Guide topic
Filing, and what you owe where
The return itself — what goes on it, where it goes, and how to fix it afterwards.
United States only. These guides cover US federal tax. They do not apply to Canada, the UK or other countries.
For most self-employed people the return is one extra form. Schedule C reports the business income and expenses, Schedule SE computes the self-employment tax, and both flow onto the same Form 1040 an employee files. There is no separate business return unless you have elected to be taxed as an S-corp or a partnership.
Where it gets genuinely harder is jurisdiction. Federal rules are the same everywhere; state rules are not, and moving mid-year, working remotely for out-of-state clients, or selling something that might count as a taxable service all raise questions federal guidance does not answer. Two of the guides below deal with exactly that.
A filed return is not final. Amendments on Form 1040-X are ordinary, generally available for three years, and a much better outcome than leaving a known error in place.
5 guides, in the order they usually matter
- Schedule C, line by line, for people who have never filed one Every line of Schedule C, with the exact IRS caption, what a freelancer actually puts there, and where the common expenses go. Includes a worked example.
- You moved states mid-year. Which one taxes your freelance income? Two part-year returns, income split by when you earned it, and the states that keep taxing you until you prove you really left.
- Do freelancers have to charge sales tax on services? In most states, services are not taxable — but the exceptions are growing, and digital products are treated very differently from the work that produced them.
- You made a mistake on your return. How to fix it Form 1040-X, three years to file it, and the cases where you should do nothing at all — because the IRS fixes some errors itself and amending would duplicate them.
- Do you need an accountant? What one costs, and when it pays for itself A straightforward freelance return does not need one. An S-corp election, a multi-state move or employees does. The thresholds and the fees.