Right. It started out giving you the full 6,000 as soon as you entered your children. Then at the end you enter the 3,000 advance you already got so it takes it out. Line 28 is only the remaining amount you still get. So mentally subtract the 3,000 you already got from the 2,155 tax due and you would have a 845 net refund.
found this in a news article, it explains it pretty well........
While the CTC expansion was structured to not increase taxes on any household, a dollar of credit received in advance results in a dollar less received at filing time. For families unaware of the trade-off, it could mean a surprise when they see their refund total this year.
Consider a married couple with a 10-year-old child who normally received their $2,000 CTC when they filed their taxes. They would have received $1,500 of their $3,000 in advance. As such, they could potentially see their refund shrink by $500 even though their total benefit increased to $3,000 because they are left with $1,500 instead of their normal $2,000 at tax time.
