The Mercenaries League in Path of Exile 3.26 is upon us, and the race to amass PoE Currency is on! Choosing the right maps is crucial not only for leveling but also for maximizing your PoE Currency buy power. This tier list will provide insights into the best maps to grind, optimizing your efficiency and ensuring you have enough PoE Currency to buy PoE Currency for those essential upgrades.

This tier list considers several factors, including layout, boss difficulty, mob density, div card drops, and potential for league mechanic interaction. Remember that your personalized experience might vary based on your build, playstyle, and investment in map modifiers.

S-Tier: The Currency Powerhouses

These maps represent the pinnacle of efficient farming, providing outstanding experience, valuable drops, and rewarding encounters with league mechanics.

Crimson Temple: This map is a consistently favored option due to its straightforward design, high density of monsters, and valuable divination card drops such as "The Apothecary." It is also excellent for engaging in Heist content if that is your preference. The boss is relatively easy to defeat, ensuring a smooth mapping experience.
Burial Chambers: Renowned for its divination card "The Doctor," Burial Chambers continues to be a formidable choice. Although the card itself is exceedingly rare, the map features decent monster density and a relatively uncomplicated layout. It excels when paired with league mechanics that enhance monster packs.
Atoll: Featuring a linear layout and good monster density, Atoll is yet another reliable option. It includes the divination card "The Island King," which can be quite valuable, and the boss is easily manageable. Its simplicity makes it ideal for players who favor a streamlined mapping experience.

A-Tier: Excellent Value With Slight Drawbacks

These maps offer great rewards but might have slightly less consistent layouts or more challenging bosses.

Strand: A classic choice for leveling and early mapping. Its linear layout makes it easy to clear, and the boss is incredibly simple. It's not the most lucrative in terms of currency, but its accessibility and ease of completion make it a reliable option.
City Square: Decent monster density and a layout that's generally easy to navigate. The "The Saint's Treasure" divination card is a welcome bonus. The challenge lies in the boss, which can be tricky for some builds.
Jungle Valley: Offers a good balance of monster density and a relatively straightforward layout. It's especially good for builds that excel at clearing large packs of monsters quickly. The "The Flora's Gift" card is a nice addition to your potential loot.
Ancient City: While the layout can be a bit confusing at times, the high monster density and excellent potential for Delirium encounters make it a worthwhile choice. Be prepared for a more challenging mapping experience.

B-Tier: Reliable Choices with Specific Advantages

These maps remain functional, although they may not provide the same level of efficiency for PoE Currency farming as the higher-tier alternatives. They can be beneficial for particular builds or league mechanics.

Cemetery: Reasonable monster density and a satisfactory layout. This map can be advantageous for certain builds that perform well in open spaces.
Toxic Sewer: The narrow corridors may pose challenges for some builds, yet the monster density can be quite favorable.
Overgrown Shrine: Presents a combination of open spaces and corridors, making it appropriate for a range of builds.

C-Tier: Best to Avoid Unless Absolutely Necessary

These maps typically suffer from subpar layouts, low monster density, or challenging bosses, rendering them less effective for currency farming. It is usually advisable to transmute and reroll these maps unless there is a specific justification for utilizing them.