The setup fee pays for establishing the agreement. It is separate from tax, interest, penalties, and any card-processing fee.
What continues during the plan
The IRS continues charging interest and applicable penalties on the unpaid balance until it is paid in full. A short-term plan has no setup fee, but it does not stop those additions. A long-term installment agreement normally has a setup fee, with lower or waived charges available in certain low-income and direct-debit situations.
Does the failure-to-pay penalty change?
The IRS explains that the failure-to-pay penalty can be calculated at a reduced monthly rate while an approved installment agreement is in effect and the taxpayer filed the return on time. That does not reduce the rate to zero, and other penalties may follow different rules. Use the account and notices to see the actual charges for the tax period.
What happens to a future refund?
The IRS generally applies a federal refund to the tax debt. The refund does not replace the scheduled monthly payment, so continue paying under the agreement unless the IRS changes or closes it.
How to avoid default
- Pay at least the required amount by the monthly due date.
- File every required return on time.
- Pay current federal taxes, including estimated taxes when required.
- Update the agreement through an official IRS channel if the amount is no longer affordable.
- Respond promptly to a default or termination notice.
Recommended action
Pay more than the minimum when possible because reducing principal sooner generally reduces future interest and penalty additions. Before making a change, sign in through IRS.gov or follow the current notice. This page does not calculate an individual's tax balance or recommend a particular debt strategy.
Official sources
- IRS — Online Payment Agreement costs
- IRS — payment-plan rules and managing an agreement
- IRS Topic No. 202 — Tax payment options
- IRS — penalties