The Affordable Care Act contains several tax provisions that affect employers. Under the ACA, the size and structure of a workforce – small, or large – helps determine which parts of the law apply to which employers.

The number of employees an employer had during the prior year determines whether it is an applicable large employer for the current year. This is important because two provisions of the Affordable Care Act apply only to applicable large employers. These are the employer shared responsibility provision and the employer information reporting provisions for offers of minimum essential coverage.

An employer's size is determined by the number of its employees.

  • An employer with 50 or more full–time employees or full–time equivalents is considered an applicable large employer – also known as an ALE – under the ACA.
  • For purposes of the employer shared responsibility provision, the number of employees a business had during the prior year determines whether it is an ALE the current year. Employers make this calculation by averaging the number of employees they had throughout the year, which takes into account workforce fluctuations many employers experience.
  • Employers with fewer than 50 full–time or full–time equivalent employees are not applicable large employers.
  • Calculating the number of employees is especially important for employers that have close to 50 employees or whose work force fluctuates during the year.

To determine its workforce size for a year, an employer adds the total number of full–time employees for each month of the prior calendar year to the total number of full–time equivalent employees for each calendar month of the prior calendar year. The employer then divides that combined total by 12.

For more information, visit our Determining if an Employer is an Applicable Large Employer page on IRS.gov/aca.

Learn more about Affordable Care Act tax law changes for small businesses at www.HealthcareACT.com, powered by TaxAct.

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Upcoming Tax Dates

June 10 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the first 15 days of May.

June 12 — Employees who work for tips
If you received $20 or more in tips during May, report them to your employer Details

June 14 — Regular method taxes
Deposit the tax for the last 16 days of May.

June 15 — Individuals
If you are a U.S. citizen or resident alien living and working (or on military duty) outside the United States and Puerto Rico, file Form 1040 and pay any tax, interest, and penalties due. If you want additional time to file your return, file Form 4868 to obtain 4 additional months to file Details

June 15 — Individuals
Make a payment of your 2017 estimated tax if you are not paying your income tax for the year through withholding (or will not pay in enough tax that way). Use Form 1040-ES. This is the second installment Details

June 15 — Corporations
Deposit the second installment of estimated income tax for 2017 Details

June 15 — Social security, Medicare, and withheld income tax
If the monthly deposit rule applies, deposit the tax for payments in May

June 15 — Nonpayroll withholding
If the monthly deposit rule applies, deposit the tax for payments in May.

June 27 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the first 16 days of May.

June 29 — Regular method taxes
Deposit the tax for the first 15 days of June.

June 30 — Wagering tax
File Form 730 and pay the tax on wagers accepted during May.

June 30 — Floor stocks tax for ozone depleting chemicals
(IRS No. 20). Deposit the tax for January 1, 2017.

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