David Gamsey
Analyst · Peter Christiansen with Citi
Thank you, Scott, and good morning, everyone. Turning to Slide 10. We reported revenues of $174.8 million for the quarter, a 67% increase over the prior year period, including 60% organic growth. We benefited from accelerated hiring that picked up in the second half of 2020 and has continued through the second quarter of 2021.
Increases from our existing customer base and new customers made up $49.3 million and $13.4 million of our organic growth, respectively. Existing customer growth was particularly strong in Q2 and broad-based across key verticals and geographies.
We also lapped the quarter during which First Advantage and the broader market was significantly impacted by the effects of the COVID-19 pandemic. In addition to our organic growth, acquisitions contributed $7.1 million to the increase in revenues for the quarter. Also included in our revenues was a minimal foreign currency benefit, which was less than $1 million in the quarter.
Adjusted EBITDA for the quarter was $56.3 million, a 78% year-over-year increase, reflecting flow-through from higher revenues as well as margin expansion attributed to increased automation, cost discipline and operating leverage. This resulted in an adjusted EBITDA margin of 32.2%, up from 30.1% in the comparable prior year quarter.
We had adjusted net income of $33.2 million or $0.25 per diluted share in the second quarter of 2021 compared to $12.2 million or $0.09 per diluted share in the second quarter of 2020. This growth was positively impacted by all of the factors just mentioned along with the additional favorable impact of lower outstanding debt and lower interest rates, which together resulted in lower interest expense.
This was partially offset by higher foreign taxes. Our adjusted effective tax rates were 25.7% and 28% in Q2 of 2020 and Q2 of 2021, respectively. The higher rate in the second quarter of 2021 was primarily driven by several foreign tax items, including an increase in the corporate tax rate in the U.K.
On Slides 11 and 12, we have included quarterly financial results going back to 2019 to give you a sense of our consistent growth over time and some of the seasonality in our business. We typically see higher revenues September through November as companies ramp hiring ahead of the holiday season. More about that shortly.
Financially, we have a long and proven track record of revenue growth and margin expansion. We demonstrated the resiliency of our model in 2020 as we continue to grow both revenues and adjusted EBITDA and to expand our margins despite a very challenging year impacted by the COVID-19 pandemic and the disruption that it caused throughout the overall economy and job market.
We have a predictable financial model supported by long-term contracts and very high retention rates. Our growth benefits from our deep customer relationships, our focus on enterprise customers, upsell, cross-sell and the attractive verticals in which we operate. Additionally, our verticalized sales force continues to drive market share gains.
Now moving to Slide 12. We have an excellent track record of expanding our adjusted EBITDA margins primarily through 4 initiatives. First, we are expanding our utilization of our proprietary databases and increasing our automation with third-party data providers. Second, we are focused on technological innovations, including robotic process automation initiatives, which drive operational efficiencies, increase accuracy and enhance our customers' turnaround times.
Third, we have a strong procurement team that continues to optimize our vendor network and create additional cost savings. And fourth, we continue to leverage our G&A infrastructure. Additionally, our cost structure is largely variable and flexible. And therefore, we have the ability to flex our operations to accommodate fluctuations in demand. We tightly control operations costs and associated head count. This underscores our disciplined balance between cost efficiency and strategic investments as we continue to invest in technology and sales while leveraging G&A costs.
Turning now to cash flows, balance sheet and capital allocation on Slide 13. In the second quarter, operating cash flows were $32.4 million, a 49% increase over the prior year quarter. This was after considering the growth in accounts receivable attributable to our higher second quarter revenues. Additionally, we spent $6.3 million on purchases of property and equipment and capitalized software development costs during the quarter.
In connection with our June IPO, we received net proceeds of approximately $316.5 million after offering expenses. We used a portion of the net proceeds to prepay $200 million under our outstanding first lien credit facility, which does not mature until 2027. As a result of this prepayment, we have no remaining mandatory quarterly principal payments due under the agreement.
We intend to use the balance of the proceeds for general corporate purposes. Additionally, we plan to selectively pursue strategic M&A opportunities. We ended the second quarter with total debt of $564.7 million and cash and cash equivalents of $257.1 million. With LTM adjusted EBITDA of $180.8 million, we lowered our net leverage to 1.7x from approximately 4.5x at the end of 2020.
