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Get the free IRS Form 3870 Tax Adjustment Request

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What is Form 3870

The IRS Form 3870 Tax Adjustment Request is a federal tax form used by taxpayers to request adjustments to their federal tax returns or accounts.

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Who needs Form 3870?

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Form 3870 is needed by:
  • Individual taxpayers filing a tax adjustment
  • Tax preparers assisting clients with adjustments
  • Approving officials overseeing tax adjustment requests
  • Tax professionals managing federal tax compliance
  • Organizations correcting tax return errors
  • Auditors requiring verification of tax adjustments

How to fill out the Form 3870

  1. 1.
    To start, access pdfFiller and search for 'IRS Form 3870 Tax Adjustment Request'. Open the form to begin editing.
  2. 2.
    Once the form loads, familiarize yourself with the interface. Use the tools available to navigate around the document easily.
  3. 3.
    Gather all necessary information before completing the form, including your Taxpayer Identification Number (TIN), name, address, and details regarding the adjustments you intend to report.
  4. 4.
    Begin filling in the form by clicking on the appropriate fields and entering your data as required, making sure to provide accurate details regarding your adjustment.
  5. 5.
    Check the boxes corresponding to the adjustments you are applying for. Utilize the fillable text boxes for specific date and description entries.
  6. 6.
    After you’ve completed all fields, review your entries carefully to ensure accuracy, especially the taxpayer's information and adjustment details.
  7. 7.
    Once everything is verified, proceed to sign the document electronically. Ensure all required signatures from the taxpayer, preparer, and approving official are added.
  8. 8.
    After signing, save your completed form by clicking on the 'Save' button in pdfFiller. You can also download a copy for your records or submit directly if required.
  9. 9.
    If submitting electronically, follow the inbound submission processes recommended by the IRS, or simply download and print the form for mailing.
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FAQs

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Any taxpayer wishing to request an adjustment to their federal tax return or account is eligible to submit the IRS Form 3870, including representatives authorized to act on behalf of the taxpayer.
There is no specific deadline for submitting Form 3870; however, it is recommended that you amend tax returns or request adjustments as soon as discrepancies are identified to avoid delays.
The completed IRS Form 3870 can be submitted electronically via IRS channels or downloaded and mailed to the appropriate IRS office. Ensure to follow provided submission guidelines.
Supporting documents such as previous tax returns, proof of income, or additional correspondence may be required. Check specific IRS guidance for your situation.
Common mistakes include incorrect taxpayer identification numbers, missing signatures, and not providing sufficient detail on the adjustments. Review the form thoroughly before submission.
Processing times for Form 3870 generally vary depending on the volume of requests at the IRS. Expect 6-8 weeks, but processing can be delayed due to incomplete forms.
Yes, you can request an amendment to Form 3870 after submission, but it’s advisable to resolve discrepancies promptly to maintain accurate tax records.
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