The new deadline for 1095-B and 1095-C is now March 4, 2019.
On November 29, 2018, the IRS issued a notice that extends the deadline for insurers and self-insuring employers to furnish ACA-related statements to individuals, and extends good-faith transition relief penalties to the 2018 information-reporting requirements.
The normal deadline of January 31, 2019 for furnishing the 2018 Form 1095-B, Health Coverage, and the 2018 Form 1095-C, Employer-Provided Health Insurance Offer and Coverage, has been extended until March 4, 2019.
This Notice also provides guidance to individuals who, as a result of these extensions, might not receive a Form 1095-B or Form 1095-C by the time they file their 2018 tax returns.
To date the IRS has not penalized employers who submitted incorrect or incomplete 1095-B or 1095-C forms when documentation of a good effort to comply with the reporting requirements could be provided.
Read the full IRS Notice 2016-70 for more details.