OK first let me state that liability laws and corporation laws vary from state to state so the actual application of the information I am posting may vary from state to state.(disclaimer hehe) Corporations and LLCs do provide you with a LOT of protection from personal liability in MOST situations. The whole point of a Corporation is people pooling their money and forming an entity that is legally seperate in nature. It was originally used in Europe in trading companies. You put money in, if it goes bust you only lose the money you invested nothing more, ie. you buy IBM stock if the company makes money you get paid a return on your investment based upon the number of stocks you own. If they lose money their creditors can never come after you for the debts IBM incurred, it is technically a seperate person. When say IBM makes money it is taxed by the IRS based upon how much money it made. IBM pays that tax BEFORE they send you a dividend check, then the IRS taxes you AGAIN when you report that dividend on your taxes so it is a DOUBLE taxation but your liability from suit is still there as compensation for the double tax. You can never lose your house because an IBM employee made a programming mistake that turned off a child's ventilator and killed him.
Now a subchapter S Corp. gives you the same liability protection as any other corporation but the IRS pretends to ignore the corporation and simply taxes the profit or loss the subchapter S corporation made according to the stock percentage you own. If you own 25% then you get a K1 tax form from the corporation stating what amount of profit or loss is attributed to you. Corporations have many formalities you must follow to keep the limited liability status, like a prohibition on comingling money. That basicly means you treat the corporation money like your money and not like it belongs to someone else. Your property manager does not use the rent money he collects for you to make his car payment, that would be stealing. If you use your corporations money to pay your car payment your protection from liability can be lost by a court action called piercing the veil.(There are many other ways to pierce the veil) General partnerships never have protection from liability, in fact if a general partner makes a very bad deal and signs a mortgage for a million dollars then loses it all gambling all the other partners are equally liable for the mortgage even though they never received a penny of the proceeds. General partnerships are very dangerous as far as liability goes. Your partner can do something to cause you to be liable even if you did nothing wrong. People still like doing partnerships and you only get taxed once. The first LLC was formed in Wyoming I believe in the 1960s or 70s. Two oil companies did a joint venture under the new Wyoming LLC law and when they submitted it to the IRS they were given pass through tax status. (A guy named Bill Bagley did a book about most of this back in the 80s) This was huge. Companies could actually form a partnership that allowed profits to be split differently than percentage of ownership. So if 1 company owned oil drilling rigs and another owned oil leases they could make a deal and be taxed according to a seperate contract not percentage of stock ownership, but they did NOT have partnership liability. Subchapter S corporation stock cannot be owned by a corporation. So if you form 5 layers of corporation to protect from liability in a risky venture you pay taxes 5 times. LLCs allowed the formation of successive companies but still gave pass through tax status. You dont need a company if you only invest in the stock market, or buy CDs, etc. It is generally riskier investments that cause you to form a company. Most subchapter S corporation have shareholders who are actively involved in the day to day operations of the company. This is very important! As an owner of an LLC you are granted immunity from liability if you follow all of the corporate liability rules, BUT you are NOT shielded from liability for your own acts of liability for acts you personally perfom. If an IBM employee gets drunk at an IBM party and drives his IBM owned car home and kills a pedestrian in a crosswalk a shareholder cannot be personally sued for the damages. But even if you own IBM stock, if you were the IBM employee's boss and you poured his drinks and had the authority to stop him from driving the IBM car home you will be sued and you will lose. Having a corporation does not shield you from actions that you PERSONALLY do or do not do that harms another.
That being said the rules to follow to keep corporate protection are not really that tough, and they really do offer HUGE liability protection. Most lawsuits today are based on inaction, not action. Failing to install new concrete steps when the old ones have a 5 degree slope so a guest slips on ice and falls and beaks a hip, failing to turn down the temperature on the coffee pot after 2 customers complained and received 3rd degree burns(the McDonalds case). It is extremely difficult to get a personal judgement from the employee in these cases. If you personally install the furnace that is improperly vented and in violation of code and the family dies of carbon monoxide poisoning get out your personal checkbook. If you buy a home and it has a defective furnace and you dont realize it and someone dies only the company is liable. If you have 10 million in assets in a company or an LLC and get a 5 million dollar judgement against it you just lost 5 million. If you have 10 LLCs or Corporations with 1 million each and one gets a 5 million dollar judgement you just lost a one million dollar LLC but still have 9 worth one million each. (thus the value of multiple companies or LLCs)
The above information is over simplified, talk to an attorney and your tax accountant for more specific advice on what is best for you in your state. ALLWAYS USE A CORPORATION OR LLC AND ALLWAYS BUY INSURANCE. In Wyoming the filing for either is 100$ and the annual fee is usually 50$. Sorry this was so long. JerryW.