The private school tuition tax credit limits adjust annually based on the Consumer Price Index of the Phoenix Metropolitan Area.   The Arizona Department of Revenue publishes these annual credit amounts.

Tax Year 2017 maximum credit limits are:

Original Tax Credit:  $1,092 for married couples filing jointly or $546 for individuals.

PLUS Tax Credit:  $1,085 for married couples filing jointly or $543 for individuals.

Combined Credits:  $2,177 for married couples filing jointly or $1,089 for individuals.

Tax Year 2018 maximum credit limits will adjust to:

Original Tax Credit:  $1,110 for married couples filing jointly or $555 for individuals.

PLUS Tax Credit:  $1,103 for married couples filing jointly or $552 for individuals.

Combined Credits:  $2,213 for married couples filing jointly or $1,107 for individuals.