In connection with the closing of the IPO, we increased the borrowing capacity under our revolving credit facility to $100 million from $75 million and extended the maturity date to July 31, 2026. We do not have any outstanding balances under this facility. Additionally, following the IPO, in recognition of our improved credit profile, the debt ratings of First Advantage were upgraded by Moody's and S&P Global.
Next, I would like to review our capital allocation priorities. First, we are and will continue to evaluate potential acquisition opportunities that align with our strategic priorities are expected to be accretive and generate strong return on investment.
We see a steady flow of M&A opportunities from our commercial and industry relationships, and we continue to evaluate select opportunities on a regular basis. These might include opportunities to gain additional vertical expertise, expand internationally or into new adjacent services or add complementary data or technologies.
Second, we continue to be focused on internal investment opportunities, new product development and other projects that would increase organic growth. We are also focused on maintaining and enhancing our industry leadership position through technology and automation while continuing to invest in sales, solution engineering and customer success.
And finally, we continue to be focused on maintaining a strong balance sheet and a conservative capital structure. Our goal generally is to maintain a flexible leverage profile within a targeted long-term range of 2 to 3x net debt to adjusted EBITDA, absent any temporary variations as a result of potential future acquisitions.
Next, on Slide 14, is our guidance for full year 2021. As context, please note that the 2020 comparison provided on the slide is pro forma for the January 31, 2020, Silver Lake transaction and related refinancing, which is further described in our presentation and 10-Q.
Turning to guidance. We expect to generate 2021 revenues in the range of $640 million to $650 million, reflecting continued broad-based strength across industry verticals and geographies, favorable macroeconomic tailwinds, strong hiring trends supporting base growth, additional upsell, cross-sell to existing customers, high retention and continuing new customer wins. Our guidance also includes contribution from the U.K. screening business acquisition we completed at the end of March, which we expect will contribute in the mid-single digits to our full year 2021 revenue growth percentage.
In the second half of the year, we anticipate a continuation of the strong demand we have been experiencing, resulting in full year revenue growth in the range of 26% to 28% as compared to 2020. Overall, our expected revenue growth rate in the second half of the year is higher than we had internally projected earlier in the year, coming in above the higher end of their long-term target range, although lower on a percentage basis than Q2, during which time we were lapping the more severe impacts of the COVID-19 pandemic.
While consistent with most of our peers, we don't plan on providing quarterly guidance, but we will provide some additional color on this call given the anniversary of COVID impacts on 2020. We expect revenues to be more evenly distributed on a dollar basis between Q3 and Q4 of 2021 compared to what we might generally see where Q4 is usually a clear seasonal high because of the holiday hiring season.
This is because in 2020, we experienced accelerating growth in Q3 and especially in Q4 notably in home delivery, transportation and essential retail customers. So while there are base effects in 2020 that affect the quarterly percentage growth rates, there is continued strong momentum in the business, such that we see the second half exceeding both our prior internal projections and our longer-term percentage growth rate target.
Longer term, beyond 2020, our targeted organic revenue growth rate is in the high single digits to low double digits. We anticipate our 2020 adjusted EBITDA will be between $186 million and $190 million, driven by continued strong flow-through from incremental revenues, increased automation, additional efficiencies and operating leverage, offset by new public company costs and additional investments in product, technology and sales.
Both revenues and adjusted EBITDA in the second half of the year are anticipated to be higher than we had internally projected earlier in the year. We expect our 2021 adjusted net income to be between $110 million and $113 million, which will be positively impacted by lower outstanding debt and lower interest rates partially offset by higher foreign taxes. We also anticipate capital expenditures in the range of $25 million to $26 million, which includes capitalized software development costs.
We believe that our second half and full year 2021 adjusted effective tax rate will be in the range of 26.5% to 27.5%, driven by the impact of several foreign tax items, including the previously mentioned increase in the corporate tax rates in the U.K. This adjusted effective tax rate illustrates the ongoing rate that would be applicable to our adjusted pretax income based on geographic mix, absent other tax assets. We continue to have U.S. federal NOL carryforwards of approximately $190 million as of June 30, 2021. We expect our cash tax payments to be approximately $7 million for full year 2021.
And with that, I will turn the call back over to Scott.