What it is
A ratification agreement, not a financial manual
STANAG 6025 is the NATO Standardization Agreement by which participating nations commit to apply AFinP-1, Edition B, the Allied Financial Publication that actually sets out financial principles and procedures for multinational support arrangements. The agreement itself states that "participating nations agree to implement the following standard", and the standard it names is AFinP-1, Edition B. The financial and procedural detail a finance or contracts officer would actually work from sits inside that publication, not in this cover.
What the agreement is meant to achieve
STANAG 6025 "establishes the financial principles and procedures applicable to the provision of support and services among participating nations as well as to the establishment of multinational arrangements". It aims, "to the extent possible", to "provide for standard cost principles between NATO and Partner nations", and it is meant to "be aligned with all NATO Capability Codes (CC) and Capability Statements (CS)". The agreement describes itself as underpinning an enabling capability behind many of those codes and statements: "the ability to formulate multinational agreements and arrangements". It names Consult, Command and Control and Stabilization and Reconstruction support coordination as areas where this shows up most, without limiting itself to those.
How it binds a nation
Like every STANAG, this is an agreement between nations, not a rule addressed to a supplier or contractor. The Letter of Promulgation records that the version in force "has been ratified by member nations, as reflected in the NATO Standardization Document Database (NSDD), is promulgated herewith", and "is effective upon receipt and ready to be used by the implementing nations and NATO bodies". Partner nations "are invited to adopt this STANAG". A nation that has ratified is expected to "advise the NSO of their intention regarding its implementation" and later to report on "effective implementation of the STANAG in accordance with AAP-03". None of this describes an obligation reaching a supplier directly; it describes how nations bring the agreement into force among themselves, and a supplier meets it only where a contract or tender says so.
Review and related documents
The agreement "is to be reviewed at least once every five years", with the result "recorded within the NSDD", and any nation or NATO body may put forward a change "through a standardization proposal to the tasking authority" for handling at that review. This is Edition 3, promulgated 22 January 2019, superseding STANAG 6025 Edition 2, without a stated date for that earlier edition. Alongside AFinP-1, the agreement names STANAG 2034, on mutual logistic assistance, as a related document, and points nations to AAP-03 for how implementation is reported. The Allied publication itself, AFinP-1, is not yet a page of its own here; the explorer link above is where to find our record of it.
What it does not cover
The agreement names no certification scheme, no audit process, and no specific cost-recovery mechanism. It does not say what a nation, or a party to one of these arrangements, may invoice or recover under it; that detail, if it exists, sits in AFinP-1's own text, which this cover does not reproduce.