If you own MaxiFi Standard and wish to upgrade to Premium to get the Monte Carlo and contingent planning, you can upgrade by purchasing MaxiFi Premium as if you were renewing. 

This upgrade purchase will ring up at checkout as $129 =  $89 (renewal) + $40 (upgrade). The $89 is adding one year to your current license expiration and the $40 is upgrading you to Premium. 

If you are early in your license period and do not wish to extend your license for an extra year and only want to pay the $40 for the Premium upgrade, please use the contact us in the HELP widget to let us know and we'll refund the $89.