The 401(k) Service Provider Map: TPA, Recordkeeper, Advisor, Trustee, Custodian, and Auditor
Map common 401(k) service-provider roles, handoffs, and oversight questions so employers can manage the full operating ecosystem.
Topic hub
Form 5500, ERISA, fiduciary duties, and audits
Article library
Original employer education paired with practical planning tools and a clear professional-review path.
55 resources in this topic. Showing the first 24.
Form 5500 for 401(k) Plans: Versions, Deadlines, Extensions, and Sponsor Review
Understand Form 5500 versions, filing workflow, extensions, and a practical sponsor review checklist for 401(k) plans.
Does Your 401(k) Plan Need an Audit? Participant Counts, the 80–120 Rule, and Preparation
Learn how participant counts and the 80–120 rule affect 401(k) audit readiness, plus a sponsor preparation checklist.
401(k) Fiduciary Duties: A Practical Governance Guide for Small and Midsize Employers
For a small or midsize employer, practical 401(k) fiduciary governance means knowing who has discretion, following the plan, monitoring providers, and documenting prudent decisions.
How to Audit Employee Census Data Before Sending It to Your TPA
Audit a census by freezing a dated extract, reconciling control totals to source systems, resolving exceptions, and transmitting an approved version securely.
Who Owns Each Annual 401(k) Task? Sponsor, TPA, Recordkeeper, or Auditor
Learn 401k administration responsibilities with a practical guide for plan sponsors, HR, and finance teams.
401(k) Plan Corrections: SCP, VCP, and Audit CAP Explained
Learn 401k correction programs with a practical guide for plan sponsors, HR, and finance teams.
401(k) Audit Preparation Checklist for Plan Sponsors
401(k) Audit Preparation Checklist for Plan Sponsors: a practical guide for plan sponsors on audit readiness, plan records, reconciliation.
What 401(k) Auditors Test: Eligibility, Contributions, Distributions, and Controls
What 401(k) Auditors Test: Eligibility, Contributions, Distributions, and Controls: a practical guide for plan sponsors on eligibility, contributions, distributions, controls.
How to Reconcile Payroll, Trust, and Recordkeeper Data Before an Audit
How to Reconcile Payroll, Trust, and Recordkeeper Data Before an Audit: a practical guide for plan sponsors on three-way reconciliation, audit readiness, remittances.
401(k) Audit PBC List: Documents to Gather Before Fieldwork
401(k) Audit PBC List: Documents to Gather Before Fieldwork: a practical guide for plan sponsors on PBC list, audit documents, plan administration.
Common 401(k) Audit Findings and How to Prevent Them
Common 401(k) Audit Findings and How to Prevent Them: a practical guide for plan sponsors on late deposits, eligibility, plan controls.
Form 5500 Explained: A Plain-English Guide for Retirement Plan Sponsors
A practical Form 5500 guide for plan sponsors: what the annual return reports, who is accountable, and how to manage filing review.
Who Must File Form 5500—and Which Retirement Plans Are Exempt?
A decision-oriented guide to Form 5500 filing responsibilities, exceptions, and how sponsors can confirm the right treatment.
Form 5500 vs. Form 5500-SF vs. Form 5500-EZ: Which Return Does Your Plan Need?
Compare Form 5500, 5500-SF, and 5500-EZ without shortcuts: plan type, eligibility conditions, and filing route.
Form 5500 Filing Deadline: How to Calculate the Due Date for Any Plan Year
Use a repeatable method to calculate Form 5500 filing deadlines for calendar or fiscal plan years and avoid last-minute errors.
Form 5558 Extensions: How to Get More Time to File Form 5500
A practical Form 5558 extension guide: timing, plan identifiers, one-plan discipline, and records to retain.
Missed the Form 5500 Deadline? A Plan Sponsor’s Immediate Action Plan
A calm, practical response plan for a missed Form 5500 deadline: confirm status, preserve records, file promptly, and review relief.
DFVCP Explained: Reduced Penalties for Late Form 5500 Filers
DFVCP explained for plan sponsors: what the DOL program covers, who may qualify, and the disciplined steps for a late filing.
Form 5500 Late-Filing Penalties: DOL vs. IRS Rules and Relief Options
A plain-English guide to Form 5500 late-filing penalties: distinguish DOL and IRS authority, notices, and relief options.
How to Amend a Form 5500 Filing Without Creating New Errors
How to amend Form 5500 carefully: reconcile the issue, submit a complete replacement filing, and keep clear version-control records.
The Most Common Form 5500 Errors—and How to Catch Them Before Filing
A practical guide to common Form 5500 errors for retirement-plan sponsors, with official-source review steps.
Form 5500 Schedules A, C, D, G, H, I, MEP, R, and SB: A Sponsor’s Map
A practical guide to Form 5500 schedules for retirement-plan sponsors, with official-source review steps.
Form 5500 Participant Counting Rules for Defined Contribution Plans
A practical guide to Form 5500 participant count for retirement-plan sponsors, with official-source review steps.
One-Participant Plans and Form 5500-EZ: Filing Rules for Owners and Spouses
A practical guide to Form 5500-EZ one participant plan for retirement-plan sponsors, with official-source review steps.
Final Form 5500 Filings: What to Do When a Retirement Plan Terminates
A practical guide to final Form 5500 filing for retirement-plan sponsors, with official-source review steps.
Schedule H vs. Schedule I: Financial Reporting for Large and Small Plans
A practical guide to Schedule H vs Schedule I Form 5500 for retirement-plan sponsors, with official-source review steps.
Schedule C Service Provider Reporting: What Plan Sponsors Need to Collect
A practical guide to Form 5500 Schedule C for retirement-plan sponsors, with official-source review steps.
