Deanna D. Strable
Executive Vice President and Chief Financial Officer at Principal Financial Group
Thanks, Dan. Good morning to everyone on the call. This morning, I will share key contributors to financial performance for the quarter, an update on our current financial and capital position and details of our investment portfolio.
Reported net income attributable to Principal was a negative $140 million in the first quarter. Excluding the loss from exited businesses, net income was a positive $347 million with $11 million of credit losses. Credit drift was slightly positive in the quarter. Excluding significant variances, first quarter non-GAAP operating earnings were $395 million or $1.60 per diluted share, a strong result despite macroeconomic pressures on AUM levels during 2022. As Dan noted, first quarter results highlight the value of focus and the strength and resiliency of our diversified business strategy.
As detailed on Slide 17, significant variances had a net negative impact on our first quarter non-GAAP operating earnings of approximately $33 million pre-tax, $29 million after tax, and $0.12 per diluted share. The significant variances were primarily due to lower-than-expected variable investment income in RIS and Benefits and Protection. Mortality experience true-ups in RIS were mostly offset by LDTI model refinements in Specialty Benefits.
As discussed during our 2023 outlook call, we expected variable investment income from alternative investment returns, real estate sales, and prepayment fees to be lower than 2022 levels and lower than our expected long-term run rate due to macro environment heading into the year. VII was positive in total for the quarter, but we did not have any VII from prepayment fees or real estate sales. Macroeconomic volatility continued in the first quarter and pressured earnings in our fee-based businesses relative to a year-ago quarter.
While the S&P 500 daily average increased 4% from the fourth quarter of 2022, it was 11% lower than the first quarter of 2022, and 10% lower on a trailing 12-month basis. Foreign exchange rates were a tailwind compared to the fourth quarter, but a headwind relative to the year-ago quarter and on a trailing 12-month basis. Impacts to reported pre-tax operating earnings included a positive $7 million compared to fourth quarter of 2022, a slight negative compared to first quarter 2022, and a negative $17 million on a trailing 12-month basis.
Turning to the business units. The following comments on our first quarter results exclude significant variances. As a reminder, comparisons to first quarter of 2022 are impacted by the reinsurance transactions, that closed in the second quarter of 2022.
Revenue growth and margins in Specialty Benefits and Principal International were in line with our expectations in the first quarter. Revenue growth in RIS and PGI were pressured by the impacts of macroeconomic volatility and lower account values and AUM compared to a year ago, but both businesses are benefiting from more favorable conditions relative to the assumptions in our 2023 outlook. Despite the pressures on revenue growth, the margin in RIS was strong in the first quarter, and benefited from diligent expense management, one-time items in the quarter and timing of expenses. For the full year, we continue to expect to be within the 35% to 39% guided range with the ultimate level impacted by macro conditions for the remainder of the year. PGI's margin and pre-tax operating earnings were pressured by expected expense seasonality, as well as expected lower transaction and borrower fees.
Expenses in the first quarter were elevated by approximately $20 million due to seasonality of payroll taxes and deferred compensation. We continue to expect PGI's margin to be within the 34% to 37% guided range for the full year. Principal International had strong earnings in the first quarter, driven by growth across the business and higher AUM. Favorable impacts of inflation and higher interest rates in Brazil were offset by lower-than-expected encaje performance and VII in Chile.
In life, pre-tax operating earnings and margin were lower than expected, primarily due to higher claims experienced in the quarter. The decline in premium and fees was driven by the 2022 reinsurance transaction, and will normalize throughout the year. We continue to expect to deliver on our 2023 guidance for the full year, both at the business unit level, as well as for the total Company.
Turning to capital and liquidity, we remain in a strong financial position, despite the volatile environment. We ended the first quarter with $1.8 billion of excess and available capital, including more than $1.5 billion at the holding company. This includes our $800 million target, and $700 million of proceeds from debt issuance in the first quarter, that is earmarked for debt maturity, and redemption in the second quarter, $300 million in our subsidiaries, and $30 million in excess of our targeted 400% risk-based capital ratio. During the quarter, in addition to returning excess capital to shareholders, we accelerated our organic capital deployment as we saw attractive return opportunities in our businesses. This was a pull forward of our business plan for 2023. Looking ahead, our free capital flow generation will increase throughout the year.
We returned $306 million to shareholders in the first quarter, including $150 million of share repurchases and $156 million of common stock dividends. Last night, we announced a $0.64 common stock dividend payable in the second quarter, in line with our targeted 40% dividend payout ratio. We remain focused on maintaining our capital and liquidity targets at both the life company and the holding company, and we'll continue pursuing a balanced and disciplined approach to capital deployment.
I want to end my comments by providing some additional details of our investment portfolio, including our real estate exposure. As Dan mentioned, we have intentionally improved the overall credit quality across our fixed maturity, and real estate portfolios, since the global financial crisis. Our investments are high quality, well aligned with our liability profile, and we are well positioned for a variety of economic conditions.
Starting on Slide 11, specific to the real estate portfolio, as of the end of the first quarter, our commercial loan portfolio has a current average loan-to-value of 46%, and a debt service coverage of 2.5 times. This has improved from 62% and 1.8 times in 2008. We have minimal exposure to floating rate loans, and a very manageable maturity schedule of high-quality loans with only 4% maturing in 2023, and another 7% in 2024.
Our commercial office portfolio is geographically diverse and high quality. We saw signs of stress building in this sector, and proactively reduced our office exposure from 37% of our mortgage portfolio in 2016 down to 25% today. We have taken a conservative approach with our office portfolio, and have manageable near-term maturities. We have already reduced valuations in our office portfolio by 22% from the peak, and they are 20% below the current implied index value.
The current loan-to-value on our office portfolio is 52%, and debt service coverage is 2.5 times. We have looked at a number of different stress scenarios on office valuation. This includes an additional 20% to 40% decrease from our current conservative valuations, and assumes an immediate default of all office loans over 100% LTV. The ultimate impact to our RBC ratio is estimated to be 2 percentage points to 3 percentage points under the 20% additional decrease scenario, and 10 percentage points to 12 percentage points under the 40% additional decrease scenario, both very manageable. That said, we have the experience, and a long-established track record of navigating real estate cycles. It will take time for any market cycle to emerge, and the impacts would play out over a number of years.
Looking at our CMBS portfolio, relative to 2008, we have decreased the overall size of our portfolio by 22% and improved the quality to 98% with an NAIC 1 rating today. Our equity real estate portfolio is well diversified with a high concentration of property types with strong fundamentals, such as industrials, and life sciences. The market value of our portfolio is substantially higher than our carrying value. Overall, we are confident in the quality of our real estate portfolio, remain diligent in monitoring and proactive in servicing it. We have built a high-quality portfolio that is well diversified, and a good fit for our liability profile.
2023 will not be without its challenges, but we are positioned to focus on maximizing our growth drivers of retirement, global asset management and benefits and protection which will drive long-term growth for the enterprise and long-term shareholder value. We have the financial flexibility, discipline, and a track record of managing through times of macro volatility and uncertainty.
This concludes our prepared remarks. Operator, please open the call for questions.