Would I be able to pay half of what I owe today and the other half on 04/20/2018?
You will need to have the other half in by April 18th. After that you will have to pay a penalty. See article below: https://ttlc.intuit.com/replies/4159821
You have clicked a link to a site outside of the TurboTax Community. By clicking "Continue", you will leave the Community and be taken to that site instead.