California Manufacturing Sales Tax Exemptions & Refunds

Could Your Manufacturing Business Be Overpaying California Sales and Use Tax?

California manufacturers invest significant amounts of money in production machinery, processing equipment, technology, facility improvements, and other capital assets. What many businesses may not realize is that certain qualifying purchases and leases are eligible for a partial California sales and use tax exemption.

If your business has paid the full tax rate on qualifying manufacturing equipment, you may have an opportunity to recover overpaid tax.

Armenta-Roberts Consulting (ARC) helps California manufacturers evaluate equipment purchases, identify potential sales and use tax overpayments, review exemption eligibility, and pursue appropriate refund opportunities.

With more than 35 years of California sales and use tax experience, Joan Armenta-Roberts brings extensive institutional knowledge, professional tax consulting experience, and a longstanding commitment to taxpayer advocacy.

Contact ARC for a Manufacturing Sales Tax Review

What Is California's Manufacturing Sales Tax Exemption?

California Revenue and Taxation Code Section 6377.1 and Regulation 1525.4 establish a partial sales and use tax exemption for certain qualifying purchases and leases of tangible personal property used in manufacturing, research and development, and specified electric power activities.

For qualifying transactions occurring during the applicable period from January 1, 2017, through June 30, 2030, the partial exemption reduces the applicable tax by 3.9375 percentage points.

This does not eliminate the entire sales or use tax obligation. Remaining state, local, and district taxes generally still apply.

For example, if a qualifying purchase would otherwise be taxed at 7.25%, the partial exemption can reduce the applicable rate to 3.3125%.

Eligibility is determined by the purchaser, the property, its actual or intended qualifying use, and the applicable statutory and regulatory requirements.

Official CDTFA Regulation 1525.4

Which California Manufacturers May Qualify?

The partial exemption generally applies to qualified persons primarily engaged in certain qualifying business activities.

Depending on their operations and applicable business classifications, potential candidates may include:

• Industrial manufacturers

• Food and beverage processors

• Metal fabrication businesses

• Machinery and equipment manufacturers

• Electronics manufacturers

• Plastics and packaging manufacturers

• Certain research and development businesses

• Other qualifying production and processing operations

Not every business that manufactures or processes products automatically qualifies. CDTFA uses specific definitions and business classification requirements to determine eligibility.

ARC can examine your company's activities, organizational structure, and purchasing records to help determine whether the partial exemption may apply.

What Types of Manufacturing Equipment May Qualify?

California's partial exemption may apply to qualifying tangible personal property used primarily in eligible manufacturing or research and development activities.

Examples of property that may qualify, depending on the circumstances, include:

Production Machinery

Machinery used in qualifying manufacturing, processing, refining, fabricating, or recycling activities may qualify.

Examples could include production equipment, processing machinery, fabrication equipment, and other assets directly involved in eligible production activities.

Equipment Components and Replacement Parts

Certain machinery components, controls, replacement parts, and related equipment may qualify when they meet the applicable useful-life and use requirements.

Manufacturing Control Systems

Computers, software, and other systems used to operate, control, regulate, or maintain qualifying manufacturing machinery may be eligible.

General office computers and equipment used primarily for administrative or marketing purposes generally do not qualify under this provision.

Testing and Measurement Equipment

Equipment used primarily to maintain, repair, measure, or test qualifying manufacturing or research equipment may be eligible.

Certain Special-Purpose Buildings and Foundations

Specific buildings, foundations, and improvements that meet the regulatory definitions may qualify.

General-purpose buildings and facilities used solely for storing finished goods after manufacturing is complete are not automatically eligible.

Qualifying Equipment Leases

Certain leases of qualifying tangible personal property may also receive the partial exemption.

Lease eligibility depends on the applicable tax treatment, the property, the qualifying use, and the lease periods involved.

The determining factor is not simply what equipment your company owns, but whether the property and its use satisfy California's exemption requirements.

What Does “Primarily Used in Manufacturing” Mean?

Under CDTFA's manufacturing exemption guidance, qualifying property generally must be used at least 50% of the time in eligible activities.

The manufacturing process generally begins when raw materials are introduced into qualifying manufacturing, processing, refining, fabricating, or recycling activities and ends when the product reaches its completed form, including required packaging.

Equipment used primarily for unrelated administrative, marketing, distribution, or other nonqualifying activities generally does not qualify.

This is an important distinction because manufacturers often operate multiple departments, facilities, and production processes.

A careful review of how equipment is actually used may reveal opportunities that are not apparent from invoices or accounting classifications alone.

Can Manufacturers Recover Sales Tax Paid on Previous Equipment Purchases?

Potentially, yes.

A business may discover that it paid the full sales or use tax rate on purchases that qualified for a partial exemption.

When the legal requirements are satisfied and a timely refund claim can be made, some of that overpaid tax may be recoverable.

However, the refund process differs depending on whether the original transaction involved sales tax reimbursement or use tax.

Purchases Involving Sales Tax Reimbursement

Where the retailer reported and paid sales tax, the purchaser generally works through the retailer to seek reimbursement of the excess amount. The retailer may need to file the claim with CDTFA.

The purchaser may need to provide the appropriate partial exemption certificate and supporting documentation.

Purchases Involving Use Tax

For qualifying overpaid use tax, the purchaser may be able to file a refund claim directly with CDTFA.

Refund Filing Deadlines

California imposes statutory deadlines for refund claims. These depend on the circumstances and must be evaluated under Revenue and Taxation Code Section 6902 and other applicable provisions.

