B. Onus probandi

Sun, 03 May 2026 10:19:43 +0000

# Understanding B. Onus Probandi: The Fundamental Legal Principle of Proving an Assertion In legal discourse, the foundation of any claim rests on one pivotal concept: probative burden—the duty to prove what one asserts. Among the nuanced terminology used in legal theory, B. Onus Probandi stands out as a critical principle governing the obligation to demonstrate facts essential to a case. Although not always highlighted in mainstream legal education, understanding B. Onus Probandi is indispensable for anyone navigating law, contracts, evidence, or dispute resolution. --- ## What is B. Onus Probandi?