Investors faced with the prospect of being able to put less into superannuation are already looking for other ways to boost their retirement savings. While it won't be clear until budget night on May 3 whether pre-tax super contribution caps will be lowered, financial advisers say if this does happen, there are other (albeit not as tax-effective) strategies to add to retirement nest eggs.

Super has long been one of the best ways to put money away for the future while saving on tax, which is likely to be one of the reasons it's still on the government's radar.