Caruso Company's SUTA rate for next year is 2.9% because its reserve ratio falls in its state's 8% to less than 10% category [(contributions benefits paid) average payroll = $93,500 $971,500 = 9.62%]. If the next category (10% to less than 12%) would give Caruso a lower tax rate of 2.3%, what would be the amount of the voluntary contribution needed to get Caruso to that next category?