A group of NSW MPs is pushing for a review of the parliamentary pension scheme after their previous generous entitlements were wound back by former Premier Bob Carr.

More than 50 MPs from the Liberal, Nationals and Labor parties have committed to contributing $200 towards a costing of scenarios to replace their current superannuation entitlements, including a specific payout after four years or eight years service.

NSW Premier Mike Baird with John Sidoti. Credit:Nick Moir

For example an MP who leaves or gets voted out after one four-year term might get a payout of three months' pay. An MP who completes two terms might get eight months' pay.

Those MPs who complete three terms could be given a more generous parliamentary pension for life.