I claim my 15year old son as an eligible dependent. He just started working in september why does his income affect my refund he only earnt $4000 and I only earn $30,000

Before i put in his income it says i get a refund of about $360 but as soon as i put in his income it says i owe about $300 CAD

After you file

Your son's net income affects the eligible dependant credit.  The credit is reduced by the amount of your son's net income.

http://www.cra-arc.gc.ca/tx/ndvdls/tpcs/ncm-tx/rtrn/cmpltng/ddctns/lns300-350/305/rtrn-eng.html

http://www.cra-arc.gc.ca/E/pbg/tf/5000-s5/5000-s5-16e.pdf

View solution in original post