Tax Free investment

• Tax-Free Long-Term Capital Gains (below certain income threshold, up to 20% tax rate)
• Tax-Free Municipal Bonds (e.g. VTEAX)
• Tax-Free Treasury Securities (e.g. Bills/Notes/Bonds)
• Tax-Free Roth IRA (after tax contribution)
• Tax-Free Roth 401K (after tax contribution)
  
• Tax-Free Life Insurance (IUL - loan with interest rates)
• Tax-Free HSA (triple tax benefits) 
• Real Estate Can Be Tax-Free (Deprecations non-cash expense)
• Tax-Free Business (if expense is more than income)