Fully-paid share is a term used to describe a security in which the shareholder has paid the full purchase price and all subsequent expenses associated with owning the share. Synonyms for fully-paid share include paid-up share, non-assessable share and all-inclusive shares. These terms are used interchangeably depending on the jurisdiction. Paid-up shares are popular among investors because they offer limited liability - shareholders are only responsible for what they have paid for the share and nothing more. They also provide a solid foundation for a company's capital structure, making it more attractive to potential investors and lenders.