The phrase "income gains" refers to an increase in the amount of money that someone earns or receives as income. It means the person or group is making more money than before. Full definition
The resulting present values of income gains can be compared directly to current state GDP levels. (educationnext.org)
You may not have 26 years but if you can stay invested in high quality dividend growth companies for 10 - 15 years, you should see some large income gains over time. (ammdividendletter.com)
Other times, it's a systemic artificial rise in home prices crashing the economy and making it difficult for young people to start their careers and see real income gains. (policygenius.com)