The Average SSDI Payment in 2018

In 2018, the average Social Security Disability Insurance (SSDI) payment was $1,182 per month. This was the mean amount across all beneficiaries receiving disability benefits that year. The actual payment you would have received depended on your work history and the age at which you became disabled — not on the condition itself.

SSDI payments are based on your Primary Insurance Amount (PIA), which the Social Security Administration calculates from your lifetime earnings record. Two people with the same medical condition could receive very different monthly amounts because their work histories were different. A person who worked for 30 years at higher wages would have a higher PIA than someone who worked fewer years or at lower wages.

The 2018 average of $1,182 masks a wide range. Some beneficiaries received under $800 per month, while others received over $2,000. The lowest possible payment in 2018 was around $368 per month (the minimum benefit for someone with a minimal work history), and the highest was $2,788 per month (the maximum benefit that year).

Key Takeaways

  • SSDI payments in 2018 were based on your work history and earnings record, not on your medical condition or how severe your disability was.
  • The average monthly payment in 2018 was $1,182, but individual payments ranged from approximately $368 to $2,788 depending on your Primary Insurance Amount.
  • Your Primary Insurance Amount was calculated by Social Security using your 35 highest-earning years, adjusted for inflation.
  • Payments were adjusted each year for cost-of-living increases, and the 2018 adjustment was 2 percent over the 2017 amount.

How Social Security Calculated Your 2018 Payment

Social Security used a three-step process to determine your monthly SSDI amount. First, they took your 35 highest-earning years of work (adjusted for inflation to 2017 dollars) and calculated your average monthly earnings. If you had worked fewer than 35 years, they counted zeros for the missing years, which lowered your average.

Second, they applied a formula called the Primary Insurance Amount formula to that average. The formula had three "bend points" — thresholds where the percentage of your earnings counted toward your benefit changed. In 2018, the bend points were $898 and $5,408. You received 90 percent of your average monthly earnings up to $898, then 32 percent of earnings between $898 and $5,408, then 15 percent of earnings above $5,408. This formula meant that lower earners received a higher percentage of their past earnings as a benefit.

Third, Social Security rounded the result down to the nearest dime. This final number was your Primary Insurance Amount, and it remained the basis for your payment throughout 2018 (adjusted only for the annual cost-of-living increase).

The 2018 Cost-of-Living Adjustment

In October 2017, Social Security announced a 2 percent cost-of-living adjustment (COLA) for 2018. This meant that if you received $1,000 per month in 2017, your 2018 payment would be $1,020. The adjustment was applied to all beneficiaries' payments at the same time, on the same schedule.

The COLA is set by law and tied to the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W). It is calculated each October and takes effect the following January. In years when inflation is low or negative, the COLA can be zero or very small. The 2 percent increase in 2018 was modest compared to some years but represented a real increase in purchasing power for beneficiaries.

Payment Amounts for Different Work Histories

Because SSDI is based on your earnings record, not your condition, examples help show the range. A person who worked full-time for 35 years at an average wage of $35,000 per year would have had a much higher Primary Insurance Amount in 2018 than someone who worked part-time or had gaps in employment. Someone who became disabled at age 25 after only five years of work would have had a lower payment than someone who became disabled at 55 after 30 years of work.

The Social Security Administration published no detailed breakdown of 2018 payments by earnings level, but historical data shows that beneficiaries in the lowest earnings quartile received an average of around $700 to $800 per month, while those in the highest quartile received $1,600 to $1,800 per month. The middle 50 percent of beneficiaries clustered around the $1,182 average.

Family Payments and Auxiliary Benefits in 2018

If you received SSDI in 2018, your spouse and children under age 19 (or up to age 19 if still in high school) could also receive payments based on your record. These auxiliary benefits did not reduce your payment but came from the same Social Security trust fund. Each family member typically received 50 percent of your Primary Insurance Amount, though the total family benefit was capped at 150 to 180 percent of your own benefit.

For example, if your Primary Insurance Amount was $1,200 per month, your spouse might receive $600 and each child might receive $600, but the family total would be capped at around $1,800 to $2,160. The exact cap depended on your specific Primary Insurance Amount. These family payments were also adjusted by the 2 percent COLA in 2018.

How 2018 Payments Compare to Other Years

The 2018 average of $1,182 was slightly higher than 2017 (which averaged $1,160 before the COLA adjustment) due to the 2 percent increase. It was lower than 2019 and 2020, when cost-of-living adjustments were higher. In 2019, the COLA was 2.8 percent, and in 2020 it was 1.3 percent, so the average payments in those years were higher in nominal dollars.

Looking backward, the 2018 average was significantly higher than 2010 (when the average was around $1,065) because of cumulative cost-of-living adjustments over the eight-year period. The trend of increasing average payments reflects both inflation adjustments and changes in the composition of the beneficiary population over time.

Frequently Asked Questions

Did everyone with the same disability get the same payment in 2018?

No. SSDI payments are based entirely on your work history and earnings, not on your diagnosis. Two people approved for SSDI with the same condition could receive very different monthly amounts depending on how long they worked and how much they earned.

What if I didn't work for 35 years before becoming disabled?

Social Security counted zeros for the years you didn't work, which lowered your average monthly earnings and your Primary Insurance Amount. The formula still applied, but your benefit was lower than someone with a full 35-year work history at the same earnings level.

Could I find out what my 2018 payment would have been?

If you have a Social Security account, you can view your earnings record and see a benefit estimate. Social Security also mails a statement each year showing your estimated benefits. For 2018 specifically, you would need to contact Social Security directly or review records you kept from that year.

Did the 2 percent COLA in 2018 explore to everyone?

Yes. Every SSDI beneficiary received the same 2 percent increase in January 2018, regardless of their condition, age, or payment amount. The increase was applied uniformly across all beneficiaries.