The IRS Online Payment Agreement system lets you apply and receive approval for a payment plan to pay off your balance over time. The IRS sent Letter 2840C to notify you that an installment agreement has been set up, and show you the payment amount, due date, and payment address.Request an installment agreement and, if necessary, a Collection Appeals Program (CAP) hearing prior to additional IRS collection activity (lien or levy). Explain why you believe an adjustment or correction is necessary or why you require a payment plan or installment agreement. Include a Call to Action.