"earnings base" is correct and usable in written English.
You can use it to refer to all of the income sources available to an individual or a business. For example, "As an entrepreneur, he is always looking for ways to broaden his earnings base."
That highlights the diversity in their earnings base".
"We are a British company with an increasingly international footprint and earnings base.
Relatively modest changes, such as raising the taxable earnings base slightly, would be sufficient to put the program on a sound footing virtually forever.
"Combined subsidiary performances continue to enhance G.M.'s core automotive operations while signficantly diversifying G.M.'s earnings base," the spokesman said.
Surely it is time to raise the taxable earnings base or even make all wages subject to the tax, as has already been done to relieve similar shortfalls in Medicare.
Downey said that earnings for the year benefited largely from the decline in the cost of funds, gains in the sale of loans and securities and higher income from an expanded earnings base.
C1 McDonald's Higher Earnings The McDonald's Corporation recorded a 29percentt increase in first-quarter earnings based largely on favorable currency trends.
Regulators also initially took a dim view on earnings, basing their projections on depressed 2008 year results.
The net earnings based on the price of hydrocarbons, fuel, steam, decoking, and maintenance cost are maximized.
And corporate earnings, based on current consensus forecasts, are not expected to rise as much this year as last.
It also represents a 34.1x multiple of Illumina's projected forward earnings based upon analysts' current consensus estimates for 2012.
