Flat-Fee Financial Advisor Guide

An honest framework for the decisions at hand. Not tax or investment advice — your specifics matter.

The AUM model's structural problem

• 1% of assets sounds small. At $1M, it's $10K/year. At $5M, it's $50K/year. At $10M, it's $100K/year.
• The advisor's workload doesn't scale linearly with your assets. A $10M client doesn't require 10x the advisor hours of a $1M client.
• AUM compensation creates conflicts: pushing rollovers (unlocks AUM), discouraging mortgage paydown (shrinks AUM), avoiding real estate (doesn't fit AUM).
• For high-asset investors, AUM is often extractive rather than additive.

Flat-fee model variants

• Annual retainer: $3,000-$15,000/year covering comprehensive planning + investment management. Most common.
• Hourly engagement: $250-$500/hour for one-off projects. Best when you don't need ongoing service.
• Project-based: fixed fee for a defined scope (comprehensive plan, pre-retirement review, divorce financial analysis). $1,500-$10,000 typical.
• Subscription model: monthly fee ($200-1,500/month). Increasing in popularity for younger HNW.

When flat-fee wins

• $2M+ investable: AUM fees exceed $20K/year, often more than the advice is worth.
• Straightforward portfolios: index funds, dedicated tax-loss harvesting isn't needed. Why pay for complexity you don't use?
• DIY-leaning investors who want second opinions: hourly or project-based engagement model works best.
• Major life events: divorce, inheritance, business sale, retirement transition — one-off project engagement fits the need exactly.

When AUM still makes sense

• Under $500K: flat fees of $5-10K represent a high % of AUM. An AUM fee of 0.5-1% on $300K is reasonable for active service.
• Heavy behavioral support needed: AUM compensation incentivizes advisor to 'talk you off the ledge' in bear markets. Flat-fee advisors don't have the same financial interest in your portfolio survival.
• Tax-loss harvesting at scale: direct indexing requires active management that flat-fee models sometimes exclude (though some flat-fee firms do integrate this).

Vetting a flat-fee advisor

• Verify true fee-only status via Form ADV Part 2 filed with the SEC or state — this discloses all revenue sources.¹ Any commission revenue = "fee-based," not "fee-only."
• Confirm fiduciary duty is continuous (registered investment adviser under Investment Advisers Act of 1940) rather than transactional (broker-dealer suitability standard or Reg BI).²
• Fee structure should be transparent: what's included, what's excluded, what's a la carte.
• Red flags: advisor calls themselves fee-only but revenue shows product sales, AUM percentages dressed up as "subscriptions," fee escalators tied to asset growth.

Specialist networks

• NAPFA, XY Planning Network, Garrett Planning Network: directories of verified fee-only advisors.³
• All require no commission revenue, fiduciary duty, and minimum credentials (CFP typical).
• Specialty filter by niche: divorce (CDFA), medical professionals, expats, tech executives, small-business owners.

Sources

1. SEC Form ADV — Uniform Application for Investment Adviser Registration. Part 2 discloses fees, conflicts, and revenue sources.
2. SEC Regulation Best Interest (Reg BI) (broker-dealers) vs fiduciary duty under Investment Advisers Act of 1940.
3. NAPFA — National Association of Personal Financial Advisors (fee-only only).
4. Kitces — Advisor Fee Structure Comparison.
5. SEC IAPD — Verify Any Adviser's Registration and Disclosures.

"Fee-only" has a specific regulatory meaning — verify via Form ADV Part 2 disclosures. NAPFA membership requires zero commission revenue.