Ok so I had 1733 on form 1040 line 1 Line 8 is 9867 Line 9 is 11600 Line 11 is 11600 Line 12 is 12400 Line 14 is 12400 Line 15 (taxable income is 0?), it’s 800 not 0?

[Reno2]

Line 15 you subtract line 14 from line 11 and it’s 800 so why is it 0 on my filed return?

[Critter-3]

Read the line instructions again ... the difference between them may be $800 but you cannot have NEGATIVE income. 

Line 15 Taxable income. Subtract line 14 from line 11. If zero or less, enter -0- . 

line 11 ... 11600 -  (line 14)  12400  = negative 800 which is less than zero so a zero is entered. 

[VolvoGirl]

It's a MINUS 800  which is less than 0.