Marissa Mayer, Yahoo's newly-installed CEO, could earn as much as $US100 million over the next five years, that is if she managed to stay that long in a chair that has seen five bosses in the same number of years.

The whole package, according to The Associated Press (AP), includes her annual salary, bonuses, restricted stock and stock options from a company that is still regarded as one of the majors in Silicon Valley.

But in jumping out of Google's ship, where Ms Mayer honed both her engineering and managerial skills, the new Yahoo chief was apparently lured by the secured prospect of collecting pay slips that read $US59 million over the next few years.

If she was able to stay much longer than her predecessors, Ms Mayer's one-time retention fee alone would fetch for her some $US30 million, which AP said was contained in the Thursday filing of Yahoo before the U.S. Securities and Exchange Commission (SEC).

It was understood that when she left Google on Monday, Ms Mayer gave up an arguably more secured financial environment but Yahoo dangled an equally attractive pay package that would assure a good life for the soon-to-be-mother executive.

For all her losses by quitting Google, Yahoo matched them with $US14 million worth of restricted stocks, payable over the next three years.

The first $US4 million, Yahoo said, will be given by the end of the year plus a bonus of $US1.4 million for working less than six months at the Internet and media firm, starting this week.

Ms Mayer's official yearly pay as CEO is $US1 million, at least in papers forwarded to regulators, but that level could easily spike exponentially with the way she would handle Yahoo's future path.

Analysts said considerable upticks in Yahoo shares in the near-term should prod the company board to further sweeten the deal that convinced its new chief to apply her own formula in guiding the internet pioneer to rediscover the old magic it enjoyed during the better part of the 1990s.

Her performance alone, according to AP, will determine if she will fall short or surpass the average salary that giant U.S. companies pay to their top honchos - it was $US9.6 million as of the end of 2011.

Its new boss, according to Yahoo, is entitled to collect some $US20 million yearly that largely will be influenced by how the company will behave over the next five years, with Ms Mayer occupying the driver's seat.

Heading north, the most watched CEO at the moment should be $US100 million richer by 2017 plus the collective awe of the tech world that has been witnessing Yahoo's fumbling moves in the past few years.