Does benefits software integrate with payroll and handle carrier feeds (EDI 834), ACA, and COBRA compliance?

Four separate capabilities sit behind that one question, and a vendor can answer yes to all four while meaning something different by each. Payroll integration moves demographic, deduction, and employer contribution values between the two systems, usually through an API [11]. A carrier feed sends enrollment data to insurers in the ASC X12N 834 format that federal regulation adopted for enrollment and disenrollment in a health plan [5]. ACA support covers tracking who counts as full time, producing Forms 1095-C and 1094-C, and transmitting them to the IRS [2]. COBRA administration runs a notice and premium process on deadlines fixed in statute [6][8], often through an outside firm rather than the platform itself [12].

What each capability asks of you

Every mainstream platform sells all four, so the useful question is what each asks of you. Payroll sync is accurate only when every plan maps to the correct deduction code, a carrier feed is a separate build priced per carrier [10], and a COBRA notice clock runs in days rather than weeks [8].

Where the work still lands on your side

You remain the filer, the plan sponsor, and the party the carrier bills. IRS instructions place the filing duty on each applicable large employer member [2], Employee Navigator states that sending data to a carrier requires users to set up, manage, and monitor the transmissions [9], and most failures surface in a carrier invoice or a payroll register rather than in an alert inside the platform.

Three connection types cover almost every case, and they fail differently. A native module keeps benefits and payroll in one database, so an election changes the deduction with no file transfer. A certified connector is a maintained API link between two vendors, which is how Employee Navigator describes its payroll integrations: demographic, deduction, and employer contribution data syncing with payroll providers in real time [11]. A flat file exchange over SFTP is the fallback where no connector exists, and it needs a named owner because nothing about it fails loudly.

Deduction code mapping decides whether paychecks are right

Deduction codes cause most first month errors, because the benefits system sends a contribution tied to its own plan identifier and payroll applies whatever code that identifier maps to, so a plan pointed at the wrong code is quietly wrong for everyone enrolled in it. Ask for the mapping table before go live, then reconcile the first three pay runs against enrollment records.

What tends to break in the first month

Two way syncs raise the question of which system wins when both change the same field on the same day, and sync timing decides how long a wrong value survives for someone who enrolls just before payroll closes. Mid period elections, retroactive corrections, and deduction arrears cause most of the cleanup. An election entered after the pay run closes produces a missed deduction recovered later, and platforms differ in whether they build that catch up automatically. Deduction frequency adds another layer, because a semimonthly payroll takes 24 deductions a year and a biweekly payroll takes 26, so the same monthly premium divides differently for each population.

An 834 is the X12 transaction for benefit enrollment and maintenance, and federal regulation adopted ASC X12N version 005010X220 as the sole standard for enrollment and disenrollment in a health plan from January 1, 2012 [5]. The file tells a carrier who is enrolled, in which plan, at what tier, and effective when, with INS carrying the maintenance type code for add, change, terminate, or reinstate, HD the coverage line, and DTP the effective dates [13].

Every carrier is its own project

Build and testing run per carrier, typically three to twelve weeks from kickoff to go live depending on carrier responsiveness and companion guide complexity [13]. That guide is the carrier's own document setting which fields it requires and how it expects them populated, which is why a feed built for one carrier cannot be reused for the next.

Group size and fees

Carriers add commercial conditions on top of the standard. Employee Navigator states that HIPAA legally requires carriers to accept the standard data format for companies with 2 or more employees and cannot charge a fee to do so, while some carriers require at least 100 employees to use their EDI services, which it notes is not a legal requirement [9]. Platform fees are separate: a one time $750 fee per new carrier and $0.45 per employee per month for production files [10].

Scope is narrower than most buyers expect

Employee Navigator supports full ANSI 834 files for medical, dental, vision, and prescription plans only, and excludes HSA enrollments and change only files [9]. Full file mode overwrites what the carrier holds each cycle, while change only mode sends the delta, so a backdated correction may never reach the carrier unless someone re-sends it.

A clean acknowledgment is not proof of enrollment

A 999 acknowledgment confirms that a file was syntactically valid rather than that anyone was enrolled, so a wrong maintenance type code can clear validation while the carrier applies the wrong action to the member record [13]. Employee Navigator states that users monitor the transmissions themselves [9]. The control that catches it is a monthly comparison of the carrier invoice against your own enrollment data, and one reconciliation vendor puts about 5 percent of monthly premium spend as inaccurate [14].

ACA modules measure hours to identify full-time employees, generate Forms 1095-C and 1094-C, and transmit them electronically to the IRS. Whether you are in scope is a count you own: an employer is an applicable large employer if it averaged at least 50 full-time employees, including full-time equivalents, during the prior calendar year, where a full-time employee averages at least 30 hours of service per week or 130 hours in a calendar month and related companies under section 414 are combined [1].

