I've had a couple of LLCs in the US (now and in the past) and they've been pretty hands-off as far as paperwork/tax stuff go. More or less, just keep good books and file/pay quarterly taxes and that's about it. I'm curious about what you've run into?

You deal with essentially (probably exactly) the same tax issues any freelancer would deal with, right?

Mine is almost certainly almost the minimal case, except for someone running in Delaware. Federally, I file quarterly 941s (employee tax withholding), annual 940 (unemployment) and 1020 (tax return). In Delaware I final annually (stamp tax). I then file locally for Washington (excise tax) and Seattle (licensing tax).

I believe a freelancers wouldn't file employee tax forms. They frequently roll their filings into their personal taxes.

[edit: this is for a C corp]