Pro rata is a Latin term that means "in proportion." The term is often used to refer to the practice of allocating or distributing something (such as a resource, a benefit, or a liability) in proportion to the size or value of a particular share or interest.

For example, if an individual has a 20% share in a business and the business is required to pay a fee that is based on the size of the business, the individual's share of the fee would be calculated on a pro-rata basis. This would mean that the individual would pay 20% of the total fee, based on their share of the business.

Pro rata calculations are often used in a variety of contexts, including finance, insurance, and employment. They can be used to determine an individual's share of a benefit or a liability or to allocate a resource in proportion to the size or value of a particular share or interest.

If you have any questions about pro-rata calculations or need help with a pro-rata allocation, you may want to seek the advice of a financial or legal professional.