WASHINGTON — More than 56 million Americans on Social Security will get raises averaging $19 a month come January, one of the smallest hikes since automatic adjustments for inflation were adopted in 1975, the government announced Tuesday.
Much of the 1.7 percent increase in benefits could get wiped out by higher Medicare premiums, which are deducted from Social Security payments.
At the same time, about 10 million working people who make more than $110,100 will be hit with a tax increase next year because more of their wages will be subject to Social Security taxes.
The cost-of-living adjustment on payments, dubbed COLA, is tied to a government measure of inflation released Tuesday. It confirms that inflation has been relatively low over the past year, despite the recent surge in gasoline prices.
Social Security recipients received a 3.6 percent increase in benefits this year after getting none the previous two years.
‘‘The annual COLA is critically important to the financial security of the  million Americans receiving Social Security benefits today,’’ said Nancy LeaMond, AARP’s executive vice president. ‘‘Amid rising costs for food, utilities, and health care and continued economic uncertainty, the COLA helps millions of older Americans maintain their standard of living, keeping many out of poverty.’’
Social Security payments average $1,131 a month, or $13,572 a year. A 1.7 percent increase amounts to a $19 increase each month, or about $230 a year.