Independent ERISA fiduciary since 19973(16) & 402(a) — we sign and file your Form 5500No products sold, no commissionsTalk to us: (361) 271-1211

401(k) Administration Services

Most 401(k) administration services stop at preparing the work and handing it back for your signature. Admin316 performs the administration and accepts the role, so the plan is not waiting on someone in HR to approve a distribution correctly.

We don’t just advise the plan. We take responsibility.
Admin316 · 402(a) Named Fiduciary · 3(16) Plan Administrator

What is included

Eligibility and enrollment

Tracking hours, entry dates and long-term part-time employees against the plan document, and issuing enrollment and auto-enrollment notices on the statutory schedule.

Contributions and payroll integration

Reconciling deferrals, match, profit sharing and true-ups to payroll each cycle, and monitoring deposit timing so late-deferral exposure is caught in days, not at year end.

Distributions, loans, hardships and QDROs

Reviewed and approved under the plan’s terms and claims procedure, including rollovers, RMDs, force-outs and beneficiary claims.

Compliance testing and government filings

ADP/ACP, 402(g), 415, coverage and top-heavy testing, plus the Form 5500 and Summary Annual Report — signed and filed by Admin316 as plan administrator.

Plan document and notice management

Restatements, amendments, SPDs and the full participant notice calendar tracked and delivered, with an evidence trail for each.

Why administration services and fiduciary status are different purchases

Services alone leave the duty with you

A TPA or recordkeeper contract almost always disclaims fiduciary status. You are buying labor while the legal responsibility, and the signature, stay with your company.

Admin316 is appointed, not just engaged

We are named in the plan document as 3(16) plan administrator and, where you choose, 402(a) named fiduciary. Same administration work, materially different risk position.

Your recordkeeper and advisor stay

We sell no investment products and take no commissions, so nothing about your investment lineup or advisor relationship has to change.

Signs your current 401(k) administration is not working

Deposits are timed by whoever remembers

If nobody can show the date each payroll’s deferrals reached the trust, late-deposit exposure is already building.

Notices go out when the recordkeeper reminds you

Safe harbor, QDIA, automatic enrollment and fee disclosure notices each have their own timing rules. A missed safe harbor notice can undo the safe harbor for the year.

HR is approving distributions

Every hardship, loan and distribution approval is a fiduciary decision. If it is being made by someone without the plan document in front of them, errors are a matter of time.

The Form 5500 arrives for signature with no explanation

Whoever signs is attesting to its accuracy under penalty of perjury. Signing a return you have not reviewed is a common way owners end up personally exposed.

Part-time employees are not being tracked

Under SECURE 2.0, employees with 500 or more hours in two consecutive years must be allowed to defer. Hours tracking is now part of administration, not just payroll.

How a takeover works

Weeks 1 to 2: review

We read the plan document, adoption agreement, prior Form 5500s and testing, and list any operational errors that need correcting before or during the transition.

Weeks 2 to 4: appointment and data

The plan is amended to appoint Admin316 as 3(16) plan administrator, and payroll, census and recordkeeper data feeds are mapped and tested.

Weeks 4 to 8: cutover

Distribution approvals, notices, deposit monitoring and the compliance calendar move to us. Your recordkeeper and advisor remain in place throughout.

Frequently asked questions

What do 401(k) administration services cover?

Eligibility and enrollment, contribution processing and reconciliation, distributions and loans, participant notices, compliance testing, plan document maintenance and the annual Form 5500.

Are administration services the same as recordkeeping?

No. A recordkeeper maintains participant accounts and the investment platform. Administration is the ERISA plan administrator function: applying the plan document, testing, notices and the government filing.

How much do 401(k) administration services cost?

Pricing depends on participant count and plan complexity. In the plan reviews we run, consolidating duplicated provider services into a bundled 3(16) arrangement typically lands between a 32% and 65% reduction against the current fee lineup.

Can you take over administration mid-year?

Yes. A typical transition runs 30 to 60 days — document and appointment review, payroll and census mapping, then a cutover of notices and filings.

Who are the largest 401(k) administrators?

The largest names are mostly recordkeepers, which hold accounts and run the investment platform. Fiduciary administration is a different service, and many plans on large recordkeepers still have the employer acting as plan administrator.

Do small businesses need 401(k) administration services?

Yes. A five-person plan has the same notice, deposit, testing and filing duties as a 500-person plan, and a small business usually has no one whose job is to track them.

Related pages

We don’t just advise the plan. We take responsibility.
Admin316 · 402(a) Named Fiduciary · 3(16) Plan Administrator
Not sure if you’re carrying fiduciary risk you don’t need to?Call (361) 271-1211Book a 15-min 3(16) fit check

Step 1 of 2 — Your name and phone

Tell us who to prepare the review for, then we’ll grab a few plan details.

For Plan Sponsors, CEOs, Business Owners & HR Professionals. Company retirement plans only.
Admin316 Retirement Administration · 4639 Corona Dr #26, Corpus Christi, TX 78411 · (361) 271-1211 · Mon–Fri 8:00 a.m.–5:00 p.m. Central · Independent ERISA fiduciary since 1997