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Oklahoma sales tax notices

Got a letter from the Oklahoma Tax Commission (OTC)? Find it below to see what it means, why businesses usually receive it, and what to do next.

Sources checked

Tax authority

Oklahoma Tax Commission (OTC) (opens in a new tab)

Disagree with a notice?

To dispute a proposed assessment, file a written protest (Form L-25, Application for Protest or Demand for Hearing) within 60 days of the date on the Notice of Proposed Assessment. File through OkTAP or by mail. Protests go to the OTC Legal Division and, if not resolved, can be heard by an OTC Administrative Law Judge. Within the 60 days you can instead ask for an extension of up to 90 more days. If you miss the deadline, you can file a 221(E) Request for Abatement within one year after the assessment becomes final.

Deadline: 60 days from the date of the Notice of Proposed Assessment

Source: Oklahoma Tax Commission (OTC) (opens in a new tab)

Failure to file

The authority has no return on record for a period it expects one, often because an account is open but filings stopped.

Failure to file

Proposed assessment for a report or return not filed

If a required return is not filed, OTC can work out the tax from information it has and mail a written proposed assessment. The same 60-day sworn protest right applies.

Why you got it

  • A required sales tax report or return was not filed
  • OTC's examination shows more tax due than was reported

What to do

  1. File the missing return(s) with your actual figures and pay the tax due
  2. If you disagree, file a written protest under oath within 60 days stating the amount in dispute, each error, the legal authority and the relief you want. You can request an oral hearing in the protest
  3. Once the tax is paid, you can request a waiver of penalty and/or interest in OkTAP, explaining what prevented you from filing on time

Before you pay penalties: check whether you can ask for them to be waived, and what the state needs paid first. How to ask

Response window: 60 days after the date on the proposed assessment

Source: 68 O.S. § 221 - Failure of Taxpayer to Make Report or Return - Tax Commission Examination - Taxpayer's Written Protest under Oath - Hearing - Office Audit (opens in a new tab)

Assessment

A proposed or final determination of tax owed, sometimes estimated when returns were never filed.

Assessment

Notice of Proposed Assessment

The official notice of any amount due after an audit. It requests payment and explains how to protest.

Why you got it

  • A field audit found tax due

What to do

  1. Review the findings against your records. If you need more time, request an extension of up to 90 more days within the 60 days
  2. If you disagree, file Form L-25 with supporting documents on OkTAP or by mail before the 60-day deadline
  3. If you agree, pay the tax and interest within the original 60 days; penalty is then waived automatically. You can also ask for a waiver of penalty and interest, which requires the tax to be paid in full
  4. If you cannot pay in full, call 405-521-2212 about payment options

Before you pay penalties: check whether you can ask for them to be waived, and what the state needs paid first. How to ask

Response window: 60 days from the date of the Notice of Proposed Assessment

Source: Business Tax Field Audit Guide for Taxpayers (opens in a new tab)

Audit

A request for records or notice that the authority is examining your returns.

Audit

Audit inquiry or notification letter

A letter telling you your business was selected for a field audit. It asks you to complete a questionnaire and return it with initial records.

Why you got it

  • Random computer selection
  • Analysis of return data, such as exemptions claimed
  • Information from the IRS, other states or other agencies

What to do

  1. Complete and return the questionnaire and requested records, which can be submitted through OkTAP
  2. File Form BT-129 Power of Attorney if someone will represent you
  3. Provide records in electronic format if possible; if you do not provide records, OTC may estimate your liability

Source: Business Tax Field Audit Guide for Taxpayers (opens in a new tab)

Collections

Enforcement on unpaid balances, such as liens, levies, warrants, or referral to a collection agency.

Collections

Tax Warrant

A legal document OTC files when state taxes stay unpaid after they become delinquent. It creates a public lien against your property, filed with the county clerk.

Why you got it

  • An assessment was still unpaid after 60 days
  • An audit posted automatically because no protest or extension was filed
  • For trust taxes like sales tax, warrants can also be issued against responsible officers, members or partners

What to do

  1. Email taxwarrants@tax.ok.gov for a payoff amount
  2. Pay in full to get a full release; partial releases of specific property can be requested
  3. Expect interest and penalties to keep accruing, so the current balance may exceed the warrant amount
  4. Once the tax is paid, you can still request a waiver of penalty and/or interest in OkTAP

Before you pay penalties: check whether you can ask for them to be waived, and what the state needs paid first. How to ask

Source: Tax Warrants and Partial Releases (opens in a new tab)

Ask for penalty relief

Penalties on a Oklahoma notice aren't always final. You can ask for them to be waived. Follow the steps below, including anything the state requires you to file or pay before it reviews the request.

Request a Waiver of Penalty and Interest

  1. File any missing returns and pay the tax. OTC accepts waiver requests once the tax is paid
  2. Submit the request online in OkTAP ("Request a Waiver of Penalty and Interest")
  3. Explain the facts that prevented you from filing or paying on time
  4. For an audit assessment, paying the tax and interest within the original 60-day billing notice waives the penalty automatically

What qualifies: The source asks for the facts surrounding the circumstances that prevented timely filing or payment; it does not list specific grounds

Interest: Upon payment of the tax, a taxpayer may request a waiver of the assessed penalty and/or interest

Source: Businesses - Oklahoma Tax Commission Help Center (opens in a new tab)

Before you respond

  • Check the date on the notice. Response windows usually run from that date, not the day you open it.
  • Match the account number and filing period to your own records before paying or disputing.
  • If returns are missing, filing the actual returns usually replaces an estimated bill. Confirm how on the notice or with the authority.
  • Ask about penalty relief before paying penalties, and check what must be paid with the request. See how
  • Keep a copy of the notice and everything you send back.

This page is general information, not tax or legal advice. Notice names and procedures change, so always follow the instructions on your notice and the official sources linked above.

Need the rates, nexus thresholds and filing rules? Read the Oklahoma sales tax guide.

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