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IRS Letter CP521

Why are you receiving this letter?

You received IRS letter CP521 because you have entered into an installment agreement with the IRS and your next payment is due.

EasyYou agree with the notice

You are in a payment agreement, and can pay your next installment. 

You can pay online at www.irs.gov/payment.

Medium You don’t agree with the notice, but owe less than $25,000
  • Your tax balance is less than $25,000.
  • You don’t have unfiled tax returns.
  • You are unable to pay back the taxes in full.
  • You would like to discuss this with someone not working for the IRS to understand what is going on and the options you have.
Serious You don’t agree with the notice and owe more than $25,000
  • Your tax balance is greater than $25,000.
  • You have unfiled tax returns. 
  • You are unable to pay back the taxes in full.
  • You would like to negotiate down the tax balances.

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      What you should do?

      Read your notice carefully. The Notice explains the amount of the monthly payment and the due date. We recommend mailing your payment 10 days before the due date.

      IRS letter CP521 is for one tax year only. In this Notice example, the tax year is 2011. If you owe for multiple tax years, the total tax balance owed will not be displayed on this letter.

      What can you expect next?

      If you make your payment on time, you will receive this letter prior to each payment being due.
      If you are unable to pay, the IRS allows one missed payment without any questions. However, it is always in your best interest to call the IRS at the number in the top left corner of the letter to inform them of your situation.