Good question, @jimvad !
If you already have an installment agreement and you also expect to owe taxes for the current year, you must act quickly to request a change to your existing installment agreement. Once a new tax balance is assessed by the IRS, you will be considered in default of the current agreement. (which is what that means above.) You can request an amendment to the installment agreement online at that link I sent you, or Calling the IRS at 1-800-829-7650, or Visiting a local IRS office.
Take one of these steps before the due date for the tax year in question to avoid collections actions that will place your existing installment agreement in default.
The easiest way to amend your installment agreement is with the IRS online payment agreement tool. You can revise the type of plan, monthly payment due date, and payment amount. Good luck!
