USDfnBy Fuel Foundation

Borrow dollars.
Keep your FUEL.

Lock FUEL, stFUEL or ETH and borrow USDfn, Fuel's own dollar. 0% interest, nothing after.

Start borrowingLearn More

You lock

$15,000FUELstFUELETH

You borrow

10,000USDfn
Interest
0%
Your tokens
Stay yours
USDfn / USDCon o2

$1.00

1 USDfn is always worth $1. Hand it back and take $1 of collateral out, any time.

FUELstFUELETHAt least 150% backed
$1Redeemable peg
0%Interest, ever
150%Minimum backing
24,800,000Circulating supply

Borrow it or earn with it.

Borrow

Lock FUEL, stFUEL or ETH and draw dollars against it. Your tokens stay yours, ready when you repay.

66%
Of your collateral, at most
0%
Interest, for as long as you hold
Start borrowing

Earn

Park USDfn in the Stability Pool. When a vault drops under 150%, the pool settles its debt and you take its collateral at a discount.

~10%
Below market, on collateral
Anytime
Withdraw when no vault is under the line
Open the pool

How it works.

  1. LockCollateral goes in your vault.FUEL, stFUEL or ETH moves from your wallet into a vault only you control.
  2. MintDollars come out.Draw up to 66% of the vault's value as USDfn. 0.5% once, no interest.
  3. UsePut them to work.Trade on o2, earn in the Stability Pool, or spend with the Reserve card.
  4. RepayYour FUEL comes home.Return the USDfn whenever you like. The vault releases every token.

Don't need a loan? Swap USDC for USDfn on o2, one for one.

See what you can draw.

You can borrow up to
6,666 USDfn
One-time fee (0.5%)
33.33 USDfn
You owe
6,699.33 USDfn
Interest
0%

At the 150% minimum. Keeping 200% or more leaves room if prices fall.

Always worth
a dollar.

Any holder can turn USDfn back into $1 of collateral, any time, with no approval needed. Redeeming costs 1%. That offer never expires, so the price has a floor.

You redeem100 USDfnat $1 eachAny amount, from any wallet.
You receive$99worth of FUEL, stFUEL and ETHThe 1% redemption fee is why 100 USDfn becomes $99, not $100.

Built to hold.

No one votes on it

Parameters are fixed in the protocol. There is no governance to change them.

Prices from two oracles

Collateral is valued with Pyth and Stork.

A proven design

Built on Liquity's model, running since 2021.

Audited

Read the audit reports.

Where it works.

USDC

Trade on o2.

Swap USDfn / USDC.

Swap on o2 ↗
Essential
Reserve
Plus
Reserve
Pro
Reserve
Max
Reserve

Essential, Plus, Pro and Max, from 12.5K to 1.25M FUEL.

Earn it with Reserve.

Reserve members earn USDfn back on every card purchase.

Become a memberSee the Reserve card ↗
Resources

Questions.

Anyone can redeem 1 USDfn for $1 of collateral, less a 1% fee. That puts a floor under the price. It also trades against USDC on o2.