A limited-liability company ("LLC") is commonly referred to as a "hybrid" business structure, meaning that it shares characteristics of both a corporation and a sole proprietorship. It allows its owners to insulate themselves from personal liability for business debts, does not require the payment of separate business taxes (the tax "passes through" to its owners), allows for a great deal of flexibility with regards to its organizational structure, and is subject to fewer regulations and restrictions than are other types of business structures.[1] Establishing such a company in Wisconsin is a rather straightforward process.

In the United States, a limited liability company is a business entity type that combines the pass-through taxation of a partnership or sole proprietorship with the limited liability of a corporation, creating the best of both worlds for business owners. LLCs have rapidly become one of the most popular business structures for new and small businesses, largely because they are considered to be simpler and more flexible than a corporation.
In a few states, you must take an additional step to make your company official: You must publish a simple notice in a local newspaper, stating that you intend to form an LLC. You are required to publish the notice several times over a period of weeks and then submit an "affidavit of publication" to the LLC filing office. Your local newspaper should be able to help you with this filing.

All business filings were manually maintained prior to 1973. The office then began entering new filings into a computerized system. Data for businesses that were formed prior to 1973 was entered into the computerized system if they were still active at that time. The data for businesses that were not active in 1973 and have not reinstated, has been partially entered into the system. Images of approved filings were maintained on microfilm prior to 1997 when office began converting the film for all active businesses to a computerized format. Newly submitted filings since that time have been created and maintained in this computerized format. 

Some businesses are prevented from forming an LLC, however. Typically financial companies such as banks, financial trust companies and insurance agencies can't file as an LLC. LLCs are sometimes limited for industries in certain states, too. For example, if you live in California, you can't form an LLC if you're an architect, accountant or licensed health care provider. Check out our LLC information by state for more details on your state.
Versatile Tax Status One of the most advantageous aspects of the LLC is that it has the ability to choose how it is treated as a taxable entity. According to the IRS an LLC is, by default, federally taxed as a partnership (in the case of a multi-member LLC) or as a sole proprietor (in the case of a single member LLC). The LLC, however, may elect to be taxed as a C- or S-corporation at any time the members so choose.
Self Employment Taxes Although we listed Pass Through Taxation as an LLC benefit, it can also be a disadvantage. Oftentimes the taxes that are passed through and reported as personal income of LLC members will be higher than the taxes at a corporate level. You will also still pay for federal inclusions such as Medicare and Social Security. If you're confused if this business structure will be the right tax choice for you, it's a good idea to speak to your accountant or financial advisor.
Where the equipment you use in your business was acquired as a gift, you may report your estimate of its current market value on the Business Property Statement (that is, what you think it would sell for in the open market place). Enter that estimated value in the most current year's cost line and add a note indicating that the entry is an estimate.
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