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






About this Mod
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
- Place and open a Currency Desk.
- Create a new currency by filling:
- Name
- Code (3 letters, e.g. USD)
- Unit name
- 4x4 symbol
How To Create Coins And Bills
- In Currency Desk → Denominations, click Create Denomination
- Fill name, value and personalize the palette, then click Create
- Go to Currency Desk → Denominations and click Create Issuance Orders.
- Fill denomination(s) amount and number of copies.
- Make sure you have enough materials for each copy.
- Process orders in a Coin Minter for coins and Bill Printer for bills,
- Collect your issued money and circulate it in trade.
How To Use Voucher Payments (Cash Register)
- Create a Voucher Book and right-click to open the voucher writer.
- Fill at least Amount and Currency Code, then confirm to create a Voucher.
- Be sure to lock your Cash Register (merchant side).
- Hold an unpaid voucher you issued and right-click the locked register to set payment mode.
- The customer validates payment options (exact/lower/upper).
- If exact exists: customer pays directly. Otherwise: customer offers lower/upper and merchant accepts.
- 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.
Available Versions
How to Install Seigniorage on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set neoforge Loader
In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Seigniorage". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Seigniorage server crashes on startup – what to do?
Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Seigniorage compatible with neoforge?
Seigniorage officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Seigniorage – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Seigniorage consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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