Interest
What borrowing costs, and when you pay it.
How interest works
Interest builds up on the SOL you borrow for as long as the loan is open. You pay it when you repay, together with the SOL.
Repaying early is always allowed and you only pay interest for the time the loan was open.
The rates
Rates are set with the loan program, before lending opens, and will be listed per coin on the markets page. OtterLend does not publish a rate before it can honour it, so the markets page reads At launch until then.
Fees
Besides interest there is a fee on liquidations, paid out of the collateral that is sold. It is set with the rates.