Private Trust Company (PTC): Firing the Bank to Run Your Own Family Office

Tax Tips / Governance

Private Trust Company (PTC): Firing the Bank to Run Your Own Family Office

By Team BMT Feb 06, 2026

💡 Executive Summary

  • Problem: You set up a Dynasty Trust, but the “Corporate Trustee” (Big Bank) charges 1% of AUM ($500k/yr on $50M) and refuses to invest in your startup or crypto due to “policy.”
  • Solution: Establish a Private Trust Company (PTC). It is a regulated entity (LLC or Corp) created solely to act as the Trustee for your family’s trusts.
  • Result: You gain Total Control over investments, slash fees to a fixed operating cost, and maintain absolute privacy.
⚠️ THE COST OF ENTRY
A PTC is not for everyone. It requires significant setup (regulatory capital, legal fees) and ongoing maintenance ($50k – $100k/year). Generally, this makes sense only for families with $50M – $100M+ in trust assets, where the fixed cost is cheaper than the bank’s % fee.

For the Ultra-Wealthy (Tier L4), relying on a commercial bank to manage generations of wealth is often frustrating. Banks are slow, risk-averse, and prone to employee turnover. A PTC solves this by institutionalizing the family’s governance. You appoint the board, you write the investment policy, and you decide the distribution logic.

🧐 Core Mechanic: Bifurcation of Committees
A PTC separates powers:
1. Investment Committee: You and your advisors (Aggressive growth, Crypto, PE).
2. Distribution Committee: An independent party (CPA/Attorney) to say “Yes/No” to payouts (required for tax protection).
This structure gives you control over the money without triggering estate taxes.

Performance Simulation: Fee Analysis ($100M Assets)

Annual Trustee Fees
Big Bank Trustee (0.60% Tiered) ~$600,000 / Year (Variable)
Scales with Wealth
Private Trust Company (Fixed Cost) ~$150,000 / Year (Fixed)*
Economies of Scale

Trustee Options Comparison

Feature Individual Trustee (Uncle Bob) Corporate Trustee (Bank) Private Trust Company (PTC)
Liability Personal (High Risk) Corporate Shield Corporate Shield (D&O Ins.)
Investment Flexibility High Low (Common Funds) Unlimited (You decide)
Continuity Dies with trustee Perpetual (but turnover) Perpetual (Family Controlled)
“A PTC is not just about saving fees; it’s about freedom. It allows your Dynasty Trust to own a risky startup or a family compound without a bank compliance officer saying ‘it’s too risky.'”
BMT designs for tax reality, not theory.