Form 126 – Registration or Exemption Change Request

Jurisdiction: Country: United States | Province or State: Missouri

If you are updating a tax registration or exemption with the Missouri Department of Revenue, you may need to complete Form 126 – Registration or Exemption Change Request. This form is used to report changes to an existing account or to adjust an exemption status on file.

You are not starting from scratch with this document. Instead, you are modifying information that already exists in the state’s records. That could mean updating business details, correcting account information, or changing how your account is classified.

This form matters because state agencies rely on accurate registration data. When your information is outdated or incorrect, it can affect tax filings, notices, and compliance status. Even small errors can create delays or confusion.

If you are about to fill this out, your goal is clarity. You want to understand what information the state is asking for, why it matters, and how to complete the document correctly the first time.

What is Form 126 – Registration or Exemption Change Request?

Clear definition

Form 126 – Registration or Exemption Change Request is an official document used to notify the Missouri Department of Revenue about changes to an existing tax registration or exemption. It allows you to update information that was previously submitted and approved.

This form is not a new registration application. It is a change request. You are telling the state that something about your registration or exemption status has changed since your last filing.

The document typically includes identifying details, such as account numbers and business information, along with specific sections where you describe the changes you are reporting.

Who typically uses this form?

Business owners often use this form when they need to update their tax account details. That includes sole proprietors, partnerships, corporations, and limited liability companies.

Nonprofit organizations may also use it if their exemption status or organizational information changes. In some cases, individuals with specific tax accounts may need to submit it to correct or update records.

Account managers, bookkeepers, or officers of a business commonly complete the form. The person filling it out usually has the authority to report changes on behalf of the registered entity.

Why might you need this form?

You might need this form when your business information changes. For example, a change in address, ownership, or legal structure may require an update.

You may also need it if your tax responsibilities shift. A business that begins selling taxable goods might need to update its registration. On the other hand, an entity that qualifies for an exemption may need to formally request recognition of that status.

Sometimes the need is simpler. An incorrect name spelling, outdated contact information, or a closed location can require a formal change request so the state’s records remain accurate.

Typical real-life scenarios

• You move your business to a new address. Your tax account is still tied to the old location. You use the form to update the physical or mailing address on file.
• Your business changes its legal name after filing formation documents with the state. Even though the business itself continues operating, the name on the tax account must match the new legal name.
• You restructure your company from a sole proprietorship to a limited liability company. That shift may affect how the account is classified. A change request ensures the registration reflects the new structure.
• Your organization qualifies for a tax exemption due to its nonprofit status. After receiving federal recognition, you may need to update your state registration to reflect the exemption.
• You close one branch location but keep others open. The state may still show all locations as active. Filing a change request helps clarify which locations remain operational.

When would you use Form 126 – Registration or Exemption Change Request?

You use this form when information previously provided to the Missouri Department of Revenue is no longer accurate. The key factor is that a registration already exists. You are not applying for the first time.

Business owners often use it after operational changes. That includes opening or closing locations, changing officers or responsible parties, or updating mailing addresses.

Tax professionals may prepare the form when reviewing a client’s account and discovering discrepancies between state records and current business details.

Nonprofit administrators may use it when their exemption status changes or when the organization’s structure shifts in a way that affects how it is recognized for tax purposes.

You might also use the form if you receive correspondence from the state that reflects outdated or incorrect information. Instead of ignoring the issue, you formally request a correction.

In general, this form is used at the moment a change becomes official. For example, after a legal name change is filed or after a business relocates. It documents the update so the tax account stays aligned with reality.

Legal characteristics of Form 126 – Registration or Exemption Change Request

This form functions as an official notice to a state agency. Its effectiveness depends on accurate, complete information and proper submission according to the agency’s procedures.

The document typically requires identifying details such as tax identification numbers or account numbers. If those are incorrect or missing, the request may not be processed as expected.

Signatures are important. The person signing usually affirms that the information provided is true and correct. Submitting false or incomplete information can create administrative issues or potential penalties.

Common problems include leaving required sections blank, failing to clearly describe the change, or not matching the new information with existing records. Inconsistent details can cause delays.

State agencies may have specific formatting or submission rules. Some changes may require supporting documentation, such as proof of a name change or updated organizational documents. If required documents are missing, processing may be delayed.

This form does not replace other required filings. For example, changing your business structure may also require filings with other state offices. Form 126 – Registration or Exemption Change Request only updates the registration or exemption information held by the Department of Revenue.

Is it legally binding?

The form itself is not a contract between private parties. It is a formal administrative filing with a government agency.

When you sign it, you are certifying that the information you provide is accurate to the best of your knowledge. That certification has legal significance. False statements can carry consequences.

