Amendments are not for the faint of heart.  They’re a bit confusing, particularly if you’re adding or subtracting dependents.  This is one form where you really should seek the help of a professional.  I believe you should always seek the help of a professional, but this one in particular is confusing.  There are lots of good reasons and a few not so good reasons for amending.  Once the amend is prepared and sent off - be prepared to wait.  It can take up to 12 weeks to see your money and longer if the amend is not completed correctly.