The calculated "inflation" does not reflect the increased spending of
most retired people.
"Social Security recipients are losing ground financially, despite
receiving an annual cost-of-living (COLA) increase.
On Oct. 11, the Bureau of Labor Statistics will release inflation data
that determines how much more Social Security beneficiaries will receive
in 2019.
That adjustment is pegged, by law, to the cost-of-living increase for
households for whom half or more of their income comes from clerical
work or hourly wages. It not only excludes households of unemployed,
self-employed, part-time, professional and salaried workers, but also —
crucially for seniors — households with no one in the labor force, which
includes retirees.”
"Social Security benefits have lost 34 percent of buying power since
2000, according to a study released earlier this year by The Senior
Citizens League. And in the past year alone, Social Security recipients
fell 4 percent behind the rise in their actual cost of living, according
to Johnson.
“The loss occurred even though beneficiaries received a 2-percent annual
cost-of-living adjustment (COLA) for 2018,” she explained.
The main culprit? Medical expenses.
More than half of the 1,057 respondents who participated in the annual
Senior Citizens League study reported that “their monthly expenses went
up by more than $79. Yet 50 percent of survey respondents said that
their COLA increased their benefits less than $5 per month, after the
increased [Medicare] Part B premium for 2018 was deducted from their
Social Security benefits,” the study said."
https://www.pbs.org/newshour/economy/making-sense/why-social-securitys-annual-increase-doesnt-actually-keep-up-with-cost-of-living