Parent has a tax amount on line 16 of 1040 and also other taxes on line 23 of 1040. Line 16 is $1000 for example and line 23 is $100 which makes line 24 of 1040 = $1100.
When filling out form 8615 should line 10 of form 8615 be line 16 of parent 1040 or line 24 of parent 1040
