Corp., Inc., Corporation, Incorporated: used to denote corporations (public or otherwise). These are the only terms universally accepted by all 51 corporation chartering jurisdictions in the United States. However, in some states other suffixes may be used to identify a corporation, such as Ltd., Co./Company, or the Italian term S.p.A. (in Connecticut; see under Italy). Some states that allow the use of "Company" prohibit the use of "and Company", "and Co.", "& Company" or "& Co.". In most states sole proprietorships and partnerships may register a fictitious "doing business as" name with the word "Company" in it. For a full list of allowed designations by state, see the table below.
LLCs have fewer ongoing requirements compared to their corporation counterparts. For example, an LLC is not required to keep minutes or hold annual meetings. An LLC also does not have a board of directors, and isn't is held to the same record keeping standards of a corporation. Keep in mind that the state of incorporation in will have its own set of annual requirements. That includes filing the required business licenses and permits, which vary from state to state. Be sure to check in with your Secretary of State to ensure you don't accidentally miss any required filings.
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.