Timothy  Decker

Timothy Decker


ISI Financial Group, Inc.

(717) 393-3353

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


  • Fee-Only Financial Services
  • Comprehensive Financial Planning
  • Investment Management
  • Retirement Planning
  • Education Planning
  • Estate Planning
  • Insurance Analysis
  • Charitable Giving and Trusts
  • Planning for Business Owners
  • Cash Flow and Budgeting
  • High Net-Worth Clients
  • 401(k) Services


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26A East Roseville Road
Lancaster, PA 17601

Fee-Only & Fiduciary

The National Association of Personal Financial Advisors (NAPFA) is the country's leading association of fee-only and fiduciary financial planners.

Timothy Decker is a Lancaster, PA Fee-Only Financial Planner serving clients both close to home in Central PA and throughout the world.  ISI Financial Group, Inc. specializes in providing objective financial planning to help clients build, manage, grow, and protect their assets through life's transitions. Timothy Decker is a NAPFA-Registered Financial Advisor and an Accredited Investment Fiduciary (AIF®).

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.


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.