You are welcome to make a larger payment than your current amount due and can pay off your loan at any time via your sofi.com account.
There are no prepayment penalties should you decide to make additional payments. Please note that additional payments are applied first toward fees and accrued interest, then toward the principal balance of the loan.
Any additional payment or payment greater than your monthly amount due will not change your regular payment schedule. Your normal amount will be due at the same time next month.