As expected, the Social Security Administration on Thursday announced its biggest annual cost-of-living adjustment (COLA) in more than four decades, with Social Security recipients set to get an 8.7% boost to their 2023 monthly payments.

                By                    Vance Cariaga                

See: September’s Consumer Price Index Shows Inflation Higher Than Expected After Fed Rate HikesSocial Security 2023: How Much Will the COLA Increase Benefits for the Average Senior Couple

The announcement was made following the U.S. Department of Labor’s latest Consumer Price Index (CPI) report, which showed that overall inflation in September rose 8.2% from the previous year.

On average, Social Security benefits will increase by more than $140 a month in 2023, the SSA said. The 8.7% COLA will begin with benefits payable to more than 65 million Social Security beneficiaries in January 2023. Increased payments to more than 7 million SSI beneficiaries will begin on December 30, 2022.

The 2023 COLA is the biggest annual increase since the 11.2% adjustment in 1981. Over the past 40 years, the next highest COLA was this year’s 5.9% bump — only the second time during that span that the COLA rose above 5%.

The 2023 adjustment should go a long way toward helping seniors deal with skyrocketing inflation, said David Freitag, CLU, a financial planning consultant and Social Security expert with MassMutual.

According to research published by Motley Fool, one in five married retired couples and 45% of single retirees depend on Social Security benefits for more than 90% of their income in retirement.

See: With A Recession Looming, Take These 3 Retirement Moves To Stay On Track

This year, seniors have benefited from a COLA formula that has come under criticism in the past. The COLA is based on the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W) rather than the Consumer Price Index for the Elderly (CPI-E).

Many senior advocates say the CPI-E would be a better measurement because it provides a more accurate means of calculating Social Security COLAs, according to the National Committee to Preserve Social Security and Medicare.

But 2022 has been one of the rare years when the CPI-W calculation might work out to the benefit of Social Security recipients.

Discover: 7 Surprisingly Easy Ways To Reach Your Retirement Goals