When you file only a single W-2 from an employer, it's considered a simple tax return. With a simple return, you won't be itemizing deductions, claiming investment income or rental property, reporting freelance income or claiming business expenses like a home office.
Companies like Intuit and H&R Block explain the added complexity commensurate with their higher-tier products, so if you aren't sure, double-check their lists before purchasing. You can also start filing with a free return in most cases and upgrade your service level if needed.