Multiple-Employer Plans, PEPs, and Schedule MEP: Form 5500 Reporting Basics
A practical guide to Schedule MEP Form 5500 for retirement-plan sponsors, with official-source review steps.
ERISA Fiduciary Duties Explained: Loyalty, Prudence, Diversification, and Plan Terms
Understand ERISA fiduciary duties, how they apply to plan decisions, and how sponsors can build a repeatable governance process.
Who Is a Retirement Plan Fiduciary? Functional Roles Every Sponsor Should Review
Learn how retirement plan fiduciary status can arise from functions, not just job titles, and how sponsors can map decision authority.
Can You Outsource Fiduciary Responsibility? What Hiring a TPA or Adviser Does—and Does Not—Change
See what outsourcing retirement plan work can change, what sponsor duties remain, and how to document provider selection and monitoring.
How to Build a Retirement Plan Fiduciary Committee That Actually Works
Build a retirement plan fiduciary committee with clear authority, useful meetings, documented decisions, and practical follow-through.
Fiduciary Meeting Minutes: What to Document and What to Leave Out
Create useful fiduciary committee minutes that document decisions, advice, conflicts, and follow-up without turning into a transcript.
Prudent Retirement Plan Vendor Selection: A Request-for-Proposal Checklist
Use a practical fiduciary RFP checklist to compare retirement plan vendors on services, fees, conflicts, security, and fit.
How Often Should Plan Sponsors Benchmark Retirement Plan Fees and Services?
Learn how to benchmark retirement plan fees and services as an ongoing fiduciary process rather than a one-size-fits-all schedule.
ERISA Prohibited Transactions: Common Sponsor Mistakes and Available Exemptions
Understand common ERISA prohibited-transaction risks, why exemptions matter, and how sponsors can escalate issues for informed review.
Late 401(k) Deposits: Fiduciary Breach, Lost Earnings, and Correction Steps
Address late 401(k) deposits with a fact-based correction workflow covering remittance, lost earnings, documentation, and professional review.
DOL VFCP Explained: Correcting Fiduciary Violations Before an Investigation
The DOL’s Voluntary Fiduciary Correction Program can provide a structured way to restore a plan after certain ERISA violations, but it is not a substitute for investigating the facts and documenting a complete correction.
ERISA Fidelity Bonds vs. Fiduciary Liability Insurance: What’s the Difference?
An ERISA fidelity bond and fiduciary liability insurance address different risks: bonding is intended to protect the plan from loss caused by fraud or dishonesty, while liability coverage is an insurance product that may address claims against fiduciaries subject to its terms.
How Much ERISA Fidelity Bond Coverage Does Your Retirement Plan Need?
The required ERISA fidelity-bond amount is a plan-specific calculation tied to the people who handle plan funds and the amount handled; confirm the current rules and the plan’s facts before relying on a certificate.
Does Your Retirement Plan Need an Audit? Understanding the Participant Threshold
Whether a retirement plan needs an annual audit depends on its Form 5500 filing status, participant count, and available exceptions—not simply on employee headcount or plan assets.
Selecting an Employee Benefit Plan Auditor: Questions Every Sponsor Should Ask
Select an employee benefit plan auditor by testing independence, licensure, plan-audit experience, staffing, scope, and communication—not by price alone.
Preparing for a 401(k) Plan Audit: A Month-by-Month Sponsor Checklist
A smooth 401(k) plan audit is built month by month: reconcile data, preserve evidence, resolve exceptions early, and give the auditor a consistent story across payroll, trust, plan documents, and Form 5500.
ERISA Section 103(a)(3)(C) Audits: What the Certified Investment Information Election Means
An ERISA section 103(a)(3)(C) audit election can limit certain audit procedures over certified investment information, but it does not eliminate the audit or the plan administrator’s responsibility for the Form 5500.
What Happens When a Plan Audit Is Late, Incomplete, or Deficient?
Address a late, incomplete, or deficient benefit plan audit with a documented recovery plan, Form 5500 coordination, and fiduciary oversight.
Summary Annual Report Deadlines: How the Form 5500 Extension Affects Participant Delivery
See how a Form 5500 extension can affect summary annual report delivery, plus practical controls for preparation, recipients, and proof of delivery.
QDIA Notices: Timing and Content for Default Investment Fiduciary Relief
Learn the notice, participant-choice, investment, and monitoring controls that support a QDIA process without treating fiduciary relief as automatic.
Electronic Delivery of ERISA Disclosures: A Practical Guide to DOL Safe Harbors
Use a practical control framework for electronic ERISA disclosures, including addresses, notice-and-access, paper rights, invalid addresses, and delivery evidence.
How to Audit Employee Deferral Elections Against Payroll Deductions
Practical guidance for how to audit employee deferral elections against payroll deductions, including controls, records, and review steps.
TPA vs. 3(16) Fiduciary: How Much Responsibility Are You Really Delegating?
Compare TPA vs 3(16) fiduciary service models, responsibilities, questions, and review steps for an informed employer decision.
How to Choose a 401(k) Advisor: Fiduciary Status, Fees, and Fit
Use a structured due-diligence process to choose a 401(k) advisor by fiduciary role, compensation, service model, and committee fit.
3(21) vs. 3(38) Investment Fiduciary: Which Advisor Model Fits Your Plan?
Compare 3(21) and 3(38) investment fiduciary models by authority, monitoring, documentation, and the responsibilities a plan committee retains.
Final Form 5500 After Plan Termination: When the Filing Obligation Ends
Learn how to manage final Form 5500 plan termination with a documented sponsor workflow, participant-focused controls, and a practical review checklist.
SCP, VCP, or Audit CAP? Choosing the Right Retirement Plan Correction Path
Compare SCP, VCP, and Audit CAP for retirement plan corrections. Learn how to classify the failure, evaluate timing, and organize a response.