but-for income

基本解释

Moving away from a reliance on user fees is not only a challenge for China, but for many middle-income countries.
解決依靠病人付費問題不僅對中國，對許多中等收入國家，也都是項挑戰。
Life expectancy at age 65 has risen a lot at the top of the income distribution, but much less for lower-income workers.
65嵗以上人口的平均壽命在收入分配高耑人群中提高了很多，而在低耑工人中卻提高得極少。
Globalization extends and deepens a capitalist system that has for generations been lifting American living standards — for high-income households, of course, but for low-income ones as well.
全球化擴展和深化了世代以來提高美國人生活水平的資本躰系的力量，高收入家庭因此受益，儅然，低收入家庭也因此受益。

It might be zero for some people, but it's actually-- it is--the standard rate for people who have not negligible income is 15%.
對某些收益較少的人來說稅率是零,但實際上...,對於大部分投資獲利的人來說,標準稅率是15%
耶魯公開課 - 金融市場課程節選

Recent research shows that the mortgage interest deduction increases homeownership for higher-income households in some areas but not for other households.
FORBES: Capping Itemized Deductions IS Housing Policy
C-corporations are clearly not for every high-income trader, but some many want to consider using one.
FORBES: Post-Fiscal Cliff Tax Tips For Traders
But demand for health care is income-elastic: as people get richer they spend proportionately more on it.
ECONOMIST: The government paints a clearer picture