Provided that your Form 1099 is one of the following types of 1099s, you can import it directly from Charles Schwab:

 1099-B, 1099-DIV, 1099-INT, 1099-OID, or 1099-R 

Charles Schwab is a TurboTax Partner.

Please see the following TurboTax FAQ, on "How do I import my 1099?":

https://ttlc.intuit.com/replies/3389470