Josephine Iannelli
Analyst · related factors, please see our earnings release and our most recent SEC reports on Forms 10-K and 10-Q.
With that, I will turn the call over to Mike Daly, President and CEO
Thanks, Mike, and good morning to everyone on the line. We had a strong start to the year, growing our core EPS by 5% over the prior quarter, and getting good traction with our business strategies. As Mike noted, our loan growth came late in the quarter, which gives us solid momentum coming into the second quarter. We completed and integrated our branch purchase during the quarter, and expect to have more earnings power there that we will focus on developing. We also had a number of non-core charges, primarily stemming from that acquisition. I have a little more color on our non-core activity and GAAP results towards the end of my discussion.
You've heard from Mike about our organic balance sheet growth. I'd like to address our active balance sheet management, which we think will provide real payoff going forward. We announced during the quarter that we brought on Rick Thevenet as our SVP and Treasurer. Rick has a strong background in Fortune 500 treasury management, and he certainly jumped right in, taking a fresh look at our balance sheet.
So it starts with the branch acquisition, where we brought on $440 million in low-cost deposits with strong fee penetration in stable markets. We expect them to provide reliable, economical, long-term funding, which will become increasingly attractive when interest rates rise. With these stable funds, we were able to pay down borrowings. We elected to terminate existing interest-rate swaps related to those borrowings, and this reduced our ongoing borrowings expense. We also adjusted some of our other deposit funding costs, and deemphasized select municipal deposit sources and other higher-cost deposits. We think we can sustain, and maybe improve, on these funding costs going forward. We took advantage of more favorable interest rates earlier in the quarter to invest in mostly medium-term investment securities, and we put in place forward starting hedge protection for our interest income. With the benefit of these balance sheet improvements, we held our earning asset yield steady before purchase loan accretion, while reducing our funding costs by 17 basis points.
Our net interest margin improved to 3.35% from 3.26% during the quarter, and we posted a 7% increase in total interest income. Excluding purchase loan accretion, the margin improved by 17 basis points to 3.24% from 3.07%.
In the first quarter, we had $2.8 million in current period, purchase loan accretion, which included $2.1 million in impaired loan recoveries. Our loan yields before accretion decreased by 3 basis points, and we estimate it at just under 4% for the quarter.
As Mike has commented, we continue to pursue variable rate, relationship-based commercial loan business. Nearly half of our new commercial loan volume for the quarter was variable rate, and we look forward to the income benefit when rates start to increase. During the quarter, we completed the last leg of our core systems conversion. We have implemented a top-of-the-line loan analytics platform, which interfaces to our core. We realized the need for the system in the second half of last year when we initially posted an accounting adjustment. We have spent the last 2 quarters on this conversion, and the $1.4 million out-of-period adjustment was the culmination of this process based on the better data analytics in the new system. This is a significant investment for us, and we will provide advanced data analytics for tactical and strategic loan management, in addition to the accounting benefits, and this will support the active balance sheet management that we are pursuing. In addition to the 7% increase in our net interest income, we had a 14% increase in our fee income, as Mike has commented. Our total core revenue reached $57.3 million, increasing by $5.2 million, or 10% compared to the prior quarter.
Looking ahead to the second quarter, we expect to maintain our current loan growth momentum and to see a pickup in organic deposit growth. We plan to see total revenue climb a little higher, with ongoing organic growth resulting in both higher spread income and higher fee income. Even after considering accretion, runoff, we expect earning-asset growth will drive positive net interest income growth. Our goal is that fee income will grow at a higher rate than interest income. This reflects our emphasis on commercial relationships where fee income is a part of the overall profitability analysis, as well as our strategy to diversify revenue and increase wallet share in our footprint.
Turning to the loan-loss provision, we saw a modest increase that was in line with our guidance, based on the growth of our portfolio. We believe that the charge-off rate will stay around the current level. We expect the allowance to grow, but at a slower rate than the portfolio. We have ongoing improvements in the quality and the mix of loans, based on our credit disciplines and market strategies.
Looking at expenses, our total core expenses came in around $39 million, which was in line with our guidance. This included the expenses of the acquired branches, along with seasonal increases and benefits in maintenance costs, and targeted investments in revenue producers. We are looking to hold the line on total noninterest expense in Q2. And we expect to balance cost-save initiatives and seasonal cost reductions with investments in people, as we look to deepen our business-line penetration across our footprint. We do not anticipate any non-core expenses in the second quarter, and we expect our tax rate to stay around the 30% range.
As Mike noted, we completed the branch acquisition and integration in the first quarter. We are now 90 branches, including the benefit of the 20 branches that we acquired. We consolidated 2 of these branches as of the acquisition date, and we have consolidated 2 others existing branches, so far this year. So that's a total of 4 branches consolidated in the first 3 months of the year.
We continue to use Six Sigma to focus on efficiencies and synergies that we can mine based on our expense footprint and investment in our infrastructure. We had guided that our branch acquisition was expected to be neutral to core earnings in the first quarter. We are still pretty early on with this acquisition, with only 2 full months of reporting in hand at this time. We were patient in making decisions on utilizing and investing these new funds. Based on our recent investments and further growth plans in front of us, we expect to be able to identify accretive benefit as we move forward this year.
Looking at the whole picture, we feel that our organic growth momentum is good, and that we can offset the impacts of competitive market pricing conditions and runoff of purchase loan accretion. As I said, we expect to hold the line of expenses and taxes, and this will allow us to repeat or improve on our core EPS from Q1, producing $0.42 or better for the second quarter. We expect this to be a clean quarter with no non-core activity.
Turning to our GAAP results, we had guided to the fact that we would have non-core charges for the acquisition and restructuring in the first quarter, as we worked through these processes. Additionally, we identified the swap termination as an appropriate strategy during the quarter, and previously disclosed this event, which gave rise to additional non-core charges that, importantly, had no impact on equity since our swaps are already marked-to-market in equity. Our non-core charges came to $0.46, resulting in a $0.04 GAAP loss. This included $0.25 for the swap terminations, which, as we said before, were capital neutral; and $0.10 for branch deal costs; and $0.11 for all other items, including the accounting adjustment, system conversion, and restructuring initiatives.
At this time, we do not foresee future non-core activity and we are giving our full attention to profiting from the actions we have taken. The branch acquisition has been completed, and we've recognized the accounting impacts from the restructuring projects that were underway. Many of these involved real estate marketing and negotiations with landlords, which was a process that spans a number of months. While we expect to continue to fine-tune our operations, we feel that we have achieved our restructuring objective to rightsize our expenses and to set the foundation for core EPS growth.
Also, the loan analytics system conversion that I described, is a last major project related to our original core systems conversions. We did guide to tangible book value per share on our last call, and noted that it would dip below $16 due to the branch purchase dilution. We calculated this dilution at $0.55 per share, and we ended the quarter at $15.84 tangible book value per share, which is in line with our expectations.
As I mentioned last quarter, our goal beginning in the second quarter is to move tangible book value per share north at an annualized rate of 5% or more. I believe that we are well positioned to accomplish that goal based on our double-digit run rate for core return and tangible equity.
With our new system analytics capability, the new initiatives in our Treasury Department and our active balance sheet management, I'm very excited about the opportunities in front of us. We look forward to putting these benefits together, along with our organic growth and market share gains, to move us towards our goal for 1% ROA and double-digit ROE.
This completes my comments, and I'll turn the call back over to Mike.