Do not assume that every historical purchase remains eligible for a refund.

A timely review can be important because otherwise valid claims may become barred by the statute of limitations.

CDTFA Publication 117 — Filing a Claim for Refund

What Is a Manufacturing Sales Tax Reverse Audit?

A reverse audit examines historical transactions to identify potential sales and use tax overpayments.

Rather than focusing exclusively on whether a company underpaid taxes, a reverse audit examines whether the business paid more tax than legally required.

For manufacturers, ARC may evaluate:

• Historical machinery and equipment purchases

• Equipment leases and related tax treatment

• Invoices and vendor tax charges

• Potentially qualifying research and development equipment

• Equipment used in production, testing, and maintenance

• Available partial exemption certificates

• Applicable refund periods and filing requirements

• Other potentially relevant sales and use tax exemptions

A reverse audit does not guarantee a refund. The purpose is to identify potential opportunities, verify eligibility, and determine whether an appropriate claim can be supported.

Learn more about California Sales Tax Refunds & Reverse Audits.

Why Work With Armenta-Roberts Consulting?

More Than 35 Years of California Sales and Use Tax Experience

Joan Armenta-Roberts has extensive experience in California sales and use tax matters, including previous service with the California State Board of Equalization and professional experience with major accounting firms.

Institutional Knowledge of California Tax Administration

Her background provides perspective on how California tax laws are interpreted, how agency procedures operate, and how complex tax issues can be presented and evaluated.

Established Professional Relationships

Through her consulting work with the California Taxpayers Association (CalTax), Joan has participated in discussions with senior CDTFA officials regarding taxpayer rights, regulatory issues, and tax administration.

These professional relationships reflect years of involvement in California tax matters and support her understanding of the administrative process.

Experienced Taxpayer Advocacy

Joan has publicly addressed CDTFA leadership concerning refund procedures, taxpayer rights, and regulatory interpretations.

For manufacturers navigating complex exemptions and refund issues, ARC offers technical analysis informed by extensive real-world experience.

Frequently Asked Questions About California Manufacturing Sales Tax Exemptions

Is manufacturing equipment exempt from sales tax in California?

Certain qualifying manufacturing equipment purchases and leases may receive a partial sales and use tax exemption. The exemption is not universal and does not eliminate all applicable taxes.

What is the California manufacturing equipment exemption rate?

For qualifying transactions in the applicable period beginning January 1, 2017, the partial exemption is 3.9375 percentage points of the applicable sales or use tax rate, subject to the statutory and regulatory requirements.

Can I get a refund if I already paid full sales tax on manufacturing equipment?

Possibly. Qualifying overpayments may be recoverable through the appropriate refund procedure if the claim is timely and adequately supported.

Do used manufacturing machines qualify?

Previously owned equipment is not automatically disqualified solely because it is used. The purchaser, property, qualifying use, and other applicable requirements must be evaluated.

Does the exemption apply to leased manufacturing equipment?

Certain qualifying leases may be eligible. The lease's tax treatment and the applicable lease periods must be examined.

Does the exemption apply to manufacturing software?

Certain software and computer equipment used to operate, control, or maintain qualifying manufacturing machinery may be eligible. General business software is not automatically exempt.

Are manufacturing supplies exempt from sales tax?

Not necessarily. Consumables and supplies may be subject to different rules. The partial exemption generally excludes consumables with a useful life of less than one year, subject to specific statutory provisions.

Does packaging equipment qualify for the manufacturing exemption?

Packaging equipment may qualify when it satisfies the applicable requirements and is used in a qualifying manufacturing process, including required packaging. The treatment of packaging materials themselves requires separate analysis.

Do food processors qualify for California manufacturing exemptions?

Some food processors may qualify, depending on their business activities, equipment, and use of the property. Qualification must be established under the applicable rules.

How far back can a California manufacturer claim a sales tax refund?

Refund limitation periods depend on the applicable statutes and transaction history. A common three-year rule does not cover every circumstance, and deadlines should be verified before filing.

Do I need an exemption certificate?

An appropriate partial exemption certificate is generally required when claiming the exemption through a retailer. The certificate must meet CDTFA's requirements.

Can ARC help if CDTFA is auditing my manufacturing business?

ARC also provides California sales and use tax audit defense and assistance with disputed audit findings.

Learn more about California Sales Tax Audit Defense.

Find Out Whether Your Manufacturing Business Has Overpaid Sales or Use Tax

Your business may have invested substantial amounts in production machinery, processing equipment, technology, and facility improvements.

If qualifying purchases were taxed incorrectly, there may be opportunities to recover overpayments.

Armenta-Roberts Consulting can help you evaluate potential exemptions, review supporting documentation, and determine appropriate next steps.

Schedule a Manufacturing Sales Tax Review With ARC

Contact Armenta-Roberts Consulting to discuss your equipment purchases, California sales and use tax treatment, and potential refund opportunities.

Official California Tax Authorities and Resources

1. California Revenue and Taxation Code § 6377.1 and Regulation 1525.4

2. CDTFA Manufacturing and Research & Development Equipment Tax Guide

3. CDTFA Manufacturing Exemption Qualifications

4. CDTFA Guidance for Purchasers

5. CDTFA Publication 117 — Filing a Claim for Refund

This material provides general information and should not be relied upon as a determination of eligibility or a substitute for transaction-specific professional advice. Technical content requires ARC approval before publication.