April 9, 2008 10:32am by David Farrar

NZIER tax cut tool

Hidden away on the NZIER site is a excel spreadsheet which allows you to design your own tax cuts.

You can do the following sorts of adjustments:

Change Thresholds
Change Rates
Change Thresholds and Rates
Introduce a tax-free threshold
Income Splitting

For each scenario, it will tell you have much less tax you will pay, and the approximate fiscal cost.