How Arc Raiders stash upgrades work
Your stash is the persistent storage at your Speranza underground base, and it starts at 64 slots. You expand it to the maximum 280 slots through ten sequential upgrades bought with coins at the stash's Expand button — no rare materials or workshop prerequisites are needed, it's purely a coin investment. The costs climb steeply, from roughly 15,000 coins for the first upgrade to around 200,000 for the final one, for a total near 575,000 coins. That's the catch: coins come from surviving extraction runs, so filling the stash means a lot of successful raids. Our players farm those coins on your account behind a region-matched login (a self-play option lets you join every run instead of sharing the account).