Recently, the Social Security Administration issued a press release announcing its revision of the maximum amount of earnings subject to Social Security tax for 2018 from $128,700, as announced on October 13, 2017, to $128,400.

The Social Security Administration indicated that the lowering of the 2018 cost-of-living adjustment to the Social Security wage base was a result of corrected W2 data it received from a national payroll service provider in late October.

A detailed listing of the 2018 limits is provided below:

Plan Limits	2018	2017	2016
401(k)/403(b) Deferrals	$18,500	$18,000	$18,000
401(k)/403(b) Catch Up	$6,000	$6,000	$6,000
SIMPLE Deferrals	$12,500	$12,500	$12,500
SIMPLE Plan Catch Up	$3,000	$3,000	$3,000
457 Deferrals	$18,500	$18,000	$18,000
IRA	$5,500	$5,500	$5,500
IRA Catch Up	$1,000	$1,000	$1,000
Defined Contribution	$55,000*	$54,000	$53,000
Defined Benefit	$220,000*	$215,000	$210,000
Includible Compensation	$275,000*	$270,000	$265,000
Tax Credit ESOP Maximum Balance	$1,105,000*	$1,080,000	$1,070,000
Social Security Taxable Wage Base	$128,400*	$127,200	$118,500
SEP Min. Participation Threshold	$600	$600	$600
SEP Maximum Participation Threshold	$275,000*	$270,000	$265,000
Key Employee	$175,000	$175,000	$170,000
Highly Compensated Employee	$120,000	$120,000	$120,000
Maximum Monthly Social Security	$2,788*	$2,687	$2,639
HSA Individual Contribution	$3,450*	$3,400	$3,350
HSA Family Contribution	$6,850*	$6,750	$6,750
HDHP Minimum Individual Deductible	$1,350*	$1,300	$1,300
HDHP Minimum Family Deductible	$2,700*	$2,600	$2,600
Monthly Transit/Van Pooling	$260*	$255	$255
Monthly Qualified Parking	$260*	$255	$250
FSA Maximum Deferral	$2,650*	$2,600	$2,550
FSA Dependent Care Max. Deferral	$5,000	$5,000	$5,000

* Indicates a change from 2017 to 2018.

Download the 2018 IRS Plan Limits here (PDF).