognize the impact of the pandemic.
Excluding PPP balances, the allowance for loan losses as a percentage of total loans increased 10 basis points to 1.38%. Including previously disclosed day 1 CECL adjustment, the coverage ratio, excluding PPP loans would increase to 1.59% as seen on Page 10 of the earnings supplement.
The reserve build was driven by several qualitative factors in our incurred loss model, which Brian will cover during his remarks. Our nonperforming loans fell from $56 million at the end of the second quarter to $49.7 million at the end of the third quarter.
On Page 13 of the earnings supplement, COVID-19 deferrals totaled 2.68% as of July 24. Those deferrals fell to 17 basis points as of October 23 or last Friday. Similarly, on Page 12 of the earnings supplement, deferrals on the commercial portfolios most impacted by COVID, declined again from 3.4% on July 24 to 14 basis points as of last Friday. I believe we are well positioned at this stage of the pandemic with a strong balance sheet that can weather uncertainty.
Next, third quarter fee income as a percentage of revenue was 28.8%. We are particularly proud of this number as it reflects years of focus and investment as we've diversified our revenue stream. Our third quarter fee income was driven by strength across multiple business lines. First, interchange income was $6.4 million, up roughly $500,000 over the second quarter.
The team's retention of households and execution through 5 smaller acquisitions has really borne fruit here. Mortgage gain on sale income was $6.4 million, with a record quarter of $240 million in production. As an aside, 40% of these loans were not sold and remain on our balance sheet.
Again, we [ delivered ] our way into this business just over 5 years ago. Despite lackluster industry-wide small business demand, SBA gain on sale income was $1.4 million, which also contributed to fee income. Despite our smaller size in some of our larger metropolitan markets in which we compete, our 2020 SBA origination performance now ranks us #2 in Western Pennsylvania and #4 in Northern Ohio.
Also on the fee income front, trust revenue totaled a record $2.6 million as well. The third theme is loans. Loans grew $33 million or 2% on a linked-quarter basis as the consumer lending business led the way. And commercial lending, however, utilization of lines of credit fell some $55 million from 38% at the end of June to 34% at the end of September as businesses investment and working capital utilization has stalled.
Our mortgage, branch-based consumer and indirect lending businesses have been robust even as underwriting standards have been tightened. Fourth, the net interest margin contracted about 18 basis points to 3.11% in the third quarter despite respectable loan growth and resilient loan spreads, particularly on the consumer side.
Net interest income, however, was virtually unchanged, falling only $300,000 to $66.7 million. Excess liquidity and negative replacement yields on loans were the primary drivers of the decrease in NIM.
Jim will provide more color here. Fifth, core noninterest expenses were down $63,000 for the quarter to $52.3 million even -- $52.3 million even as we continue to invest in our digital platform and tools for our clients.
Importantly, the team launched a new digital platform in mid-September called [ Banno ], which replaced both our online banking and mobile banking platforms.
The team also completed the conversion of our larger businesses -- business customers to our new treasury management system. We also added the person-to-person payment option of Zelle.
These launches impacted well over 200,000 consumers and small businesses and by all accounts went smoothly. And with that, I'll turn it over to Jim.