To redeem a
turbotax service code online, visit turbotax website, sign in to your account, and start a new return or open an existing one. Be
fore checkout, look
for the “Got a service code?” link on
the payment screen. Click it and enter your 16-character code. The discount or offer will apply automatically. Ensure
the code matches your product version. If
the code doesn’t work, double-check
for typos or contact TurboTax support
for help.