What can you do as a free member?

Member benefits illustration

Create your free account today and unlock all our premium features and tools to enhance your gaming experience.

Member benefits illustration

Create your free account today and save articles to your watchlist and get notified when they're updated with new information.

Member benefits illustration

Create your free account today and save your favorite games for quick access later, synced across all your devices.

Member benefits illustration

By creating a Game8 account and logging in, you'll receive instant notifications when someone replies to your posts.

Comment rating feature illustration

By creating a Game8 account and logging in, you can make use of convenient features in the comments section, such as rating and sorting comments.

Site Interface

Guest
Free Member
Article Watchlist
Game Bookmarks
Cross-device Sync
Light/Dark Theme Toggle
User Profiles
Direct Feedback
Comment Rating

Game Tools

Guest
Free Member
Interactive Map Access
Interactive Map Pins
Interactive Map Comments
Interactive Map Pins Cross-Device
Check List
Event Choice Checker
Deck Builder Cross-Device
Message Board Notification
Message Board Cross-Device
Build Planner
Stat Calculator
Diagnostic Tool
Weapon/Armor Wishlist

Want more information?Learn more

Borderlands 4

How to Farm and Use Eridium

Add to Watchlist

★ 6 SHiFT Codes as of September 2025
☆ Black Market Location
★ Elemental Weakness Chart
☆ Legendary Weapons
★ Builds: Vex | Amon | Rafa | Harlowe
☆ How to Respec Skill Tree

How to Farm Eridium

Doing contracts and challenges are the best ways to earn Eridium in Borderlands 4. Learn all the ways to farm and use Eridium by reading our guide!

List of Contents

How to Farm Eridium

Contracts Challenges Replayable Missions

Earn Eridium from Contracts

Get Eridium from Bounties

Contracts are a missions found on contract boards in Safehouses. Similar to side missions, they have set goals you must accomplish to earn rewards but are completely optional to the Campaign.

Along with other rewards, contracts will grant Eridium as a reward. They will be unlocked when you reach your first safehouse, the Abandoned Post at the Coastal Bonescape.

Earn Eridium from Challenges

Get Eridium from Challenges

You can get a good amount of Eridium early game by completing Challenges. Most of them offer Eridium when you complete them, along with EXP and cash! To see the challenges you can complete, head to the Missions menu and select the Challenges tab.

Challenges Guide

Earn Eridium from Replayable Missions

Get Eridium from Challenges

Replayable Missions can also be a renewable source for farming Eridium when needed. Though not all missions will necessarily be short in this case, so you may be able to earn Eridium from doing Contracts or Bounties faster.

List of All Main Missions

How to Use Eridium

Harder Moxxi's Big Encore Machine

Eridium Encore

Eridium can be used to pay the fee of the Weekly Moxxi's Big Encore Machine available in Ultimate Vault Hunter Mode. This machine unlocked after the Ultimate Vault Hunter Mission: Big Encore, and will let you fight harder versions of a boss for more drops than usual. This appears to cost 100 Eridium per run.

How to Farm Bosses

Used for Specialization Respec and Firmware Transfer

How to Respec Specializations

Eridium is used for endgame features such as respecs for Specializations which are unlocked at the end of the Campaign, and Firmware Transfer Machines unlocked after the Ultimate Vault Hunter Mission: Zane's Firmware.

Specialization respec costs 5,000 Eridium and is done at the same respec machines used for the base skill trees.

List of All Specializations

Borderlands 4 Related Guides

TIPS & TRICKS

Beginner's Guide to Borderlands 4: Tips and Tricks

Tips and Tricks Guides

Progression Guides
What to Do First Level Cap: What is the Max Level?
How to Farm Bosses How to Level Up Fast
How to Farm and Use Eridium How to Get More SDU Tokens
How to Crush Jamming Device When Do You Get a Vehicle?
How to Unlock More Weapon Slots How to Increase Inventory Capacity
How to Get Stronger Weapons Can You Upgrade Weapons?
Red Chest Farm Location Should You Do Side Quests?
What is Ultimate Vault Hunter? -
General Guides
What to Buy and Sell First How to Respec Skill Tree
Golden Keys Guide All Bank Locations
How to Store and Transfer Items How to Drop Items
How to Claim Deluxe Edition Items How to Fast Travel
Can You Duel? Pearlescent Rarity
Level Scaling Explained How to Summon Vehicle
How to Link 2K Account Weapon Rarity vs Level
Lost Loot Machine Explained Weapons Levels Explained
Weapon Rarity Explained Fishing Guide
What to Spend Money On Movement Guide
Moxxi's Tip Jar Guide: Location and Rewards Should You Save on Golden Keys?
Legendary Vending Machine Locations Should You Wait on Opening Vaults?
Throwing Knife Farm -
Settings Guides
List of All Controls Matchmaking Guide
Difficulty Differences and How to Change Can You Change Character?
Best and Recommended Settings Can You Change FOV?
Can You Change POV? Compiling Shaders Fix
How to Save and Recover Lost Saves Is There a Minimap?
Combat Guides
Death Penalty: What Happens When You Die? Elemental Weaknesses Guide
Incendiary Damage Guide Shock Damage Guide
Cryo Damage Guide Radiation Damage Guide
Corrosive Damage Guide –

Comment

Post (0 Comments)

Author

Borderlands 4 Walkthrough Team
This article was created by Game8's elite team of writers and gamers.
    Leave feedback(Login required)
    Tell Us More About You!

    Rankings

    Popular Articles
    Message Board
    • We could not find the message board you were looking for.

    Gaming News

    Silksong Review | Hornet’s Ascension is Painfully Beautiful

    Silksong Review

    Popular Games

    Recommended Games

    All rights reserved

    ©2025 Gearbox Software. Published by 2K Games. Developed by Gearbox. Gearbox, Borderlands, and related logos are all trademarks of Gearbox Software, LLC. 2K and the 2K logo are trademarks of Take-Two Interactive Software, Inc. All other marks and trademarks are the property of their respective owners. All rights reserved.

    The copyrights of videos of games used in our content and other intellectual property rights belong to the provider of the game.
    The contents we provide on this site were created personally by members of the Game8 editorial department.
    We refuse the right to reuse or repost content taken without our permission such as data or images to other sites.

    Borderlands 4 Walkthrough & Guides Wiki

    Quick Access
    Guide Index

    Recommended Guides

    Main Missions

    Side Missions

    Builds

    Tips and Tricks

    Bosses

    Customizations

    Weapons

    Shields and Repkits

    Ordnances

    Skills

    Specializations

    Safehouses

    Auger Mines

    Vehicles

    Characters

    News and Game Info