https://www.marketplace.org/2019/01/28/undocumented-immigrants-quietly-pay-billions-social-security-and-receive-no/
If all undocumented immigrants were deported today, next years Social Security trust funds would have approximately $13 billion less for benefit payouts. Its a considerable loss of dollars, especially when its projected that the Social Security funds will be depleted by 2034.
According to New American Economy, undocumented immigrants contributed $13 billion into the Social Security funds in 2016 and $3 billion to Medicare. Three years prior, the Chief Actuary of the Social Security Administration, Stephen Goss, wrote a report that estimated undocumented immigrants contributed $12 billion into Social Security.
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How undocumented immigrants pay into Social Security
Payroll tax, the 12 percent tax taken out of salaried workers paychecks, split between employer and employee, primarily funds Social Security, accounting for 88 percent of the payouts in 2017. Undocumented workers typically use a fake SSN or someone elses SSN when applying for salaried jobs. Only a handful of U.S. states require employers to check an employees eligibility and their SSN through E-Verify, a Department of Homeland Security database. Other states have varying levels of E-Verify requirements, from partial to none.
Undocumented immigrants payments into the Social Security funds become a murkier matter when they are self-employed. By law, anyone earning an income while in the United States is required to pay taxes, even if they are breaking other laws in doing so.
The government, the IRS, will never say no to your tax dollars, said Abigail Zapote, the executive director of the D.C.-based nonprofit Latinos for a Secure Retirement, with a laugh.