The Eligible Credit Amount is the difference between the Eligible Taxpayer’s real property tax liability on the taxpayer’s homestead for a given tax year and the property tax liability on the said homestead in the year that the taxpayer became an Eligible Taxpayer.  Please note that because this is a credit and not an assessment freeze, the credit may fluctuate from year to year.   Additionally, certain portions of your real property tax bill are exempt from the credit by law.  See response to #11 of these FAQ.