First, determine the precise difference by comparing your stub from last year to the stub for this year. That amount may be explained by the one or more of the following:
Did you start having SHARPA healthcare plan provided by Adventist Retirement for retirees, J&S spouse, and children. SHARP-Ex is the specific portion of SHARP dealing with retirees and spouses age 65 and over. deductions this year? If so, this will lessen your gross amount.
Did you ask to have federal taxes withheld? If so, this will lessen your gross amount.
Did you have a spouse pass away or do you have a spouse who started their own retirement benefits? If so, a spouse allowance amount may have been discontinued on your retirement account.
Are you on state medical assistance (Medicaid)? If so, you may have had the Additional CH APS discontinued on your retirement account as medical assistance (Medicaid) covers the Medicare Part B premium.