Manny's taxable income after subtracting the basic personal amount of $11,023 is:
$56,027 - $11,023 = $45,004
Manny's income tax is 26% of $45,004, which is:
$45,004 x 0.26 = $11,701.04
However, Manny already has $10,261.36 in tax credits for 2015, so the amount of tax he still owes is:
$11,701.04 - $10,261.36 = $1,439.68
Therefore, Manny still owes $1,439.68 in taxes for 2015.