Once accepted, the updated information becomes part of your official tax account record. The state may rely on that information for notices, assessments, and compliance tracking.

However, the form does not create new legal rights beyond updating the registration or exemption status. It records changes. It does not grant benefits automatically unless the agency approves the requested change.

How to fill out Form 126 – Registration or Exemption Change Request

Step 1 – Review your current registration details

Before writing anything, gather your existing registration information. Locate your account number, legal business name, and any previous correspondence from the Missouri Department of Revenue.

Compare your current business details with what is on file. Identify exactly what has changed. This prevents unnecessary edits and helps you complete only the relevant sections.

Step 2 – Enter identifying information

Begin the form by filling in the required identifying fields. This usually includes your legal name, trade name if applicable, account number, and contact information.

Make sure the name matches your official registration documents. Small differences in spelling or punctuation can cause confusion in processing.

Provide current contact details so the agency can reach you if clarification is needed.

Step 3 – Indicate the type of change

Locate the section that asks you to specify the change you are requesting. This may include checkboxes or designated areas for different types of updates.

Select or describe only the changes that apply to you. If you are updating multiple items, ensure each one is clearly marked.

Be precise. For example, if you are changing a mailing address, confirm that you are not unintentionally changing the physical location unless that also applies.

Step 4 – Provide updated information

In the space provided, enter the new or corrected information. Write clearly and completely.

If the change involves dates, such as the effective date of a name change or closure, provide the exact date. This helps the agency align your records with your tax reporting history.

If supporting documentation is required, ensure the information on the form matches those documents exactly.

Step 5 – Review for completeness and accuracy

Before signing, read through the entire form. Confirm that all required sections are filled in and that the information is consistent.

Check numbers carefully. Account numbers, identification numbers, and dates are common sources of mistakes.

Make sure you have not left any required signature or date fields blank.

Step 6 – Sign and date the form

The authorized individual should sign the form in the designated area. This is often the business owner, officer, or another person with authority over the account.

Print the signer’s name and title if requested. Add the date of signing.

By signing, you confirm that the information provided in Form 126 – Registration or Exemption Change Request is accurate and complete.

Step 7 – Submit according to instructions

Follow the submission instructions listed on the form. This may include mailing or otherwise delivering the completed document to the appropriate department.

Ensure any required attachments are included at the time of submission. Keep a copy of the completed form and supporting materials for your records.

After submission, monitor your account or correspondence for confirmation or follow-up requests from the agency.

Legal terms you might encounter in Form 126 – Registration or Exemption Change Request

1. Registration Number: This is the number assigned to your business tax account. You will enter it so the agency can locate your existing record. If you enter the wrong number, your request may be applied to the wrong account or delayed.
2. Tax Type: This refers to the specific kind of tax account you are changing, such as sales tax, withholding tax, or another state-administered tax. The form may require you to mark or list the tax type affected by your change. Be precise so the update is applied only where intended.
3. Exemption Status: This describes whether your business is claiming an exemption from a specific tax or registration requirement. On this form, you may be requesting to begin, end, or modify that exemption. You must clearly state the basis for the exemption and the effective date.
4. Effective Date: This is the date when the change should take effect. You will usually enter a specific month, day, and year. Choosing the correct effective date affects reporting periods and potential tax liability.
5. Business Entity: This identifies the legal structure of your organization, such as sole proprietorship, partnership, corporation, or limited liability company. If your entity type has changed, you may need to update it. The entity type affects how your account is administered.
6. Responsible Party: This is the individual authorized to act on behalf of the business. The form may require the name, title, and contact information of this person. This ensures the agency knows who can answer questions about the change.
7. Principal Place of Business: This is the main physical location where your business operates. If your address has changed, you must update it accurately. The agency uses this address for official correspondence.
8. Supporting Documentation: These are documents you may need to attach to justify your requested change. Examples include organizational documents, exemption letters, or proof of address. Missing attachments can delay processing.
9. Authorized Signature: This is the signature of the person legally permitted to sign on behalf of the business. By signing, you confirm that the information provided is true and complete. An unauthorized signature can cause rejection of the form.

FAQs

What information do I need in front of me before I start filling out this form?

You should have your registration number, legal business name, and current account details exactly as they appear in state records. Gather any documents that support the change, such as updated organizational paperwork or proof of a new address. You also need to know the correct effective date for the change and the name and title of the person who will sign.

How do I choose the correct effective date for my change?

Use the date when the change actually happened or will happen. For example, if you moved locations on March 15, enter that date. Do not guess or leave it blank, because the effective date determines when your reporting obligations shift. Double-check that the date matches your internal records.

