Doug Howell10:33
Thanks, Pat, and hello everyone. Today I'll walk you through our earnings release starting with some comments on first quarter organic growth and margins by segment including how we are seeing these shape up for the full year '25. Next I'll move to the CFO commentary document that we post on our IR website and walk you through our typical modeling helpers and then I'll conclude my prepared remarks with my usual comments on cash, M&A, and capital management.
Okay, let's flip to page two of the earnings release. Headline brokerage segment organic growth of 9.5% was a great quarter and it helps bolster our view that full year organic will be in that 6 to 8% range and that range is in line with what we've been saying all year. As Pat mentioned, first quarter did have some favorable timing of about a point. So looking forward, we see some favorable timing again in the second quarter, but not to the same magnitude. And then all of the first half timing will reverse itself in the third and fourth quarters with no impact on full year '25.
So as we look through to the rest of the year, second quarter might be more like 6 to 7%. Then we will see the timing flip in the third and fourth quarters might mean third and fourth quarter organic of about 5% each. Causes a little noise across the quarters, but with a 9.5% first quarter, the math gets us back to a full year '25 organic in that 6 to 8% range. That would be a terrific year.
So, flipping now to page four of the earnings release to the brokerage segment adjusted EBITDAC table. First quarter adjusted EBITDAC margin was 43.4% up 359 basis points year-over-year and above our March IR expectations. So, let me walk you through a bridge from last year as we typically do. First, if you pull out last year's 2024 first quarter earnings release, you'd see we reported back then adjusted EBITDAC margin of 39.9%. But now, using current period FX rates, that would have been 39.8%.
Then, organic growth of 9.5% gave us about 120 basis points of expansion this quarter. The rolling impact of M&A and lower interest rates each used about 10 basis points of margin this quarter. Finally, as the footnote at the bottom of that table notes, the impact of interest income from the cash that we're holding for the AssuredPartners acquisition added about 260 basis points of margin this quarter. Follow that bridge and it will get you to first quarter 2025 margin of 43.4%. That is really, really great work by the team.
As for second quarter headline margin expansion, it's still looking like we will be pushing around 300 basis points. Again, driven by strong underlying margin expansion of approximately 60 to 80 basis points, assuming organic in that 6 to 7% range and also interest income related to the cash we're holding for AP, less a small offset by the rolling of M&A and lower interest rates.
Looking out towards the third quarter, we would still expect underlying margin expansion and then we'll also have the impact of investment income on the funds we're holding for AP. So in total, we're thinking expansion could be 250 to 280 basis points. This of course would change if we get AP closed before September 30. As for fourth quarter, we would hope we'd have AP closed so we would have underlying margin expansion still but lose the extra investment income yet have AP's fourth quarter results in our books.
The punchline here is there's nothing we're seeing that causes us to change how we view underlying margin expansion potential. We believe at organic greater than 4% we should see some underlying margin expansion. At 6% organic, maybe 60 basis points of expansion. And at 8% organic, perhaps around 100 basis points of expansion. So again, there's no new news here. We still believe we are positioned to expand underlying full year margins by about 60 to 100 basis points.
Sticking on page four, risk management segment organic was 3.9%. That's a bit below our 5% expectation due to lower new business revenue. As Pat mentioned, we expect this to improve in the second half of the year as we have already sold new contracts, but these have yet to start generating revenue. So, we see organic moving back towards 6 to 8% throughout the year. Adjusted EBITDAC margin of 20.5% was in line with our March IRD expectations. And looking forward, we still see full year margins again around 20.5%.
Turning now to page six of the earnings release and the corporate segment shortcut table. For the adjusted interest in banking, clean energy, and acquisition lines, all were very close to our March IR expectations. The corporate line was better than our March expectations due to some expense timing, a few favorable tax items, including the tax benefit from stock-based compensation, somewhat offset by an unrealized FX remeasurement loss.
So, now let's move from the earnings release to the CFO commentary document that we post on our website. First, as an overall statement, please read the headers and footnotes carefully on how these numbers in this document include or exclude the impact of AssuredPartners. That said, let's flip to page three in the modeling helpers. Across the board, first quarter '25 actual numbers were fairly close to what we provided back in March.
One thing to call out in our '25 outlook are changes from FX for both the brokerage and risk management segments. With the dollar weakening since mid-March, we have provided updated estimates for revenue and EPS impacts for the remainder of the year. Just take a look at this disclosure as you refine your models.
Turning now to page four and the corporate segment outlook for '25 within the corporate line of the corporate segment. Like I mentioned earlier, we had some favorable expense timing in the first quarter. So you'll see some of that comes back over the rest of the year. We've increased after-tax expense by about a million dollars per quarter for the remainder of '25. However, the rest of our outlook for the corporate segment is unchanged from six weeks ago.
Flipping to page five to our tax credit carryovers. A reminder, as of March 31st, we have about $710 million of tax credits. We continue to expect additional cash flow of more than $180 million this year and even more in '26 and later years. And don't forget this benefit will show up in our cash flow statement rather than our P&L. So it's still a nice sweetener to fund future M&A.
Turning now to page six, the investment income table. We've updated our forecast to reflect current FX rates and changes in fiduciary cash balances. And you'll see here that we're still assuming two 25 basis point rate cuts during '25. You'll also see that we provided a separate line to show our estimates of interest income associated with the funds that we're holding to pay for AssuredPartners.
Shifting down on that page to the rollover revenue table, first quarter '25 column subtotal is around $80 million and $92 million before divestitures. These numbers are consistent with our March IR expectations. Looking forward, the pinkish columns to the right include estimated revenues for brokerage M&A closed through yesterday. And just a reminder, you'll need to make a pick for future M&A. Then below that table, we have a separate section for AssuredPartners. We show you what we expect for monthly pro forma revenues in purple. And then finally, continuing down on the page, you'll see the risk management segment rollover revenues too.
So moving to cash capital management and M&A funding. We had no outstanding borrowings on our line of credit at March 31st. And you might have seen that in early April, we amended our credit agreement. We extended the maturity date to April of 2030 and also increased our borrowing capacity from $1.7 billion to $2.5 billion. Our current cash position, potential borrowing capacity, and strong expected free cash flow position us well for our pipeline of M&A opportunities.
So even after the $13.5 billion for AssuredPartners, paying for Woodruff, and paying for the Willis re-earnout, and after the 11 other deals we have already done through Q1, we still have over $2 billion of M&A capacity here in '25 and another $5 billion of capacity in '26 before using any stock. So our M&A strategy has a tremendous runway. So another excellent quarter in the books. As we look ahead, we see strong organic growth, a terrific M&A pipeline. We continue to see opportunities to improve our productivity and quality, and as Pat said, we have a winning culture. So, it looks like we're well on track for another great year. Back to you, Pat.