Addendum

An addendum is a written annex or supplement to an existing agreement, intended to amend, supplement or clarify specific provisions without replacing the original document. It has the same legal effect as the original contract and forms an integral part thereof.

The use of an addendum is relevant because it enables the parties to implement adjustments in a flexible manner, for example where circumstances change, without the need to prepare an entirely new contract. This promotes efficiency and reduces the administrative burden in legal transactions.

In practice, an addendum is commonly used in contexts such as real estate transactions, employment agreements or commercial supply contracts, for instance to record price adjustments or additional terms. All parties must sign the addendum to ensure its validity.