I am in California so this information will only apply to people there. Obligatory, I am not a lawyer.
Pre steps:
- pick a name that is available: https://businesssearch.sos.ca.gov/
- Register the domain name you are going to use
- Get a mailbox (like one at the UPS store, NOT a PO Box!) to use as your business address so you will not have to use your home address if it bothers you.
Now, for the real stuff -
1) Get a registered agent (even if you want to do it yourself, I recommend getting one anyway). I used freeregisteredagent.com for 1 year free. Required before you file the next step.
2) File an LLC-1 (http://bpd.cdn.sos.ca.gov/llc/forms/llc-1.pdf) articles of organization. It requires a $70 filing fee, send off the form and $70 money order.
3) Grab an EIN from the IRS: https://www.irs.gov/businesses/small-businesses-self-employe...
4) Wait for the Secretary of State of send a copy of the file articles of organization (form LLC-1). Now, file a Statement of Information, form LLC-12: http://bpd.cdn.sos.ca.gov/llc/forms/llc-12.pdf This is due within 90 days of the file date (on the filed LLC-1 form) All the information here will become public information. Send that in to the SoS with a $20 money-order and wait.
5) Use your filed articles of organization, the EIN you got in step 3, and a state issued personal ID to get a bank account. US Bank and CapitalOne Spark have free checking accounts for business, you can also try a credit union as local ones have them for free.
6) Look for any local licenses you need, some cities require business licenses, some require a "Business Operation Tax" (BOT) certificate - check your city or county website(s). CalGold is useful: http://www.calgold.ca.gov/
7) Conduct business, keep records, etc
Recurring items:
- An $800 minimum tax is due every year to the state of California.
- You must file a new LLC-12 (if the information has changed) or an LLC-12NC (if nothing about your LLC has changed) biannually (every two years).
See all forms here: http://www.sos.ca.gov/business-programs/business-entities/fo...