彼には安定した収入がある。
He has a stable income.
You need to declare income from side work.
Advertising revenue increased significantly this year.
He has a regular income.
I earn income through a part-time job.
My income increased after changing jobs.
Taxes are determined according to one's income.
I have an income of 300,000 yen a month.
収入 typically describes an individual's or household's income, whereas 収益 is used for businesses, investments, or organizations.
収入 is the general word for income, while 入り appears in compounds like 実入り to describe money earned.
収入 covers any kind of income (salary, investment, etc.), whereas 売上金 is narrowly the money taken in from sales transactions.
収入 is a general word for income earned by a person or organization, while 税収 is limited to a government's tax revenue.
収入 is a broad term for income of any kind or period, while 月収 narrows this down specifically to a monthly figure.
source of income
without income; incomeless