State ACA Reporting Requirements: A Guide to State Individual Mandates

Last Updated: June 2026

Affordable Care Act (ACA) reporting requirements do not stop at the federal level. A handful of states have passed their own individual mandates, and each one adds a separate reporting obligation on top of the 1094-C and 1095-C forms employers already file with the IRS.

If your business has as little as one employee filing taxes in one of these states, you may be required to comply with that state's reporting rules. For HR and finance teams managing coverage across state lines, that means tracking different forms, different portals, and different deadlines, all at once.

This guide breaks down which states require ACA reporting, what each one expects from employers, and when filings are due. Use the navigation below to jump to your state, or read straight through for the full picture.

What Is a State Individual Mandate?

A state individual mandate is a law that requires residents to maintain qualifying health coverage, often called minimum essential coverage (MEC), or pay a penalty when they file their state income taxes. To make those mandates enforceable, each state also asks employers and other coverage providers to report who was covered during the year.

These mandates exist because of a change at the federal level. When the federal individual mandate penalty was reduced to zero dollars in 2019, several states created their own mandates to keep coverage rates stable in their markets. California, Massachusetts, New Jersey, Rhode Island, and Washington D.C. each followed that path, and each built an employer reporting requirement alongside it.

For employers, the trigger is residency, not headquarters location. If you provide coverage to even one employee who lives in a mandate state, you generally have a reporting obligation there, whether or not your company is based in that state.

State ACA Reporting vs. Federal ACA Reporting

Federal ACA reporting still applies everywhere. Applicable Large Employers (ALEs) continue to file Forms 1094-C and 1095-C with the IRS. Non-ALE employers, who offer a self-insured health care plan, are also required to file 1094-B and 1095-B forms with the IRS. State reporting is an additional, separate step that applies only in mandate states.

The way states collect that information varies, and this is where employers most often get tripped up:

• Some states accept the same federal 1095-C and 1095-B forms you already file with the IRS, simply routed to a state portal. New Jersey, Rhode Island, Washington D.C., and California work this way.
• One state, Massachusetts, uses its own form, the MA 1099-HC, in addition to a separate annual employer filing called the HIRD.

There is also a recent wrinkle worth knowing. A late-2024 federal change now allows employers to furnish Form 1095-C to individuals by request only, rather than mailing it to everyone. That federal relief does not override state rules. California, New Jersey, Washington D.C., and Rhode Island still require employers to furnish forms to residents on the state's schedule, so the federal shortcut does not get you off the hook at the state level.

California's individual mandate took effect January 1, 2020, and requires residents to maintain minimum essential coverage or pay a state penalty. Employers report that coverage to the California Franchise Tax Board (FTB) using the same federal 1094 and 1095 forms they file with the IRS. ALEs file the C-series forms, and self-insured employers of any size file the B-series for their covered California residents.

The state filing deadline is March 31, but California grants an automatic extension to May 31 with no request required, and it does not assess penalties for filings completed by that date. As the largest mandate state by employer base, California is also the one where the electronic filing threshold now matters most: it dropped to 10 returns, so nearly every ALE must file digitally.

Massachusetts runs the oldest state coverage mandate in the country, and it works differently from every other state on this list. Instead of accepting the federal 1095 forms, Massachusetts uses its own form, the MA 1099-HC, which reports minimum creditable coverage (a stricter standard than federal MEC). For fully insured plans, the carrier typically files the 1099-HC. For self-insured plans, the employer is responsible.

Massachusetts also requires a second, separate filing: the Health Insurance Responsibility Disclosure, or HIRD. Any employer with six or more employees in Massachusetts must complete the HIRD each year during the November 15 to December 15 window. Both the 1099-HC and the HIRD are handled through the MassTaxConnect portal.

New Jersey's Health Insurance Market Preservation Act created the state's individual mandate, effective for the 2019 tax year. Employers meet the requirement by filing the same federal 1095-C data (or 1095-B for self-insured coverage) directly with the New Jersey Division of Taxation. The obligation reaches any employer with even one employee who is a New Jersey resident, including part-year residents.

Filing is electronic only, submitted through the Division of Revenue and Enterprise Services (DORES) secure transport system, with no paper option. The state filing deadline is March 31, and New Jersey maintains its own furnishing rule, so residents must receive their forms regardless of the federal furnish-by-request change.

Rhode Island's individual mandate took effect January 1, 2020, and applies to residents, their spouses or domestic partners, and dependents. Employers and carriers that provide coverage to Rhode Island residents report it to the Rhode Island Division of Taxation using the federal 1095-B and 1095-C forms already filed with the IRS.

Rhode Island accepts those federal forms through its Division of Taxation portal, and filing is electronic only. The state filing deadline is March 31, and Rhode Island has aligned its schedule with the federal ACA deadlines on a permanent basis, which makes its timing easier to plan around than it once was.

The District of Columbia individual mandate has been in effect since 2019 and requires most DC residents to carry minimum essential coverage or pay a penalty. Employers and coverage providers report to the DC Office of Tax and Revenue (OTR) using the federal 1094 and 1095-B/C forms.

Washington D.C. stands out in two ways. First, filing is electronic only, submitted in bulk through the MyTax.DC.gov portal, with no paper accepted. Second, D.C. carries the latest deadline of any mandate jurisdiction: reports are due April 30, which is 30 days after the federal filing deadline. Filers who do not already have a MyTax.DC.gov login need to register before they can submit.