Fees

Manna has a minimal fee structure with no ongoing interest charges.

Fee Schedule

Fee	Base Rate	Type	When Charged
Borrowing fee	0.5%	One-time	When minting solUSD
Redemption fee	0.5%	One-time	When redeeming solUSD for SOL

That's it. No interest, no maintenance fees, no withdrawal fees.

Borrowing Fee

The borrowing fee is charged on the solUSD amount you mint:

Fee = Borrowed Amount × Fee Rate

At the 0.5% base rate, borrowing 10,000 solUSD costs 50 solUSD.

Dynamic Adjustment

The borrowing fee rate is not fixed at 0.5% — it adjusts dynamically:

• Increases when redemption volume is high. This deters arbitrage loops where users borrow, redeem, and repeat.
• Decays back to the 0.5% base rate over time when redemptions are low.

The fee rate can rise above 0.5% but cannot fall below it.

Redemption Fee

The redemption fee is charged when redeeming solUSD for SOL:

Fee = Redeemed Amount × Fee Rate

Dynamic Adjustment

The redemption fee follows the same dynamic mechanism as the borrowing fee:

• Increases with high redemption volume
• Decays back to 0.5% over time

This ensures that during periods of heavy redemption (peg pressure), the cost of redemption rises — naturally slowing the process and protecting borrowers from excessive position closures.

No Hidden Costs

• No interest accrues on your debt
• No fees for adding or withdrawing collateral
• No fees for repaying debt
• No protocol-level gas surcharges