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Seigniorage

Create your own coins and bills to build player-driven economies.

NeoForge
Loaders
NeoForge
Downloads on Modrinth
904
Followers on Modrinth
7
versions
5
Updated
May 31, 2026May 31
Published
in 2026
Having fun with bills — You can have fun tossing bills and coins. · swipe

At a glance

Runs on NeoForge
For Minecraft 1.21.1
Needed in the game and on the server
Latest version — 1.2.2 from May 31, 2026
License MIT — free
Where it's needed
In gamerequiredOn serverrequired

Needed both in the game and on the server

Game versions1.21.1

Create your own currencies, design denominations, mint coins and print bills, then use them in player-driven trade systems.

Summary

Seigniorage gives servers the tools for all players to run custom economies built on player determined value.

Features

  • Create custom currencies with unique name, 3-letter code, unit name, and 4x4 symbol.
  • Design denomination sets as coins and bills with customizable appearance.
  • Create issuance orders from the Currency Desk and process them into real money items.
  • Use Wallets, Safes, and Netherite Safes to store and transport physical money.
  • Handle player transactions through Voucher + Cash Register payment flows.
  • Track economy data such as total issued and decommissioned value.

How To Create A Currency

  1. Place and open a Currency Desk.
  2. Create a new currency by filling:
    • Name
    • Code (3 letters, e.g. USD)
    • Unit name
    • 4x4 symbol

How To Create Coins And Bills

  1. In Currency Desk → Denominations, click Create Denomination
  2. Fill name, value and personalize the palette, then click Create
  3. Go to Currency Desk → Denominations and click Create Issuance Orders.
  4. Fill denomination(s) amount and number of copies.
  5. Make sure you have enough materials for each copy.
  6. Process orders in a Coin Minter for coins and Bill Printer for bills,
  7. Collect your issued money and circulate it in trade.

 


How To Use Voucher Payments (Cash Register)

  1. Create a Voucher Book and right-click to open the voucher writer.
  2. Fill at least Amount and Currency Code, then confirm to create a Voucher.
  3. Be sure to lock your Cash Register (merchant side).
  4. Hold an unpaid voucher you issued and right-click the locked register to set payment mode.
  5. The customer validates payment options (exact/lower/upper).
  6. If exact exists: customer pays directly. Otherwise: customer offers lower/upper and merchant accepts.
  7. On execution, money moves from customer to register (with change when required), and the voucher is marked as paid.

 


Why Use Seigniorage?

If you want official server currencies, faction currencies, roleplay economies, and player-created currencies, Seigniorage is the mod for you.

Planned Content

  • More utility commands for servers (e.g. give players issued coins/bills)
  • Player-managed banks
  • Bank accounts
  • Digital balances
  • Credit lines
  • Credit and debit cards
  • ATMs
  • POS machines

Acknowledgements

Special thanks to glionox on itch.io for public assets used and adapted in parts of this mod.


any feedback in the comments is welcome.

FAQ

How to install Seigniorage?

Install NeoForge for your Minecraft version, download Seigniorage for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Seigniorage support?

Seigniorage has builds for Minecraft 1.21.1.

Is Seigniorage needed on the server?

Needed in the game and on the server

License and source
MIT Licensefree to use and share with credit to the author
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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