For Roblox gift cards or purchases, Alaska is the clearest U.S. place with no state sales tax, and Juneau, Alaska 99801 is the location surfaced in the results as a tax-free example.

A few quick notes:

  • Roblox gift cards are usually taxed at the time of purchase, depending on the state.
  • Some places also have no local sales tax, but Alaska is the safest broad answer because it has no state sales tax.
  • If you’re asking about a specific city or online checkout, the final tax can still depend on where the seller calculates the purchase.

So the short answer is: Alaska.