I don't quite understand the question.
You must file an accurate tax return, if you leave the 1099-B off, the IRS will send you a letter assessing tax and penalties.
If the 1099-B shows you have taxable income (dividends, capital gains) that will increase your tax owed, and will decrease your expected refund as a result. If you don't understand the income you earned in your broker account, you should contact the broker and ask them to walk you through it.
Turbotax Online is structured so that you must upgrade to the Premier version to include a 1099-B. If you want to use Turbotax Online, and you want to file an accurate tax return, you must upgrade to Premier and pay the upgrade cost.
(You can use the IRS Freefile version of Turbotax if your income is less than $39,000, this is completely free even if you need a 1099-B, but it's a different web site.)
If you use the Desktop version of Turbotax (installed on your own computer using a CD or download that you can purchase from a store or an online retailer like Staples or Amazon) then you can use the Deluxe version and don't have to upgrade to Premier to import a 1099-B.
