Half-fiend fly speed: What constitutes base land speed?

[Joex The Pale]

I am looking at adding the half-fiend template to a creature with levels of barbarian. The racial base speed is 30', which is raised by the barbarian levels to 40'. Which to do use for the fly speed? I'm guessing the racial 30' speed, since it's an inherent template. But what if it was an acquired template, gained after the barbarian levels?

[Nothing]

Since the term "Base" land speed is not clearly defined in the rules, this is very much up to DM discretion.

Personally, I would consider any effect that called itself a "bonus" to speed as not part of one's "base" land speed (and barbarian's fast movement ability does call itself a bonus).

It's not unreasonable at all, though, to draw the line to include class bonuses or feats, but magic items and spells really should never count.

I don't think it matters when the levels or template apply in any case, either the ability changes your base speed or it doesn't.

[LazarX]

Templates are applied to the base creature before any class effects come into play.
So the fly speed is calculated by by the barbrain's race base speed of 30.