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2018 Compliance Calendar

2018 Important Dates

2018 Compliance Calendar. The following are important compliance due dates and reminders for 2018. The laws and due dates apply based on the number of employees, whether or not someone does business with the federal government, and on benefits offered. Other state-by-state laws may also apply.

Date Compliance Issue Employer Action
 1/1/2018 Social Security Taxable Limit Increases The maximum amount of earnings subject to the Social Security tax (taxable maximum) has been increased for 2018 from $127,200 to $128,400.


 1/31/2018 Forms W-2 and 1099 due Employers must provide all employees copies of Form W-2 reporting earnings and taxes for 2017 by January 31, 2018. When applicable, employers must provide Forms 1099 to contractors who earned more than $600 in business-related payments in 2017.


2/1/2018 Post OSHA Form 300A 

Employers with more than 10 employees who are not in exempted low-risk industries must post Form 300A, the annual summary of job-related injuries and illnesses, in a workplace common area from February 1 through April 30, 2018. If there were no recordable injuries or illnesses, applicable companies must still post the form with zeroes on the appropriate lines.

 2/28/2018 or  4/2/2018 ACA Forms 1094 and 1095 

Applicable Large Employers must submit Forms 1094 and 1095 to the IRS by February 28, 2018 if submitting paper forms or April 2, 2018 if submitting electronically.

 3/2/2018 1095-C/B Form 

The IRS recently announced they were extending the ACA reporting requirement deadlines for Forms 1095 C/B to employees for all Applicable Large Employers (ALEs) and anyone offering a self-funded plan from Jan. 31 to March 2, 2018. No further extensions will be permitted beyond this revised deadline.

(extended from 9/30/2017
 EEO-1 Report 

Organizations with 100+ employees and organizations with federal government contracts of $50,000 or more and 50+ employees are to submit the 2018 EEO-1 report by March 31, 2018.

 04/30/18 Form 941 

Deadline to file Form 941, employer’s quarterly tax return. Subsequent quarter deadlines are 7/31/2018, and 10/31/2018.

(if on a calendar plan year)
 Summary Plan Description (SPD) 

Employers who offer a health insurance plan must provide SPD’s to all participants within 120 days after a new plan is adopted. SPDs must also be provided to new participants no later than 90 days after the person first becomes covered under the plan.

 7/1/2018 OSHA Form 300 A Accident Summary Posting 


Employers with at least 250 employees (including part-time, seasonal, or temporary workers) in industries covered by the recordkeeping regulation must submit information from their 2017 Form 300A by July 1, 2018. Employers with at least 20 employees but fewer than 250 in certain identified high-hazard industries must submit information from their 2017 Form, 300, and 301 by July 1, 2018.

 7/31/2018 PCORI Fee Due 

July 31, 2018 is the annual deadline for payment of the Patient Centered Outcomes Research Institute fee (PCORI fee). The amount of the PCORI fee is equal to the average number of lives covered during the policy year or plan year multiplied by the applicable dollar amount for the year.

 7/31/2018 (if on a calendar plan year) Form 5500 

Group plans with 100 or more participants must file Form 5500 annually, by the last day of the 7th month following the end of the plan year. Outside of a few exceptions, all group health and retirement plans subject to ERISA are required to file a form 5500 when they have 100+ participants.  If an extension is obtained forms are due by October, 15, 2018.

 9/30/2018 VETS-4212 Report 

Government contractors must submit a VETS-4212 Report no later than September 30.

 10/15/2018 Medicare Part D Notice 

Employers are to provide notice to all Part D eligible individuals, or those about to become eligible, prior to October 15 of each year who is covered by an employer health plan with outpatient prescription drug coverage, regardless of whether the employer coverage is primary or secondary to Medicare. The notice must be provided to all Part D eligible individuals, whether covered as active employees, retirees, COBRA recipients, disabled individuals, or as dependents. Plan participants are Part D eligible if they are 65 or more years old, three months before turning age 65, and/or if they are disabled.

Note: If you provided participants with the all-in-one Employee Notification service provided by HR Service, Inc. this notice was included.

 12/31/2018(if on a calendar plan year)125 Premium Only Plans (POP) & Flexible Spending Account (FSA) non-discrimination testing 

Employers who offer either a 125 POP or Flexible Spending Account must conduct Nondiscrimination testing as of the last day of their plan year to ensure that benefits are available to all eligible employees under the same terms. A good practice is to test the plan after open enrollment is complete and again at the end of the plan year. Early testing allows for modifications in plan design should discrimination testing result in a fail.


 12/31/2018 HIPAA Certification Part 2 

Health plans must certify that its data and information systems are in compliance with applicable standards and operating rules for:

  • health claims or equivalent encounter information
  • enrollment and disenrollment in a health plan
  • health plan premium payments
  • referral certification and authorization
  • health claims attachments


Note: The information and materials herein are provided for general information purposes only and have been taken from sources believed to be reliable, but there is no guarantee as to its accuracy. 

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