Yes, online installment loans can be paid off in one lump sum. The following are specific instructions:

1. Flexible repayment methods: Installment online loans usually have a variety of repayment options to choose from, including equal monthly principal and interest, equal principal or early repayment, etc. If you have enough funds, you can choose to pay off the remaining principal in one lump sum.

2. Early repayment rules: Most online installment loan platforms allow borrowers to repay early. Normally there are no additional fees for early repayment. When you pay off your loan early, you only pay the remaining principal amount. This makes it possible to pay it off in one lump sum.

3. Save interest expenses: By paying off the installment online loan in one go, you can avoid future interest expenses. Each repayment will incur certain interest charges, and a lump sum payment can reduce or eliminate these charges.

Summary:

Instalment online loans can be paid off in one lump sum because the repayment method is flexible and the early repayment rules allow the borrower to repay in full at any time. A lump sum payment can help borrowers save on interest payments and close the loan early.

Extended information:

- When considering a one-time repayment, it is recommended to understand the relevant contract and the early repayment policy of the online loan platform to ensure that there are no hidden fees or restrictions.

- Paying off a loan in one lump sum may put greater pressure on personal cash flow, so you need to consider your own financial situation and repayment ability before making a decision.