AI for 401(k) Plans: What It Can Find — and What It Misses
AI CAN DO MORE THAN HELP YOU WRITE EMAILS
AI can uncover fees, conflicts, and compliance issues hiding in your 401(k) plan — but only if you ask the right questions. Here’s a practical guide to what it finds, what it misses, and when you actually need a human.
What AI Can Actually Find in Your 401(k) Plan
Upload your fee disclosure, 408(b)(2), plan document, or Summary Plan Description into ChatGPT or Claude. With the right prompts, AI can surface things that many advisors still can’t spot.
1. Hidden and Layered Fees
Your fee disclosure is likely a Russian nesting doll. There’s the recordkeeper fee, the advisor fee, the TPA fee, and then revenue sharing baked into the funds themselves — often called “12b-1 fees” or “sub-TA payments.” AI can pull these apart and tell you what you’re really paying as a percentage of plan assets, which is the only number that actually matters for comparison.
Try this prompt: “I’m uploading my 408(b)(2) fee disclosure. List every fee being charged, who it’s paid to, and what it’s for. Then tell me the total cost as a percentage of plan assets and as a dollar amount.”
2. Share Class Problems
Mutual funds come in different share classes — same fund, different price tags. If your plan is in “A shares” or “R3 shares” when it could be in “R6” or institutional shares, you’re likely overpaying. AI can read your fund lineup and flag this in about ten seconds.
3. Conflicts of Interest
Your advisor’s firm might be quietly getting paid by the fund companies they recommend. Your recordkeeper might be steering participants into their own proprietary funds or managed accounts. AI can spot these patterns in your plan disclosures — patterns that the people benefiting from them are not in a hurry to point out.
4. Missing or Outdated Required Notices
Annual fee disclosures, QDIA notices, safe harbor notices, automatic enrollment notices — there’s a long list of things plan sponsors are required to send participants every year. AI can review your records and flag what’s missing or out of date. The DOL takes these seriously. You should too.
5. Fund Lineup Issues
Are your funds underperforming their benchmarks? Are the expense ratios out of line with category averages? Is there a target-date series eating 75 basis points when comparable options charge 10? AI can run that comparison faster and more honestly than most quarterly reviews.
6. Plan Document Red Flags
Vesting schedules that don’t match what’s actually being administered. Eligibility rules that exclude people they shouldn’t. Loan policies that haven’t been updated since 2015. AI can read your plan document and SPD side-by-side and flag inconsistencies — which is exactly the kind of thing that turns into an expensive correction during an audit.
What AI Can’t Do (And Why That Matters)
Here’s where the WebMD analogy gets real. Knowing what’s wrong is not the same as fixing it.
AI can’t call your recordkeeper. When a recordkeeper is quietly pushing your participants into managed account services without disclosing the existing advisor relationship, AI can flag the issue. It can’t escalate it to the wholesaler or service teams and document the potential fiduciary breach.
AI can’t negotiate fees. It can tell you you’re overpaying by 40 basis points. It can’t sit on a Zoom with the recordkeeper’s relationship manager and renegotiate the contract.
AI can’t sit in front of your retirement committee. It can’t read the room when your CFO is hedging, your HR director is overwhelmed, and your CEO just wants someone to tell them what to do. Plan governance is a human job.
AI doesn’t sign anything as a fiduciary. When you need someone legally on the hook for investment selection and monitoring — a 3(21) or 3(38) fiduciary — that has to be a real entity with E&O insurance and skin in the game. ChatGPT is not that entity.
AI can’t correct a compliance error. It can tell you your ADP test failed or your vesting service credits weren’t applied correctly at plan inception. The correction itself — coordinating with the TPA, the recordkeeper, payroll, and potentially the IRS — requires a human who knows the process.
AI doesn’t know your business. It doesn’t know that one of your owners is about to retire, that you’re planning an acquisition next year, or that your safe harbor contribution is the only reason your highly-compensated employees pass testing. Strategy requires context that lives in your head, not in your documents.
How to Use AI on Your Own Plan
If you want to take a real swing at understanding your plan before talking to anyone, here’s the order of operations:
- Gather your documents. Fee disclosure (408(b)(2)), participant fee disclosure (404a-5), plan document, Summary Plan Description, most recent Form 5500, and the last quarterly investment review.
- Start with the fee disclosure. That’s the highest-leverage document. Upload it and ask AI to break down every fee, who it goes to, and what the total cost looks like as a percentage of plan assets and as a dollar amount. An old manager of mine used to say “people spend dollars, not basis points” so it’s important to get a handle on how much cash is leaving the plan.
- Run your fund lineup against benchmarks. Ask AI to compare each fund’s expense ratio to its Morningstar category average, and to flag underperformers.
- Check your share classes. Ask AI whether your funds are in the cheapest available share class given your plan’s asset size.
- Pull your Form 5500. Public document. Ask AI to identify anything unusual — large fees, service provider concentration, repeated corrections, missing schedules.
If you want the full prompt library, we have a deeper dive here.
Sound Familiar?
Most of the people who end up running an AI analysis on their plan got there the same way:
- You inherited the 401(k) and don’t know who set it up
- The advisor who sold it has rotated out, retired, or vanished
- You don’t actually know what you’re paying, or what you’re getting for it
- Every time something goes sideways, payroll gets blamed or the finger pointing starts
- You’re not sure whether you’re still compliant — and you’re not sure who would tell you
There’s a reason this happens. Most 401(k) plans under $10M in assets are sold by advisors at places like Edward Jones, Merrill Lynch, or your local bank — generalists who learned retirement plans on the job. On your dime. By the time they figure it out, they’ve usually moved on.
