J. Michael Hansen
Executive Vice President & Chief Financial Officer at Cintas
Thanks, Todd, and good morning. Our fiscal 2025 3rd-quarter revenue was $2.61 billion compared to $2.41 billion last year. The organic revenue growth rate adjusted for acquisitions and foreign currency exchange rate fluctuations was 7.9%. As Todd alluded to, foreign-exchange rates negatively impacted 3rd-quarter revenue growth by-40 basis-points. Organic growth by business was 7% for Uniform rental and facility services, 15% for First Aid and safety services, 10.6% for Fire Protection services and Uniform Direct Sale was down 2.3%. First, gross margin for the 3rd-quarter of fiscal '25 was $1.32 billion compared to $1.19 billion last year, an increase of 11.1%.
Gross margin as a percent of revenue was an all-time high at 50.6% for the 3rd-quarter compared to 49.4% last year, an increase of 120 basis-points. Robust volume growth, operating leverage and continued operational efficiencies helped generate this strong gross margin. Gross margin percentage by business was 50% for Uniform rental and facility services, 57% for First Aid and Safety services, 49.9% for fire Protection services and 41.2% for Uniform Direct Sale. Gross margin for the Uniform Rental and Facility Services segment increased 120 basis-points from last year.
Our progress year-over-year reflects our focus on operational excellence initiatives combined with leverage from strong revenue growth. We continue to realize benefits from our technology investments and extracting inefficiencies from the business. Gross margin for the First Aid and Safety Services segment increased 70 basis-points from last year with strong revenue growth continuing to create leverage. Our sales mix remains favorable with more profitable First Aid products and increases in our recurring revenue products like AED rentals, iWash stations and water brick.
Our technology investment in Smart truck provides route optimization and improved efficiencies, and we continue to see sourcing benefits from our first day dedicated distribution center that have allowed us to lower product costs. All of these contribute to improved margins. Selling and administrative expenses as a percentage of revenue was 27.2%. As Todd shared, there was a $15 million gain on the sale of property during the 3rd-quarter of fiscal '25. Without that gain, selling and administrative expenses would have been 27.8%. Last year, there was a $15 million agreement in-principle to settle a purported class-action contract dispute.
Without that $15 million settlement, selling and administrative expenses last year would have been 27.1% instead of the reported 27.7%. 3rd-quarter operating income was $609.9 million compared to $520.8 million last year. Operating income as a percentage of revenue was 23.4% in the 3rd-quarter of fiscal '25 compared to 21.6% in last year's 3rd-quarter, an increase of 180 basis-points. Adjusted for the gain on the properties sale, operating margin in the 3rd-quarter of fiscal '25 was 22.8%, the second-highest in Centa's history. Our effective tax-rate for the 3rd-quarter was 21% compared to 19.9% last year.
The tax-rate in both quarters were impacted by certain discrete items, primarily the tax accounting impact for stock-based compensation. Net income for the 3rd-quarter was $463.5 million compared to $397.6 million last year. This year's 3rd-quarter diluted EPS of $1.13 compared to $0.96 last year, an increase of 17.7%. When adjusted for the $15 million property sale, EPS was $1.10. As Todd mentioned earlier, we continue to generate strong cash-flow. Over the first-nine months of the year, our free-cash flow increased 14.5% over the prior year. This has allowed us to invest back-in the business, which has resulted in the 3rd-quarter capital expenditures of $99.9 million.
We expect capital expenditures for the year to finish close to our target of 4% of revenue. As Todd provided our annual financial guidance related to the guidance, please note the following. First, fiscal '25 revenue guidance accounts for the impact of negative foreign currency exchange rate fluctuations. While the first-half of the year was negatively impacted by only 10 basis-points or $5 million, the second-half of the year is expected to be negatively impacted by approximately 40 basis-points or $16 million. Fiscal '25 net interest expense is expected to be approximately $100 million compared to $95 million in fiscal '24., our fiscal '25 effective tax-rate is expected to be 20.2%.
Please note that this implies a 4th-quarter effective tax-rate of 23% compared to an effective tax-rate in last year's 4th-quarter of 21.4%. You. As a reminder, there are two fewer work days in fiscal '25 compared to fiscal '24, which has a negative impact on total revenue growth of about 80 basis-points for the year. Also, as a reminder, the upcoming 4th-quarter will have one less work day than last year's 4th-quarter. This will negatively impact the 4th-quarter total revenue growth by about 160 basis-points. Guidance does not include any future share buybacks or significant economic disruptions or downturns. I'll now turn the call-back over to Todd for some closing remarks.