EDD Instructions for Completing Tax and Wage Adjustment Form
The Tax and Wage Adjustment Form, DE 678, allows employers to amend their tax and wage reporting to the California EDD. This form is essential for adjustments related to taxes, wages, or reporting errors. It's particularly important for employers who need to correct prior submissions for compliance.
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How do I fill this out?
To fill out the DE 678 form, start by gathering all relevant tax information. Ensure you have the correct details for the wages and taxes being adjusted. Carefully complete each section to avoid delays in processing your request.

How to fill out the EDD Instructions for Completing Tax and Wage Adjustment Form?
1
Gather all relevant tax information.
2
Check the specific adjustments needed.
3
Complete Section I with business details.
4
Fill in the necessary adjustments in subsequent sections.
5
Ensure accuracy before submitting the form.
Who needs the EDD Instructions for Completing Tax and Wage Adjustment Form?
1
Employers who have underpaid taxes and need to adjust their records.
2
Businesses that have overpaid taxes and wish to request a refund.
3
Employers who need to correct Social Security numbers or employee names.
4
Entities reporting wages for household workers needing adjustments.
5
Businesses wanting to ensure compliance with California tax laws.
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What are the instructions for submitting this form?
To submit the DE 678 form, you can fax it to the EDD at 1-866-303-0706 or mail it to the Employment Development Department, P.O. Box 997350, Sacramento, CA 95899-7350. Ensure that you double-check for accuracy before submission. For any inquiries, you can reach the Taxpayer Assistance Center at 888-745-3886.
What are the important dates for this form in 2024 and 2025?
There are no specific due dates for the DE 678 form itself, but it’s crucial to submit adjustments timely for compliance with quarterly or annual tax reporting deadlines set by the EDD. For tax year filing deadlines, consult the EDD's calendar for 2024 and 2025 to ensure all necessary submissions align with state mandates.

What is the purpose of this form?
The DE 678 form is primarily designed for employers to amend their tax and wage records with the California Employment Development Department (EDD). This is essential for correcting errors in previously filed forms such as the DE 7, DE 6, or DE 3HW. Filing this form helps ensure compliance with California tax laws and proper documentation of payroll taxes.

Tell me about this form and its components and fields line-by-line.

- 1. Section I: Includes business name, address, and tax year.
- 2. Section II: Details about prior taxes paid and dates.
- 3. Section III: Adjustments to reported wages and taxes.
- 4. Section IV: Information necessary for SDI or PIT credits.
- 5. Section V: Additional adjustments for previously reported employees.
What happens if I fail to submit this form?
Failing to submit the DE 678 can lead to penalties or lack of compliance with tax obligations. Employers may face additional scrutiny or audits from the EDD if records are not corrected in a timely manner.
- Legal Penalties: Not submitting the DE 678 may result in fines or legal repercussions.
- Inaccurate Tax Records: Failing to amend incorrect records can lead to complications in tax filings.
- Potential Audits: Inadequate submissions may increase the likelihood of an audit by the EDD.
How do I know when to use this form?

- 1. Adjust Reporting Errors: To correct mistakes made in prior tax filings.
- 2. Request Refunds: For overpaid taxes that need to be refunded.
- 3. Update Employee Info: To correct SSNs or names of employees previously submitted.
Frequently Asked Questions
What is the purpose of the DE 678 form?
The DE 678 form is used to adjust prior tax and wage submissions to the EDD.
How do I find the form?
You can access the DE 678 form on the PrintFriendly platform.
Can I edit my DE 678 form?
Yes, you can easily edit the form using our editing tools.
How do I sign the form?
After editing, you can add your signature directly on the PDF.
What if I need to adjust employee details?
You can make corrections to employee information directly on the form.
Is there help available for filling out the form?
Yes, we provide guidance and resources for completing the DE 678.
Can I share the form with others?
Absolutely, you can share the edited PDF easily with our share feature.
What if I overpaid taxes?
You can request a refund by properly filling out section IV.
When should I use the DE 678?
Use the DE 678 when making adjustments to previously filed tax submissions.
Is the DE 678 available in different formats?
Yes, it can be edited and downloaded in various formats using PrintFriendly.
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