How to Fill Out Form 870

Form 870 at a glance

What it is: Form 870 (Rev. March 1992) is the Waiver of Restrictions on Assessment and Collection of Deficiency in Tax and Acceptance of Overassessment of the Department of the Treasury-Internal Revenue Service.

Who signs: If you filed jointly, both you and your spouse must sign.

A filled-in Form 870 example: a taxpayer fills the top of the form

Form 870 example filled out, example: a taxpayer fills the top of the form
Jane Sample fills the top of Form 870 for one tax year. Her deficiency has no penalties, so Penalties stays empty; Date received stays empty until she sends it. The picture shows the filled lines, and every value in it is made up. The amount is an increase in tax, not a decrease. Jane uses a social security number, not an employer identification number.

How to fill out Form 870, box by box

Names and address of taxpayers, and the identification number

Names and address of taxpayers (Number, street, city or town, State, ZIP code).

Social security or employer identification number.

Increase (Decrease) in Tax and Penalties

Form 870 example filled out, increase (Decrease) in Tax and Penalties

Increase (Decrease) in Tax and Penalties: for each Tax year ended, the Tax and the Penalties.

If your situation is different

You filed jointly

If you filed jointly, both you and your spouse must sign.

The waiver is for a corporation

If this waiver is for a corporation, it should be signed with the corporation name, followed by the signatures and titles of the corporate officers authorized to sign.

An attorney or agent signs

An attorney or agent may sign this waiver provided such action is specifically authorized by a power of attorney which, if not previously filed, must accompany this form.

A fiduciary signs

If this waiver is signed by a person acting in a fiduciary capacity (for example, an executor, administrator, or a trustee) Form 56, Notice Concerning Fiduciary Relationship, should, unless previously filed, accompany this form.

The change affects your State income tax

The Department of the Treasury-Internal Revenue Service has agreements with State tax agencies under which information about Federal tax, including increases or decreases, is exchanged with the States.

If this change affects the amount of your State income tax, you should file the required State form.

The Service disallows a later claim

If you later file a claim and the Service disallows it, you may file suit for refund in a district court or in the United States Claims Court, but you may not file a petition with the United States Tax Court.

Common questions about Form 870

What is Form 870?

Form 870 (Rev. March 1992) is the Waiver of Restrictions on Assessment and Collection of Deficiency in Tax and Acceptance of Overassessment of the Department of the Treasury-Internal Revenue Service. The Department of the Treasury-Internal Revenue Service will consider this waiver a valid claim for refund or credit of any overpayment due you resulting from any decrease in tax and penalties shown in Increase (Decrease) in Tax and Penalties, provided you sign and file it within the period established by law for making such a claim.

Sources

[1] Form 870 (Rev. March 1992), Waiver of Restrictions on Assessment and Collection of Deficiency in Tax and Acceptance of Overassessment, Department of the Treasury-Internal Revenue Service (the Official source link on this page).

IRS Form 870 Waiver PDF Details

If you consent to the assessment of the deficiencies shown in this waiver, sign and return the form in order to limit any interest charge and expedite the adjustment to your account.

Tax Court: You will not be able to contest these years in the United States Tax Court, unless additional deficiencies are determined for these years.

Spouse: If you filed jointly, both you and your spouse must sign.

Corporation: It should be signed with the corporation name, followed by the signatures and titles of the corporate officers authorized to sign.

Attorney or agent: May sign if specifically authorized by a power of attorney which, if not previously filed, must accompany this form.

QuestionAnswer
Form NameIRS Form 870 Waiver
Form Length2 pages
Fillable?Yes
Fillable fields80
Avg. time to fill out6 min
EditionRev. March 1992
Other namesForm 870, IRS Form 870, Form 870-AD