Two cents....
Been on my own for over 20 years as a consultant, use Chapter S. In NY, LLCs are required to advertise in the newspaper for a period of time, expensive.
What ever entity you choose, keep the entity and your personal finances separate or your protection from liability flowing to you is negated; in a lawsuit lawyers look into this.
I carry no company insurance, but have umbrella coverage for >1 mil on home owners insurance, cheap add-on. Never been sued.
Nevr had an audit or had a tax penalty but the government has tried a few scams on me, mainly by losing payments and forms. The biggest scam, they lost dissolution papers on a Corporation, then tried to bill me for penalties 10 years latter, to the tune of $10,000 (in 1982)...
Do not play games with the tax authorities. Do not cheat on your taxes. The government waits just under 3 years (can be latter), then informs you of the interest and penalties (18% compounded on principle and penalty). Declare all cash, as the government will track it down. Get a good accountant, as a minor mistake on any form can cost hundreds, plus trigger audits. Best to have third party do payroll, who absorb penalties for any mistakes or late forms. Send all forms to the government certified, receipt request, otherwise the forms hit the waste basket. I pay tax liabilities/insurance with money orders, this way your not liable for "lost" payments, as long as you have the stub receipt; in court if you have the stub it is considered proof of payment, a check does not provide this protection. Keep all receipts, even if you have credit card statements. Keep all tax information much greater then 3 years, I still have tax info from 1982.
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Chernobyl disaster..a must see pictorial