That seems a high rate for making $9/hour.
$9/hr * 2080 hours = $18,720 After deductions that's $6,520 of taxable income. Eligible for EITC so a tax rate of negative $3,526. So if they paid zero federal income tax all year they'd get a "refund" check of $3,526 (except its not a refund, since they paid zero, its a negative tax rate)
You can see here: https://www.calculator.net/tax-calculator.html?cfilestatus=S...
Before or after your tax return?
Is your argument that low-wage and part-time workers are irresponsible and cannot be trusted with large windfalls of money around tax return time, because they will squander them faster than they would if the same amount instead was given to them via biweekly installments?
I agree that many of the people who need to know this don't, though.
Our education system often fails to deliver financial literacy and basic life skills to a large portion of the population, leaving them instead to overwhelmed parents trying to feed their families.