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About Jonathan Hammel

Jonathan Hammel is the owner and founder of Hammel & Company Advisory Group. He has been in business since 1993 and travels statewide, with a focus in Wisconsin. Jonathan has been advising clients using financial products for retirement planning, income planning and estate planning to lead his clients towards a happy retirement.


He has been a member of the Association of Chartered Senior Financial Planners for the last 13 years, and is Insurance Licensed in seven states. Jonathan was born and raised in the Delafield area, and has two sons Zachariah and Austin who also work with Hammel & Company for the last 14 years and are also Insurance Licensed in several states.

Let's Meet

Schedule An Appointment for Your Complimentary Estate Planning Analysis

In this analysis, you'll discover...

  • The best options for keeping you financial legacy safe from probate. 
  • Advanced planning techniques to reduce your estate taxes. 
  • How to prevent family discord and costly legal expenses through an estate plan.
  • How to protect your assets from unforseen creditors. 
  • Plus, how to efficiently transfer you estate to your heirs in an orderly manner.


Receive a complimentary Estate Planning Analysis to make sure you leave more of your legacy to your loved ones.

Complimentary eBooks

In these Ebooks you will learn...

  • How long your money will last if you stop working today.
  • The appropriate spending rate for your retirement savings.
  • The pre-retirement income needed to maintain your current standard of living.
  • How longevity affects funding your retirement.
  • And much, much more! 

Test Your Knowledge About Estate Planning 

Contact Us

Still have questions about your financial future? Our team is here to help. You're one click away from expert answers to your most critical retirement questions.

Hammel & Company Advisory Group

2121 N. Genesee St.
Delafield, WI 53018  

(262) 646-2096