Here's who qualifies for a $1,400 stimulus payment under the American Rescue Plan

While the bill still has to be passed by the Senate and signed by the president before it could take effect, important details about how its benefits would work already have been released.

After those income thresholds, the payments phase out. Individuals earning an AGI over $100,000 per year and couples earning over $200,000 will not receive a check.

Single adults who reported $75,000 or less in adjusted gross income on their 2019 or 2020 tax return would receive the full $1,400 payments, as would heads of household who reported $112,500 or less. Couples filing jointly who earned $150,000 or less in adjusted gross income would receive the full $2,800.

The size of the payment would gradually decrease for those who earned more than those amounts, until it disappeared entirely for higher-income households. Single filers who earned more than $100,000 in adjusted gross income, heads of household who earned more than $150,000, and couples filing jointly with more than $200,000 in income would not receive stimulus payments in the third round.

Altogether, the IRS has disbursed more than $410 billion in so-called Economic Impact Payments, emergency relief to help tide people over during the pandemic, to U.S. households since April. Yet while those checks have been delivered to most eligible individuals, the IRS has struggled to reach some of the most financially vulnerable Americans, such as those who lack bank accounts or who don't earn enough money to file tax returns.

Those issues have complicated stimulus check distribution because the IRS is relying on a person's most recent tax return to determine whether they are eligible for the payments, as well to determine where to send the money.