# Ariadne Horstman

> Ariadne Horstman is a fee-only financial advisor at Tamarind Financial Planning in Palo Alto, California, who holds the CFP and RLP credentials. Ariadne charges a percentage of assets, an ongoing planning fee and a one-time planning fee (ongoing planning from $10,000 a year and one-time plans from $7,900) and focuses on international & expat planning, equity compensation and retirement planning.

Page: https://find.wellspent.co/advisors/ariadne-horstman/
Built from public directory listings; last checked April 21, 2026.

## Facts

- **Firm:** Tamarind Financial Planning
- **Based in:** Palo Alto, California
- **Fee model:** Percentage of assets; Ongoing planning fee; One-time planning fee
- **Fees (firm's website):** ongoing planning from $10,000 a year; one-time plans from $7,900
- **Credentials:** CFP, RLP
- **Specialties:** International & expat planning, Equity compensation, Retirement planning, Sustainable & impact investing
- **Works with:** Cross-border families, Tech employees, Pre-retirees
- **CRD:** 5879842 (https://adviserinfo.sec.gov/individual/summary/5879842)
- **SEC registration:** Investment adviser representative in CA, TX
- **Exams passed:** Series 65 (2011)
- **Firm size:** 3 employees
- **Disclosures:** None reported
- **Website:** http://tamarindfinancial.com

## Frequently asked questions

### Is Ariadne Horstman a fee-only financial advisor?

Yes. Ariadne Horstman is listed in the XY Planning Network directory (XYPN members are fee-only). SEC records as of October 27, 2026 show no broker registration and no commission compensation reported by Ariadne's firm.

### How does Ariadne charge for financial advice?

Ariadne charges a percentage of assets, an ongoing planning fee and a one-time planning fee.

### How much does Ariadne charge?

According to Tamarind Financial Planning's website, checked October 28, 2026: ongoing planning from $10,000 a year; one-time plans from $7,900.

### Where is Ariadne Horstman based?

Ariadne Horstman is based in Palo Alto, California.

### What does Ariadne specialize in?

Ariadne's specialties include international & expat planning, equity compensation, retirement planning and sustainable & impact investing. Ariadne works with cross-border families, tech employees and pre-retirees.

### What credentials does Ariadne Horstman hold?

Ariadne Horstman holds the CFP and RLP credentials.

### Is Ariadne Horstman registered with the SEC?

Yes. Ariadne Horstman is registered as an investment adviser representative in CA and TX (CRD 5879842), per SEC Investment Adviser Public Disclosure data as of October 27, 2026.

### How do I contact Ariadne Horstman?

Through Ariadne's website, tamarindfinancial.com.

## Sources

- XY Planning Network directory listing (https://www.xyplanningnetwork.com/find-an-advisor/ariadne-horstman-10140): XYPN members are fee-only
- SEC Investment Adviser Public Disclosure and Form ADV: registration, exams, and firm facts, data as of October 27, 2026
- The firm's website (https://tamarindfinancial.com/): specialties, clients served, and fees, checked October 28, 2026

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Source: Wellspent, the public graph of fee-only advisors (https://find.wellspent.co). No paid placement.