Electronic filing now catches small filers

The 10 return rule pulled small employers into electronic filing. IRS instructions state that if you are required to file 10 or more information returns during the year you must file the forms electronically [2], and the Affordable Care Act Information Returns page repeats that threshold and requires a new filer to apply for a Transmitter Control Code [3]. The count works in aggregate across return types, so a handful of Forms 1095-C plus W-2s and 1099s can cross it.

The dates attached to the 2025 forms

Statements for 2025 are due to employees by March 2, 2026, and the returns are due to the IRS by March 2, 2026 on paper or March 31, 2026 electronically [2]. An employer using the alternative furnishing method posts a clear, conspicuous, and accessible website notice by March 2, 2026, keeps it there through October 15, 2026, and furnishes a statement within 30 days of a request [2].

Affordability is a calculation you configure

The required contribution percentage under section 36B(c)(2)(C)(i)(II) is 9.96 percent for plan years beginning in calendar year 2026, set by Revenue Procedure 2025-25 [4]. Software applies whichever safe harbor you select, using Form W-2 wages, rate of pay, or the federal poverty line, and reports it in the line 16 codes [2]. You choose the safe harbor and set the lowest cost self only contribution so it clears the test.

The filing obligation does not transfer

Each applicable large employer member files a Form 1095-C for its full-time employees with the Form 1094-C transmittal [1][2], and a vendor transmitting on your behalf does not change whose return it is. This is general information about published requirements rather than legal or tax advice.

COBRA runs on statutory clocks, and many benefits platforms trigger them rather than administer them. Employee Navigator states that its integrated third party administrators automatically receive notification of loss of coverage events, and that TPAs are used by most employers to notify employees of their rights and to collect premiums from those who continue coverage [12].

The events and the clocks

Qualifying events include the death of the covered employee, termination other than for gross misconduct or a reduction of hours, divorce or legal separation, entitlement to Medicare benefits, a dependent child ceasing to qualify under the plan, and an employer bankruptcy affecting retirees [6]. The employer notifies the plan administrator of a death, termination, reduction of hours, or bankruptcy within 30 days, while the covered employee or beneficiary reports a divorce, legal separation, or loss of dependent status within 60 days [7]. The administrator then has 14 days after receiving that notice to furnish the election notice, or 44 days where the employer is also the plan administrator [8].

Election and payment mechanics

The election period runs at least 60 days and cannot end earlier than 60 days after the later of the loss of coverage or the date of the notice [6]. No premium can be required before the day that is 45 days after the initial election, and later payments count as timely within 30 days after the date due [6]. Premiums are capped at 102 percent of the applicable premium, rising to 150 percent for the disability extension months, and coverage runs up to 18 months after a termination or reduction of hours, 29 months with a disability determination, and 36 months for other events [6].

What to confirm before you rely on it

Ask which entity drafts and sends the election notice and how a qualifying event reaches it, since premium collection, remittance, and reinstatement after a late payment are separate services a benefits platform may not perform. This summarizes published requirements and is general information rather than legal advice.

Failures cluster in the gaps between systems and surface weeks later in money rather than in error messages.

Arrears after a late election

A deduction missed because the election arrived after payroll closed has to be recovered from later checks, and the recovery schedule is a policy decision rather than a system setting.

Terminations that wait for a batch

A termination starts a payroll event and a COBRA clock at once, and the administrator has 14 days after notice to furnish the election notice, or 44 where the employer administers the plan [8]. Weekly batching spends much of that window.

Invoices nobody reconciles

Carrier invoice errors persist because each one looks small, and a reconciliation vendor reports roughly 5 percent of monthly premium spend as inaccurate [14]. They surface only when someone compares the invoice against enrollment records.

ACA data that inherits payroll errors

Hour tracking, employment status, and offer history feed the 1095-C, so a mis-mapped status code produces a form that files cleanly and reports the wrong offer [2].

Ask questions that force a specific answer about a specific connection, since every platform can say yes to the general version.

1. Which of my carriers already have a built feed, by name, and what each new one costs. Preconfigured carriers are reusable at no extra cost, while a new build carries a fee such as Employee Navigator's one time $750 charge plus $0.45 per employee per month [10].
2. Full file or change only, per carrier. The mode governs retroactive corrections, and some platforms exclude change only files and HSA enrollments [9].
3. Who monitors transmissions and fixes a failed file. Self managed monitoring [9] is a different service level from a managed feed.
4. The payroll deduction mapping document. Request it before signature and check it against a live export [11].
5. Whether the ACA module e-files or only prints. Filing is electronic at 10 or more information returns, and a new filer needs a Transmitter Control Code [3].
6. Which entity is named as transmitter. The obligation stays with the employer regardless of who transmits [1][2].
7. Who performs COBRA. Many platforms pass qualifying events to a third party administrator that sends notices and collects premiums [12], so get that firm's name and turnaround in writing.
8. What the implementation calendar looks like. Carrier feeds commonly take three to twelve weeks each [13], which decides whether a January 1 effective date is realistic.

Attach the answers to the agreement, since verbal integration promises are hardest to enforce once implementation is underway.