From what I’ve seen, different magazines have different policies on this, so make sure to check their guidelines.
Fireside magazine, for instance, specifies:
‘published’ includes work posted on Patreon or on a blog
While Lightspeed says they’ll accept reprints, but doesn’t really specify what counts as “published”, using language similar with what I’ve mostly seen:
Stories that have never before been published in the English language would be considered “original.”
In Clarkesworld’s guidelines, they specify:
If you are unfamiliar with the term “First Rights,” an explanation can be found here.
Which links to an article, which states:
Here are a few examples of situations where a story has been published:
- it appears on a publicly available website (like Wattpad or a forum, even one with membership restrictions)
But then again, not every magazine states that they’re looking for First Rights, so take that with a grain of salt.
I’ve also seen a magazine whose guidelines stated something along the lines of “if you’re not sure if your story counts as previously published, submit anyway,” but at the moment I can’t find that source.
So I get the impression that having a short story on Wattpad will definitely disqualify it from some magazines, and it may or may not count as a reprint for others, depending on their perspective. I’d say if your story fits the publication and you’re otherwise being respectful and following their guidelines, it can’t hurt to try.