Professional indemnity insurance protects professionals from costs arising from mistakes made in their work. It covers liabilities from negligence, loss of documents or data, copyright or confidentiality breaches, and defamation. The cost of professional indemnity insurance depends on the amount of coverage needed, the business activities, and income generated. It does not cover fines, pollution-related losses, injuries to employees, or pre-existing conditions. Having this insurance allows professionals to offer services without needing to account for potential future costs from errors.