Most open IRS cases are closed in one of two ways, the case is either closed via a Hardship Status or an Installment Agreement.
How does the IRS determine how they are going to close your case? By simply completing a Form 433A or Form 433F financial statement from you.
Based on your financial statement and the documentation that goes along with the statement, the IRS will make a determination.
If your case does not fall under the hardship rules, the Installment Agreement will be a payment plan that allows you to pay over a period of time.
The IRS has the right to review the Payment Agreement from time to time but most agreements end with the statue of limitations expiring on the case.