Free Download
The 2026 Plan Sponsor Fiduciary Guide
A 19-page working guide for plan sponsors: ERISA fiduciary fundamentals, DOL duties, the 10 most common plan deficiencies, the annual compliance calendar, a fiduciary responsibility matrix worksheet, a governance self-check, and correction programs. Written from Admin316’s seat as your ERISA §402(a) Named Fiduciary and §3(16) Plan Administrator.
Download the Guide (PDF)Educational only — not legal, tax, or investment advice. No fiduciary or client relationship is created by downloading this guide.
401(k) & Retirement Plan Resource Library
Every Admin316 guide on ERISA fiduciary duties, 401(k) administration, defined benefit and cash balance plans, and retirement income planning — organized in one place. Admin316 is an appointed ERISA 3(16) plan administrator and 402(a) named fiduciary; we sign and file Form 5500 for the plans we serve.
Fiduciary Duties & ERISA Compliance
- Retirement Plan Administration Partner
- Retirement Plan Audit Support
- ERISA Plan Administrator Services
- 401(k) Administration Services
- Retirement Plan Governance
- 401(k) Document Retention Checklist (2026)
- 401(k) Fee Disclosure Requirements Guide
- 401(k) Plan Audit Requirements Guide
- APIs for Streamlined 316 Fiduciary Operations
- ERISA Compliance Challenges Every Plan Sponsor Must Fix
- ERISA Compliance Checklist for Plan Sponsors
- ERISA Fiduciary Compliance Services | Protect Your Plan
- Fiduciary Risk for Employers | ERISA Compliance Guide
- How 3(16) Fiduciary Services Protect Your Plan Assets
- Mastering Retirement Plan Governance: Best Practices Guide
- Retirement Plan Fiduciary Services: What They Matter
- The Ethical Considerations of 316 Fiduciary Services
- Understanding Fiduciary Duties Employer Guide
401(k) Administration, Fees & Operations
- 401(h) Plan Vesting Schedule | How Employer Benefits Work
- 401(h) vs Traditional 401(k): Key Differences Explained
- 401(k) Administrative Error Correction: A Guide for Sponsors
- 401(k) Matching Explained: How to Maximize Benefits
- 401k Administration Outsourcing: 2026 Benefits Guide
- Average 401(k) Administration Fees: Sponsor Benchmarks 2026
- Average Cost to Manage Retirement Funds Explained
- How to Choose a 401(k) Plan Administrator: Complete Guide
- Key Employee Definition 401(k): IRS Guidelines Explained
- Largest 401(k) Administrators Compared (2026 Sponsor Guide)
- Retirement Plan FAQs & Fiduciary Answers
- Solo 401(k) Costs: Full Fee Breakdown for 2026
Defined Benefit & Cash Balance Plans
- Cash Balance Pension Plans: Pros, Cons & Rules
- Cash Balance Retirement Plans in 2026: Rules & Limits
- Cash Balance Scheme: Benefits, Rules & Retirement Planning
- Cash Benefit Pension Plan: Benefits and Drawbacks
- Contributory Defined Benefit Plan: Guide to Retirement Plans
- Defined Benefit Actuary: Role, Benefits & Why You Need One
- Defined Benefit Pension Payout Options: 8 Types Explained
- Defined Benefit Plan Actuary: Role & When Sponsors Need One
- Defined Benefit Plan Calculation Examples
- Defined Benefit Plan Calculation: Formulas & Employer Examples
- Defined Benefit vs Defined Contribution Plans Explained
- Frozen Defined Benefit Plans: Sponsor Duties
- Hybrid Pension Plans: Employer Benefits, Types & Risks
- Private Pension Definition: Types, Features & Benefits
Retirement Income, Withdrawals & Investing
- 10 Best Roth IRA Managers for 2025 Compared
- 401(k) Balance at Retirement: Benchmarks by Age
- 401(k) Withdrawal Strategy to Make Retirement Savings Last
- 8 Best Retirement Strategies for Financial Security
- Best Strategy for RMD Withdrawals: 7 Tax-Saving Tips
- How to Adjust Your Asset Allocation Before Retirement
- How to Use the Social Security Bridge Strategy Effectively
- How to Vet a Trusted Wealth Advisor in 2026
- IRA Management Companies: How to Choose One
- Retirement Asset Allocation: Choosing Your Mix
- Retirement Bridge Strategy: Delay Social Security Wisely
- Retirement Contributions Tax Benefits & Deductions
- Retirement Health: 9 Tips to Manage Rising Healthcare Costs
- Retirement Income | What It Means and Where It Comes From
- Retirement Plan Compliance Outsourcing Guide 2026
- Roth IRA Strategy: How to Maximize Returns
- Suggested Asset Allocation by Age for Plan Sponsors
- Tax Planning Strategies for Retirees to Save More
- Tax-Efficient Retirement Withdrawal Strategies
- Traditional IRA Investments: Options Compared
Plan Types & Key Definitions
- 401(h) Plan Setup: Rules, Steps & Tax Benefits
- Government Retirement Plans | Types, Benefits & Comparisons
- Largest 401(k) Providers | Plan Sponsor Guide
- Plan Administrator | Duties, Definition & ERISA Compliance
- Plan Sponsor Support for Smooth Retirement Plan Administration
- Qualified Retirement Plans: Benefits, Types & Rules
- Retirement Benefits Manager: Duties, Career & Salary Guide
- Retirement Plan Financial Management Guide
- What Is a 401(a) Qualified Plan? Eligibility & Benefits
- What Is a Solo 401(k)? Rules & Who Qualifies
Hubs, Education & Next Steps
- 401(k) Knowledge Center
- Fiduciary Education
- Plan Sponsor Resources
- Admin316 Insights
- The Plan Sponsor Fiduciary Lunch
- Request a Meeting
- Can a Plan Have a TPA, a Plan Administrator AND a 3(16)?
- 401(h) Retiree Medical Accounts
Benefits Administration & State Coverage
- Flexible Spending Account Administrators: How to Choose
- 401(k) Plan Administration by State
- Plan Document Restatements: What Sponsors Sign
- Plan Document vs. Operations: Fixing Mismatches
Not sure where your plan stands? Take the free 401(k) Fiduciary Risk Check — 5 questions, instant score, no email required.
