Polina Vlasenko, a research fellow at the American Institute for Economic Research, projects the COLA will be between 1.4 percent and 1.6 percent.
Her projection is similar to those done by others, including AARP, which estimates the COLA will be between 1.5 percent and 1.7 percent. The Senior Citizens League estimates it will be about 1.5 percent.
Lower prices for gasoline are helping to fuel low inflation, Vlasenko said.
"In years with high COLA's, a lot of that had to do with fuel prices and in some cases food prices. Neither of those increased much this year," Vlasenko said. "So that kept the lid on the overall increase in prices."
Gasoline prices are down 2.4 percent from a year ago while food prices are up slightly, according to the August inflation report. Housing costs went up 2.3 percent and utilities increased by 3.2 percent.
Advocates for seniors say the government's measure of inflation doesn't accurately reflect price increases older Americans face because they tend to spend more of their income on health care. Medical costs went up less than in previous years but still outpaced other consumer prices, rising 2.5 percent.
"This (COLA) is not enough to keep up with inflation, as it affects seniors," said Max Richtman, who heads the National Committee to Preserve Social Security and Medicare. "There are some things that become cheaper but they are not things that seniors buy. Laptop computers have gone down dramatically but how many people at 70 are buying laptop computers?"
The cost of personal computers dropped by 10.6 percent over the past year, according the CPI-W.
That's a small consolation to Alberta Gaskins of the District of Columbia, who said she is concerned about keeping up with her household bills.
"It is very important to get the COLA because everything else you have in your life is on an upward swing, and if you're on a downward swing, that means your quality of life is going down," said Gaskins, who retired from the Postal Service in 1989.