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The Mystery of Apple, Inc.'s One-Time Services Boost

Apple (NASDAQ: AAPL) reported fiscal fourth quarter earnings last week, and it was a blockbuster release both in terms of the September quarter as well as guidance for the December quarter. However, there was one big question mark buried within the release: a one-time positive adjustment of $640 million that was booked in the services segment.

Total services revenue jumped 34% to hit a new quarterly record of $8.5 billion, and $640 million is nothing to sneeze at, representing 7.5% of services revenue in the quarter. Apple's explanation was incredibly vague, merely stating: "Services revenue in the fourth quarter of 2017 included a favorable one-time adjustment of $640 million due to a change in estimate based on the availability of additional supporting information."

Front and back of iPhone X
Front and back of iPhone X

Image source: Apple.

There was hope that Apple would provide additional detail in its 10-K, but the iPhone maker merely repeated the same language in its annual report. Beyond a passing mention or two, the adjustment was also not discussed in detail on the conference call. What's going on with this one-time boost?

Is it Google?

The most feasible explanation is that this adjustment is related to Alphabet (NASDAQ: GOOG) (NASDAQ: GOOGL) subsidiary Google, which reported a meaningful increase in traffic acquisition costs (TAC) last quarter.

TAC

Q3'16

Q3'17

Change (YOY)

To Google Network Members

$2.6 billion

$3.1 billion

18%

To distribution partners

$1.6 billion

$2.4 billion

54%

Total

$4.2 billion

$5.5 billion

32%

Data source: SEC filings.

The TAC to distribution partners is the line item to focus on, which jumped 54% last quarter, as this relates to what Google pays to "browser providers, mobile carriers, original equipment manufacturers, and software developers."

Conference call clues

On Alphabet's earnings call, CFO Ruth Porat highlighted mobile as a driver of rising TAC expenses (emphasis added):

The increase in sites TAC as a percentage of sites revenues as well as network TAC as a percentage of network revenues continues to reflect the fact that our strongest growth areas, namely mobile search and programmatic, carry higher TAC. Total TAC as a percentage of total advertising revenues was up year-over-year, reflecting an increase in the sites' TAC rate, which was modestly offset by a favorable revenue mix shift from network to sites. The increase in the sites' TAC rate year-over-year was driven by changes in partner agreements and the ongoing shift to mobile, which carries higher TAC because more mobile searches are channeled through paid access points.