Plans run on autopilot until something breaks. And they tend to leak oil for a long time before they fully break down. AI is a useful early warning system. It’s not a substitute for someone whose actual job is your plan.
When You Need a Human
If your AI check-up turned up anything that made you nervous — fees that don’t add up, share class issues, compliance gaps, an advisor who seems to have disappeared — that’s the point where you stop diagnosing and start treating.
That’s where I come in.
I’m Jason Brady. I run Mission Retirement Consulting, a San Diego-based independent RIA focused on small-to-mid-sized 401(k) plans. I work as a 3(21) or 3(38) fiduciary and I don’t sell anything else. No insurance, no rollovers, no proprietary funds. Just plan oversight.
If you’ve run the AI diagnostic and want a real person to look at what it surfaced — or you’d rather skip the homework and have me run the analysis for you — here’s how:
Schedule a 15-minute Plan Reality Check
I’ll pull your 5500, review what you send me, and tell you the three things I’d fix first. If your plan is in great shape I’ll tell you that too. Diagnosis is free. If you want me to actually fix things, we can talk about that on the call.
Or call me directly: 1-619-942-4510
No sales pitch. No homework. Just straight answers.
Areas served.
We work with employers across California—including San Diego, Los Angeles, Orange County, Sacramento, and the Bay Area.
💬 Not ready to book a call?
Run your plan through AI first. If the answers make you uneasy, we should talk.
AI 401k FAQ
Frequently Asked Questions
Can ChatGPT really analyze my 401(k)?
Yes, with caveats. ChatGPT and Claude can read your plan documents, fee disclosures, and Form 5500 filings and identify a lot of issues — hidden fees, share class problems, missing notices, fund underperformance. What they can’t do is verify their conclusions against your actual plan administration, call your providers, or take any action on your behalf. AI is a strong diagnostic tool. It’s not an advisor.
Is it safe to upload my 401(k) documents to AI?
It depends on what’s in the documents and which tool you’re using. Plan documents and fee disclosures are generally not sensitive — they’re often public-facing or filed with the government anyway. Form 5500s are literally public records. Where you have to be careful is anything containing participant data — names, Social Security numbers, account balances by individual. Strip that out before uploading. If you’re using a free consumer ChatGPT or Claude account, assume your inputs may be used to train future models. Paid tiers and enterprise versions typically offer data privacy guarantees.
What’s the difference between a 3(21) and 3(38) fiduciary?
A 3(21) fiduciary advises the plan sponsor on investment decisions — they recommend, you decide. The plan sponsor remains the final decision-maker and shares fiduciary liability. A 3(38) fiduciary takes discretionary control over investment selection and monitoring — they decide, you delegate. This shifts more of the fiduciary liability to the 3(38). Most small and mid-sized plans use one or the other. The right choice depends on how involved your retirement committee wants to be and how much liability you want to offload.
How much should I be paying for my 401(k) plan?
There’s no single right answer, but here are useful benchmarks. Total plan costs — meaning recordkeeping, advisor, TPA, and fund expenses combined — typically run between 0.50% and 1.50% of plan assets per year for plans under $10M. Above that, costs should compress. If you’re paying more than 1.25% on a plan with $5M or more in assets, there’s almost certainly room to negotiate. Advisor fees alone for a fiduciary advisor typically run $100-$150 per participant per year on a flat fee basis, or 0.25%-0.50% of assets if asset-based.
What is a 408(b)(2) and why does it matter?
The 408(b)(2) is a fee disclosure that service providers are required to give plan sponsors under ERISA. It spells out who’s getting paid what, for what services, and from which sources. It’s the single most important document for understanding what your plan actually costs. If you’ve never read yours — or never received one — that’s a problem. Plan sponsors have a fiduciary duty to evaluate the reasonableness of fees, and you can’t do that without the 408(b)(2).
Can AI replace my 401(k) advisor?
No, but it can replace a bad one. If your current advisor is a generalist who sold you the plan five years ago and hasn’t done meaningful review work since, AI will probably outperform them on diagnostics. What AI can’t do is take fiduciary responsibility, sit in committee meetings, negotiate with providers, or coordinate corrections when something goes wrong. A good advisor does all of that. The question isn’t “AI vs. advisor” — it’s “AI plus a good advisor vs. a bad advisor pretending to do their job.”
What’s revenue sharing in a 401(k)?
Revenue sharing is when the funds in your plan pay a portion of their expense ratio back to your recordkeeper or advisor to offset administrative costs. It’s not inherently bad, but it’s often invisible — participants are paying for plan services through their investment returns without realizing it. The problem is that revenue sharing creates conflicts of interest (funds that pay more get recommended more) and makes it hard to compare costs across providers. Modern best practice is to use zero-revenue-share funds and pay plan expenses transparently as flat fees or per-participant charges.
How do I know if my 401(k) is compliant?
Short answer: you probably don’t, unless someone is actively checking. Common compliance issues include failed ADP/ACP tests, missed deadlines for participant notices, incorrect application of eligibility or vesting rules, late deposits of employee deferrals, and outdated plan documents. Some of these get flagged automatically by your recordkeeper or TPA. Many don’t. The DOL and IRS can audit your plan at any time, and the cost of fixing problems found in audit is usually 10x the cost of finding them yourself first. An independent review every few years is cheap insurance.
Do I need to switch providers if AI finds problems?
Not necessarily. Most plans don’t need a full provider change — they need better oversight of the providers they have. Recordkeepers, TPAs, and advisors all renegotiate fees, fix service issues, and update lineups when someone with leverage is asking the right questions. Switching providers is disruptive and expensive. Sometimes it’s the right move. Often it isn’t.
