You may view your individual estimated tax payment history and account balance though the Online Tax Center. When reviewing your account balance, please note that it may take 10 to 15 business days for payments to post to your account. Review your account balance carefully.

If you don’t agree with your account balance

• Individuals - Reconcile discrepancies through the Online Tax Center.
• Estates or Trusts - Complete Form IT-2106.1, Reconciliation of Estimated Income Tax Account for Fiduciaries and mail it immediately to the address shown in the instructions.

For more information, see Publication 94, Should You Be Paying Estimated Tax in 2009?