If you have not filed, then go back to the dependent care section and enter it. If you have filed then:
To amend your 2016 tax return:
-- First, wait to see if your return has been accepted or rejected by the IRS or state.
That will be after Jan 23 when the IRS starts accepting tax returns.
DO NOT do anything until you receive the accept or reject e-mail.
-- If rejected, you can correct and re-send your return.
-- If accepted you should
wait until your return has been processed and you receive your refund or conformation that any tax due has been paid. (If you file an amended return while you first return is being processed it can cause extended delays for both returns if two returns are in the system at the same time). In addition, if the IRS makes any change on your original return, you might end up having to amend the amendment – a sticky process that can take a year or more).
-- Then you can start the amend process.
-- Amended returns can only be mailed - allow 16 weeks (4 months) for processing.
See this TurboTax FAQ for help with amending:
https://ttlc.intuit.com/questions/3061514-how-do-i-amend-change-or-correct-a-2016-return-with-turbot...You can check the status of your mailed amended return at this link but allow 3 weeks after mailing before checking.
http://www.irs.gov/Filing/Individuals/Amended-Returns-%28Form-1040-X%29/Wheres-My-Amended-Return-1
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**