Timothy Decker


ISI Financial Group, Inc.

Financial Advisor

Timothy Decker


ISI Financial Group, Inc.

Financial Advisor

As a fee-only financial planner, my focus is to offer unbiased financial advice to help you achieve your life goals. - Timothy Decker, AIF®, PPC®

(717) 393-3353

Fee Only Financial Planner Located in Lancaster, PA and Serving Clients Worldwide

Timothy Decker is a Lancaster, PA fee-only financial planner. ISI Financial Group, Inc. provides comprehensive and objective financial planning to help clients organize, grow and protect their assets through life’s transitions. As a fee-only, fiduciary, and independent financial advisor, Timothy Decker is never paid a commission of any kind, and has a legal obligation to provide unbiased and trustworthy financial advice.

Tim Decker is president of ISI Financial Group, an independent, Fee-Only Registered Investment Advisor. ISI provides comprehensive financial planning, retirement planning, and wealth management services for individuals and institutional clients, including 401(k) services and management.

Tim has over 30 years of experience and is proud to be a fee-only financial advisor and fiduciary. He has received formal training in investment fiduciary responsibility and has earned the Accredited Investment Fiduciary® professional designation (AIF®), awarded by the Center for Fiduciary Studies, associated with the University of Pittsburgh. The Center for Fiduciary Studies owns the marks AIF® and AIFA®, which it awards to individuals who successfully complete initial and ongoing accreditation requirements.

Tim also holds the designation of Professional Plan Consultant (PPC) and is a member of the National Association of Personal Financial Advisors (NAPFA).

Tim is a consumer advocate and can be heard every Saturday at 10:00 AM Eastern on WHP 580 AM Harrisburg providing financial guidance and answering questions from callers on his radio show “Financial Freedom.”

His book, The Sleep-Well-At-Night Investor, discusses the deceitful practices of the mutual fund industry and how to confidently invest financial assets.

Tim is frequently a source for local and national media. He currently writes a column for Susquehanna Style magazine. He has written columns for the Harrisburg Patriot News and the Central Penn Business Journal. He has been a source and quoted in The Wall Street Journal. He has also made several television appearances including featured spots on ABC 27 News, CBS 21 News, WITF's Smart Talk, and WGBC’s American Visions.

Frequently requested as a speaker, Tim provides talks at church groups, charitable organizations, and social functions as well as seminars and workshops for tax accountants and corporations.

Timothy Decker is a Member of the National Association of Personal Financial Advisors

The National Association of Personal Financial Advisors (NAPFA) is the country’s leading professional association of Fee-Only financial advisors - highly trained professionals who are committed to working in the best interests of those they serve.

NAPFA members live by three important values:

  • To be the beacon for independent, objective financial advice for individuals and families.
  • To be the champion of financial services delivered in the public interest.
  • To be the standard bearer for the emerging profession of financial planning

A Fee-Only Financial Planning Fiduciary and Wealth Management Firm

ISI Financial Group is a Fee-Only financial planning and wealth management firm. ISI provides comprehensive financial planning and fee-only wealth management services for individual and institutional clients, including 401(k) services and management. As a member of the National Association of Personal Financial Advisors (NAPFA), we are bound to a written fiduciary oath to always represent our clients’ best interests in all we do.


The Sleep-Well-At-Night Investor Approach

The Sleep-Well-At-Night Investor approach to financial planning and wealth management is designed to help achieve financial freedom. For our clients, it’s the freedom to put their focus and energy on the important areas of their life such as family, hobbies, and much more. We help clients achieve this by assisting them in developing a personalized, comprehensive financial plan that can help them achieve their financial goals.

We take the time to get to know our clients, their families, and especially their dreams and aspirations. Working together we develop “what if” and “financial fire drill” scenarios that are unique and personal to each client. The result is a personalized, comprehensive plan built using prudent, time-tested strategies customized for each client.

Once a financial plan is developed, we help our clients implement their customized plan and provide regular monitoring to help ensure desired results are achieved.

Our Sleep-Well-At-Night Investor approach to wealth management isn’t speculative. We don’t use crystal balls trying to gamble against the markets. Instead, we build portfolios to capture the returns the market will inherently deliver over time using, when appropriate, institutional, low-cost, efficient investment vehicles that also minimize tax liability.

We also can provide clients access to, when appropriate, investments at Vanguard and Dimensional Fund Advisors (DFA) that are available only via select, fee-only advisors.

Fee-Only, Fiduciary, Independent: Three Important Criteria to Consider When Choosing a Financial Advisor.


  • Comprehensive Financial Planning
  • Retirement Income Planning
  • Investment Management
  • College Education Planning
  • Tax Planning

Ideal Clients

  • Retirees and Near Retirees
  • Growing Families
  • Business Owners and Executives
  • Sudden Money Situations
  • Novice Investors

Working Together

  • In-Office Meetings
  • Virtual Meetings
  • Clearly Defined Fees
  • No Product Sales
  • Complimentary Initial Consultation

Professional Designations & Affiliations

  • National Association of Personal Financial Advisors (NAPFA)
    Timothy Decker is a NAPFA-Registered Financial Advisor

    The National Association of Personal Financial Advisors (NAPFA) is the country’s leading professional association of Fee-Only financial advisors—highly trained professionals who are committed to working in the best interests of those they serve.

  • Accredited Investment Fiduciary®
    Timothy Decker is an Accredited Investment Fiduciary® (AIF)

    Advisors who have earned the Accredited Investment Fiduciary designation are able to immediately show that they are interested in and working towards the best interests of their clients. They have gone through training, met the qualifications, and passed the exam allowing use of the AIF designation.

Contact Timothy Decker

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Office Locations:

  • 26A East Roseville Road
    Lancaster, PA 17601

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