K-1 (Tax Info)

Beginning in early March the 2016 tax packages will be mailed to unitholders and will also be available online through the
K-1 link listed below:

MPLX Tax Reporting Package

This site provides you quick and easy access to your tax information, including the ability to:

  • View your tax schedules
  • Print your tax package including instructions
  • Automatically transfer amounts from your Schedule K-1 to IRS forms filed by individuals
  • Download a file of your Schedule K-1 information that can be imported into Turbo Tax software
  • Request changes to incorrect information

If you need further assistance or have any questions regarding your tax package, please contact the MarkWest Tax Support Line at (800) 232-0011.