An expansive study published in Nature Human Behavior Journal, that included a sample of 1.7 million people, concluded:
“In America, for daily emotional well-being, the sweet spot is an annual income of $65,000-$95,000, and for long-term satisfaction that number is $105,000”
More importantly:
“People were likely to see decreased happiness if they achieved more than the optimal income for long-term satisfaction, partially due to a phenomenon described as the “hedonic treadmill”, in which people adjust to increases in income.”
Wissam Charafeddine 