What if my business name on this document does not exactly match prior filings?

You must enter the legal name exactly as it appears on your existing registration. Even small differences, like missing punctuation or abbreviations, can cause delays. If you are also changing the name, clearly indicate that and provide any required supporting documents showing the official name change.

Do I need to attach documents when submitting Form 126 – Registration or Exemption Change Request?

If your requested change requires proof, you should attach copies of those documents. For example, an exemption update may require documentation supporting your eligibility. Review the instructions carefully and confirm you have included every required attachment before submitting Form 126 – Registration or Exemption Change Request.

Who is allowed to sign this form?

The signer must be an owner, officer, partner, or another person with authority to bind the business. The title you list should reflect that authority. If the wrong person signs, the request may be rejected or returned for correction.

How will I know if my change has been accepted?

After submission, you should receive written confirmation or see the update reflected in your account records. Keep a copy of your submitted Form 126 – Registration or Exemption Change Request so you can compare it with the updated information. If you do not receive confirmation within a reasonable time, follow up using your registration number.

What happens if I make a mistake after I submit this document?

If you notice an error, act quickly. You may need to submit a corrected form or provide clarification in writing. Be prepared to reference the date you submitted the original request and explain exactly what needs to be corrected.

Will my changes automatically update all my tax accounts?

Not always. This form typically applies only to the specific tax types you indicate. If you have multiple accounts, review each one and confirm whether a separate request is required for other registrations.

Checklist: Before, During, and After Form 126 – Registration or Exemption Change Request

Before

• Locate your current registration number and confirm it matches official records.
• Verify your legal business name and entity type.
• Identify exactly what change you are requesting.
• Determine the correct effective date for the change.
• Gather all required supporting documentation.
• Confirm who has the authority to sign.
• Review prior filings to ensure consistency.
• Set aside time to complete the form without interruption.

During

• Print or type clearly and legibly.
• Enter your registration number accurately.
• Check the correct box or section for the type of change.
• Provide complete updated information, not partial details.
• Double-check dates for accuracy.
• Attach copies of all required documents.
• Review every page for blanks or unanswered questions.
• Sign and date the form in the designated area.

After

• Make a complete copy of the signed form and attachments.
• Submit the form using the approved method.
• Record the date of submission.
• Monitor for confirmation or acknowledgment.
• Verify that the changes appear correctly in your account.
• Update your internal records to match the approved change.
• Inform relevant staff or advisors about the update.
• Store the confirmation with your tax records.

Common mistakes to avoid with Form 126 – Registration or Exemption Change Request

• Mistake: Entering the wrong registration number because you rely on memory instead of checking records, which can result in the change being applied to the wrong account, so do not forget to verify the number directly from official documents.
• Mistake: Leaving the effective date blank because you are unsure of the exact day, which can delay processing or cause reporting confusion, so do not forget to confirm the date from your business records.
• Mistake: Using a trade name instead of the legal business name because that is what you commonly use, which can trigger mismatches in the system, so do not forget to match the exact legal name on file.
• Mistake: Failing to attach supporting documentation because you assume it is already on file, which can cause rejection or requests for additional information, so do not forget to include copies with your submission.
• Mistake: Having an unauthorized employee sign the form because the owner is unavailable, which can invalidate the request, so do not forget to confirm signer authority before submitting.
• Mistake: Requesting changes for multiple tax types but only marking one section due to oversight, which leaves some accounts unchanged, so do not forget to review each tax type carefully before finalizing.

What to do after filling out Form 126 – Registration or Exemption Change Request

Once you complete the form, pause before sending it. A careful final review can prevent weeks of delay.

• Step 1: Read through the entire form from top to bottom and confirm that every required field is filled in.
• Step 2: Compare the registration number and legal name against a prior official notice to ensure they match exactly.
• Step 3: Confirm that the effective date reflects the actual date of change.
• Step 4: Check that all required attachments are included and clearly labeled.
• Step 5: Make a complete copy of the signed form and all attachments for your records.
• Step 6: Submit the form using the permitted filing method and note the submission date.
• Step 7: Track any confirmation number or acknowledgment you receive.
• Step 8: Monitor your account statements or correspondence to verify that the change has been processed correctly.
• Step 9: Update your internal accounting system, licenses, and related documents to reflect the approved change.
• Step 10: Keep the confirmation and a copy of the form with your permanent tax records in case questions arise later.

Stay organized. Keep everything in one file, whether physical or digital. If you ever need to prove when or how you requested the change, your copy and confirmation will protect you. Clear records reduce stress and help you respond quickly if the agency contacts you for clarification.