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Advisor

John Mersek

Essential Investing · Phoenix, Arizona

John Mersek is a fee-only financial advisor at Essential Investing in Phoenix, Arizona. John charges a percentage of assets.

Percentage of assets Fee-only

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Facts

FirmEssential Investing
Based in Phoenix, Arizona
Fee modelPercentage of assets
Accepting new clientsYes
Assets under management$53.5M across 259 accounts
SEC registration Investment adviser representative in AZ, TX · CRD 6414039
Exams passedSeries 65 (2014)
Firm size3 employees
Disclosures None reported
Websitewww.essential-investing.com
LinkedInProfile

How John's firm compares

  • Essential Investing's average account is about $207,000, from its Form ADV (assets managed divided by 259 accounts).

What fee-only advisors charge in Arizona

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Questions about John

Is John Mersek a fee-only financial advisor?

Yes, according to SEC records as of October 29, 2026: John holds no broker registration, and Essential Investing reports no commissions, no broker-dealer, and no insurance sales or affiliated insurance agency on its Form ADV.

How does John charge for financial advice?

John charges a percentage of assets.

Where is John Mersek based?

John Mersek is based in Phoenix, Arizona.

Is John Mersek registered with the SEC?

Yes. John Mersek is registered as an investment adviser representative in AZ and TX (CRD 6414039), per SEC Investment Adviser Public Disclosure data as of October 29, 2026.

How much does Essential Investing manage?

Essential Investing reports $53.5M across 259 accounts in assets under management.

How do I contact John Mersek?

Through John's website, www.essential-investing.com.

What these terms mean: fee-only · fiduciary · CFP · CRD number · all terms

Where this information comes from

  • SEC adviser records : the firm's Form ADV reports no commissions, no broker-dealer, and no insurance sales or affiliated insurance agency, and the advisor holds no broker registration
  • Essential Investing website : specialties, clients served, and fees, checked October 30, 2026
  • SEC Investment Adviser Public Disclosure : registration, exams, and the firm's Form ADV, data as of October 29, 2026
  • Directory listing last checked October 30, 2026.

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