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You can make monthly payments through an installment agreement if you're not financially able to pay your tax debt immediately. However, you will reduce or eliminate the amount of penalties and interest you pay and avoid the fee associated with setting up an installment agreement if you pay your tax bill in full. If you cannot pay the full amount within 120 days, the fee for setting up an agreement is:
If you can pay the entire amount in 120 days then you can avoid the fee.
There are three ways a taxpayer can apply for an installment agreement:
If you do owe $33k then applying online will not be an option for you. Since you have not received a notice yet you will need to send the Form 9465 and the Form 433F to request the payment plan. Please understand that the interest on your tax liability will continue to accrue until the entire amount is paid.