Ronald Gorczynski
Analyst · Piper Sandler
Thanks, Billy, and good morning, everyone. I'll be starting on Slide 11. Focusing on the top graph, we continue to improve our ROA metrics assumed by the continued and consistent steady's ramp in profitability. Moving on to the lower portion of the slide, our operating return on average tangible common equity of 14.5% continues to be a bright spot for us. We have done an excellent job of managing capital levels throughout the pandemic and didn't rush to raise capital.
Turning to Slide 12. As Miller indicated, we have continued our consistent trends of increasing our tangible book value with a 10.5% increase on a linked-quarter annualized basis. And year-over-year, we had increases of over 12%. On the lower portion of the graph, our operating efficiency ratio, represented by the green line, has been steadily improving. We are proud of our SMBK team for their continuous efforts on improving our efficiency levels. For the current quarter, we are still hovering at that 60% level.
Turning to Slide 13, net interest income. We reported net interest income -- excuse me, we reported net interest margin of 3.48%, a decline of 9 basis points from the prior quarter. Our net interest income FTE was $26.4 million for the quarter, very consistent with the prior quarter's $26.7 million. We did very well considering the headwinds of 2 fewer days of interest, lower loan rates and continued repricing of the balance sheet, all being partially offset by our continued benefit from our decreasing deposit costs.
During the quarter, our loan yields, less loan discount accretion and PPP fees, have declined 23 basis points from the prior quarter, but the prior quarter did include 7 to 8 basis points of escalation from an elevated amount of loan prepayment fees as well as our participation in the 2021 PPP program, which negatively impacted our loan yields by approximately 6 to 7 basis points. Overall, the decrease in loan yields were offset by 27 basis points or $1.6 million of loan discount accretion and 40 basis points, or $2.4 million of PPP accretion.
For our interest-bearing deposits, we had a decrease in funding costs of 6 basis points to 0.44%, with our cost of total deposits for the quarter at 0.33%. For the second quarter of 2021, we will have almost 19% of our time deposits maturing and repricing, so we still have an opportunity to further reduce our deposit costs, taking maybe another 2 to 3 basis points. Overall, we're removing loan discount accretion and PPP fee accretion, we believe our NIM has bottomed. Our expectations for our NIM is to hold steady and slowly rise during the latter part of 2021 and beyond.
Over the past several quarters, we've been maintaining elevated cash balances. Our average cash balance has increased almost $68 million for the quarter, with a quarterly average balance of $417 million. This elevated position of excess liquidity has negatively impacted our margin well over 20 basis points. As we have mentioned previously, we have taken a conservative approach and have been patient in the deployment of our excess cash since we don't know how permanent our liquidity position will be, going forward. These patience may have benefited us if -- this patience may have benefited us because if the forward interest rate curve materializes, we would be in a good position for deployment. We anticipate to use some of our excess funds to fund projected loan growth, and we anticipate on layering in more bond purchases over the next several quarters to get our securities asset ratio closer to the 10% level.
Looking forward, we are forecasting a second quarter margin around 3.20%. We are estimating to have loan accretion of 9 basis points or approximately $546,000 and estimated PPP loan fee accretion of 31 basis points, approximately $1.9 million.
Moving on to Slide 14, operating noninterest income. We had a great quarter for operating noninterest income as we continued our momentum in growing this category. For the quarter, we reported $5.7 million of operating noninterest income, an increase of almost $1.2 million from the prior linked quarter. Our service charge and interchange fee income remained stable. We had $124,000 increase from investment services from the continued growth in our assets under management.
For our mortgage banking team, we had another great quarter. As expected, our Q1 income is a little softer than the previous quarter, but still had revenues reaching over $1.1 million. As our pipeline remains strong coming into Q2, we are seeing some headwinds with increased building prices, delaying some projects, decreased inventory as well as an uptick in interest rates. With that said, we are still expecting some good things from our mortgage team for 2021 as we continue to grow this division.
We also had an outstanding product from our insurance division. Looking forward into the second quarter, we expect to gain some traction with additional fee income from our newly hired Director of Capital Markets. In addition, we have recently executed a branding agreement, which will provide increased interchange fee income during the second half of the year. Our forecast for the second quarter is having noninterest income of $5.1 million.
Continuing on to Slide 15. Again, we want to take the opportunity to once again introduce our family of revenue generators. During the quarter, we started to see some positive traction from our new internal referral system that's providing many ways directly to our revenue generators. We are highly optimistic that our continued focus will drive increases in our noninterest income category moving forward.
Turning to Slide 16, you'll find our operating noninterest expenses. As you can see on the slide, we are maintaining our level of expenses and are continuing to remain focused on expense control. During the quarter, our noninterest expenses have increased slightly. Some of the variances were our salary and employee benefit expense decreased slightly for the quarter, primarily relating to salary cost deferrals for the PPP loan originations. Our data processing and technology expense increases were related to peer pricing adjustments from our core processor and other technology-related expenditures.
Our other expense category had an increase of $578,000, with the majority of this increase related to our strategic investment in a start-up fintech company focusing on technology and the digital saving app space. Offsetting these increases were decreases in both our professional fees and amortization of intangibles, where the previous quarter had a higher level of expenditures.
Looking forward, our forecast for the second quarter is having noninterest expenses around the $20 million area, with salary and benefit expense around $12 million range. The reason for the increase from the prior quarter guidance is primarily attributable to the salary and expense run rate for the 8-person Gulf Coast lift-out team and additional expenses related to the company's health insurance premiums and technology-related spends.
Before we move to the next slide, let's touch base on taxes. Our income taxes for the current quarter reported an effective tax rate of 21.5%, which includes tax benefits derived from our continued involvement with the State of Tennessee Community Investment Loan program and, to a lesser extent, the benefit from having additional BOLI income. We are forecasting our effective tax rate of 21.5% for the second quarter of 2021.
Moving on to Slide 17, we look at our deposits. We have -- as we previously indicated, we have seen significant growth in our deposits. Our overall composition of deposits have continued to evolve, with time deposits currently making up 17% of our deposits. When compared to the same quarter last year, we had our time deposits making up over 30%.
Now to deposit earnings. We had another fantastic deposit quarter. Our total deposits continued to accelerate during the first quarter, with an increase of almost $243 million and ended the quarter over $3 billion, up over 30% from the same prior year quarter. For the current quarter, our noninterest-bearing deposits ended at $778 million, up over $92 million and represented almost 26% of total deposits compared to 18% for the same period quarter last year. In addition, our money marketing savings deposits were up over $154 million, and our time deposits continued to decrease down $38 million. At quarter end, our brokered deposits to total deposits dropped below the 2% level.
With that said, I'm now handing over the slide to Rhett Jordan, our Chief Credit Officer, to go over loan and credit-related info. Rhett?