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- ACH – Automatic Payment Plan Agreement Form
- CISB – Collection Information Statement – Business
- CISP – Collection Information Statement – Personal
- CISI – Example For Completing A CIS Form
- IRS 2848 – Power Of Attorney And Declaration Of Representative for IRS Representation
- IRS 2848 – Instructions for Power Of Attorney And Declaration Of Representative for IRS Representation
- Form ATH-RTF (formerly 8821DE) – Authorization to Release Delaware Tax Information