The Simple Tax Multiplier calculator computes a factor of change in aggregate production caused by changes in taxes as a function of the propensity to consume and save.
INSTRUCTIONS: Enter the following:
Simple Tax Multiplier: The calculator returns the multiplier as a percent factor.
The simple tax multiplier is the ratio of the change in aggregate production to an autonomous change in government taxes when consumption is the only induced expenditure. Autonomous tax changes trigger the multiplier process and induced consumption provides the cumulatively reinforcing interaction between consumption, aggregate production, factor payments, and income.
Source: http://www.amosweb.com/cgi-bin/awb_nav.pl?s=wpd&c=dsp&k=tax+multiplier