Brian, a self employed individual, pays state income tax payments of:
$900 on January 15, 2014 (4th estimated tax payment for 2013)
$1000 on April 14, 2014 (1st estimated tax payment in 2014)
$1000 on June 16th, 2014 (2nd estimated tax payment in 2014)
$1,000 on September 2014 (3rd estimated tax payment in 2014)
$800 on January 15, 2015 (4th estimated tax payment of 2014)
Brian had a tax overpayment of $500 on his 2013 state income tax return and applied this to his 2014 state income taxes. What is the amount of Brian's state income tax itemized deduction for his 2014 Federal income tax return?