Much like the Form W-2 is used to determine whether or not you owe taxes, the IRS will use the information reported on your Form 1095-C to determine whether you (or your employer) may have to pay a penalty for failing to comply with the Affordable Care Act (ACA). The Form 1095-C contains information about your health care coverage that will be helpful when completing your tax return. Think of the form as your “proof of insurance” for the IRS.