Paying US federal and state taxes online can be confusing, and one wrong move can result in penalties or extra money owed. We break it down so you can have the most worry-free tax filing possible.

Most married couples will come out ahead by filing jointly, but filing separately may be the better choice for some.

If you don’t pay your taxes, you could be hit with penalties and interest, have your property or wages seized, or even be charged with a crime.

Those polled also expressed uncertainty around what to expect when filing, with one-quarter of respondents saying they worried about having to pay more taxes than they'd expected.