must I also mention the salary or range in an internal job posting

Internal vacancies fall under the same rule

Yes, an internal vacancy too shows in most cases an initial salary or salary range, in the same way as an external vacancy does. Article 5 of the Directive makes no distinction between a position that is advertised externally and a position that is open only internally: it concerns the phase before the interview, not the question of who may see the vacancy. An employee who applies internally is in the same position as an external candidate — that person must be able to estimate before the first interview what the position will roughly yield, without having to ask about it themselves.

That does not make internal mobility different from external recruitment as far as transparency is concerned. Where it can differ, however, is the form: with an internal vacancy, sometimes more is already known about the existing remuneration structure, which means a salary range more readily aligns with what has already been communicated internally about other positions at the same level. This does not change the fact that the key question remains the same as with must a salary be included in my vacancy": a salary range or initial salary is the starting point, and the exact specification — a fixed amount or a margin — is a choice that is weighed separately, as can also be read in may I state a salary range instead of an exact salary.

Where that follows from Article 5

Article 5 of Directive (EU) 2023/970 concerns information that an employer provides before the interview, about the initial salary or the salary range for the position in question. The provision links that obligation to the phase of the procedure — before the interview — and to the position, not to the channel through which that position is offered. An internal vacancy is procedurally no different from an external one: there is a position, there is a candidate who still must apply or enter the interview, and that is precisely the moment on which the Directive bears.