If you Downloaded from a retailer and can't find the License Code
https://ttlc.intuit.com/community/tax-topics/help/i-can-t-find-my-license-code/01/855903
If you have the Turbo Tax CD and can't find the License Code
https://ttlc.intuit.com/community/tax-topics/help/i-can-t-find-my-license-code/01/855902
Find the License Code if you downloaded from Turbo Tax or the Advantage plan
https://ttlc.intuit.com/community/tax-topics/help/i-can-t-find-my-license-code/01/855904
