Yet another vote for FreeTaxUSA. I’ve used it for half a decade or so and haven’t paid a penny (no state taxes). It’s $15 if you do, or you can be cheap and do that part separately for free. There’s an addon service that provide some peace of mind additions and free amended returns. They put up a single screen once or twice to tell you about it but don’t really nag you, it’s unobtrusive as it can be. Every form that 99.9% of people use is supported, Schedule C naturally.
H&R Block is generally free too, I used them longer ago when it was semi-free (income limitations) and it was fine. Just don’t use TurboTax, they suck.
