KiwiSaver members over 18 have until the end of the week to ensure they have contributed enough to their accounts to get the Government's full $521 subsidy.
Savers have to put in $1043 for the year to June 30 to be eligible for the full amount, which has halved from previous years.
Up until this year, savers were matched by the Government for every dollar they invested up to the maximum $1043.
But the Government cut back the subsidy in the 2011 Budget, meaning savers get only 50c for every dollar they invest up the maximum.
Savers can check their balance with either the Inland Revenue or their provider to see how much they have contributed so far this year and then make a top-up if needed.