The size of the check will decrease based on income for individuals who earned more than $75,000 based on their federal tax return for 2019 (or their 2018 return if they have not filed yet). The payment for individuals will shrink by $5 for every $100 earned over $75,000. For couples who filed jointly, the reduction will start once they earn more than $150,000; for heads of household, at $112,500.