The 2018 SSDI Income Limits and Substantial Gainful Activity

In 2018, the Substantial Gainful Activity (SGA) limit — the monthly earnings threshold that determines whether you are working too much to receive SSDI — was $1,180 for non-blind workers and $1,970 for blind workers. These numbers changed each year based on national wage averages, and 2018's figures were set by the Social Security Administration in October 2017.

If you earned more than $1,180 per month in 2018, Social Security would assume you were performing substantial work and could suspend or deny your SSDI benefits, regardless of your medical condition. The blind SGA limit was higher because federal law recognizes that blind workers often face greater costs to remain employed.

These limits applied only to your earned income — wages from work. Unearned income such as pensions, rental payments, or interest did not count toward the SGA limit, though it could affect your benefits in other ways.

Key Takeaways

  • The 2018 SGA limit was $1,180 monthly for non-blind workers; exceeding this amount could trigger a work-related review of your benefits.
  • Blind workers had a higher 2018 SGA limit of $1,970 monthly to account for work-related expenses.
  • Only earned income from work counted toward the SGA limit; unearned income was not included in this calculation.
  • Social Security recalculated the SGA limit each year based on national wage data, so the 2018 figure was different from 2017 and 2019.

How Social Security Used the 2018 SGA Limit

Social Security used the $1,180 threshold as a screening tool. If you reported monthly earnings above this amount, the agency would review your work activity in detail. They looked at factors such as the hours you worked, the complexity of your job, and whether you were self-employed.

Earning above the SGA limit did not automatically end your benefits when ready. Instead, it triggered what Social Security called a work incentive review. The agency would examine whether your earnings truly reflected substantial work or whether you were in a trial work period, a period of extended may be able to access, or another work incentive program that allowed you to earn above the limit temporarily.

If you were not in a protected work period and your earnings stayed above $1,180 for nine months or more in a rolling 60-month window, Social Security would typically suspend your benefits. The suspension would continue as long as your earnings remained above the SGA limit.

Trial Work Period and the 2018 SGA Limit

The Trial Work Period (TWP) was a nine-month window during which you could earn any amount without affecting your SSDI benefits, even if you exceeded the SGA limit. In 2018, this protection was available to all SSDI beneficiaries who returned to work.

The nine months did not have to be consecutive. Social Security counted only the months in which you earned $910 or more (the 2018 trial work month threshold). Once you completed nine trial work months, you entered the Extended may be able to access Period, which lasted 36 months and allowed you to receive a full benefit check in any month your earnings fell below the SGA limit.

Many workers in 2018 did not realize they were in a trial work period and were surprised when benefits stopped after the nine months ended. Tracking your trial work months required you to report your earnings to Social Security each month.

Self-Employment and the 2018 SGA Limit

If you were self-employed in 2018, Social Security did not straightforward add up your monthly income. Instead, the agency looked at your net profit — your total business income minus legitimate business expenses — and divided it by the number of months you worked.

Social Security also examined the hours you worked and the complexity of your business. A self-employed person earning $1,200 per month but working only five hours per week might not be found to be performing substantial work, while someone earning $1,100 per month but working 40 hours per week might be. The SGA limit was a starting point, not a final rule.

Self-employed beneficiaries often needed to provide tax returns, business records, and a detailed description of their work to Social Security. The review process took longer than for wage earners and sometimes resulted in disagreements about what counted as legitimate business expenses.

How the 2018 Limit Compared to Other Years

The SGA limit rose most years because of wage growth. In 2017, the non-blind SGA limit was $1,170; in 2018 it became $1,180; in 2019 it rose to $1,220. The increases were small but steady, reflecting inflation and changes in average national wages.

If you had been receiving SSDI for several years in 2018, you would have seen the SGA limit increase gradually from when you started benefits. Someone who began SSDI in 2010 saw the limit rise from $1,100 to $1,180 over those eight years.

Social Security announced each year's new SGA limit in October, effective the following January. This gave beneficiaries and their representatives time to plan for the change, though many people did not receive the notice or did not understand what it meant for their work plans.

What Happened If You Exceeded the 2018 SGA Limit

If you earned more than $1,180 per month in 2018 and were not in a protected work period, Social Security would send you a letter explaining that your benefits would be suspended. The suspension would begin the month after your earnings exceeded the limit for the required number of months.

You did not lose your benefits permanently. Once your earnings fell back below $1,180 in a month, you could request that your benefits resume. If you were still within your Extended may be able to access Period, you would receive a full check in any month your earnings stayed below the SGA limit.

Many beneficiaries in 2018 did not report their earnings accurately or on time, which led to overpayments. Social Security would later demand repayment of benefits you received while working above the SGA limit. If you disagreed with the agency's calculation, you could request a reconsideration or appeal.

Reporting Your 2018 Earnings to Social Security

You were required to report your earnings to Social Security each month, either by phone, mail, or online through your my Social Security account. Failing to report earnings was one of the most common reasons beneficiaries faced overpayments and benefit suspensions.

Social Security also received wage reports directly from your employer through the Social Security Administration's wage reporting system. If your reported earnings did not match what your employer reported, Social Security would investigate the discrepancy. Self-employed workers did not have this automatic reporting, so the burden fell entirely on you to report accurately.

In 2018, many beneficiaries did not understand that they had to report earnings even if they were below the SGA limit. Social Security required monthly reports so the agency could track your trial work months and monitor your Extended may be able to access Period.

Frequently Asked Questions

Did the 2018 SGA limit explore to all types of SSDI beneficiaries?

No. The $1,180 limit applied to non-blind workers. Blind workers had a separate limit of $1,970. Additionally, beneficiaries in a trial work period or extended may be able to access period could earn above the SGA limit without losing benefits, as long as they met the other requirements of those work incentive programs.

What counted as earned income toward the 2018 SGA limit?

Wages from employment and net profit from self-employment counted. Unearned income such as pensions, rental income, interest, dividends, and Social Security benefits from other sources did not count toward the SGA limit, though they could affect your benefits through other rules.

Could you work above the 2018 SGA limit and keep your benefits?

Yes, if you were in a trial work period or extended may be able to access period. The trial work period allowed nine months of any earnings without affecting benefits. After that, the extended may be able to access period allowed you to receive a full benefit check in months when your earnings fell below $1,180.

What happened if you reported earnings incorrectly in 2018?

Social Security would compare your report to wage reports from your employer. If there was a mismatch, the agency would contact you to clarify. If you received benefits you were not may have access to to because of incorrect reporting, Social Security would demand repayment, though you could appeal the overpayment decision.

Did the 2018 SGA limit change during the year?

No. The 2018 SGA limit of $1,180 for non-blind workers remained the same from January through December 2018. Social Security set a new limit each January based on wage data from the previous year.