You can download on up to 5 computers you personally own without issue.
But may I suggest you skip the H&B version and just get the Deluxe if you need a state return (careful amazon sells them with & without the state) or Basic if you don't need a state or to import from It's Deductible and save yourself a few bucks. All the personal Downloaded versions can handle ALL the same forms/situations so unless you feel the need to upgrade for more "hand holding" you can use the cheaper version. H&B is "recommended" but not required ... it is a marketing ploy to get you to buy the more expensive product.
