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Are Capital Improvements Exempt from Sales Tax in NJ?

April 14, 2025Taxes45 min read

In New Jersey, capital improvements to real property are generally exempt from sales tax. However, for the exemption to apply, the work must be permanent, add value to the property, and meet certain requirements set by the state. Additionally, homeowners must provide the correct exemption certificate to their contractor to avoid being charged sales tax.

In New Jersey, capital improvements to real property are generally exempt from sales tax. However, for the exemption to apply, the work must be permanent, add value to the property, and meet certain requirements set by the state. Additionally, homeowners must provide the correct exemption certificate to their contractor to avoid being charged sales tax.

What Qualifies as a Capital Improvement?

A capital improvement is any work that enhances the value or extends the useful life of a property. The improvement must be permanent, meaning it cannot be easily removed without causing damage. Common examples of capital improvements in New Jersey include:

  • Installing a new roof

  • Building an addition or deck

  • Upgrading plumbing or electrical systems

  • Installing new flooring (permanent, not removable carpet)

  • Constructing a driveway or patio

The Importance of Form ST-8

To claim the sales tax exemption, the homeowner must complete and submit Form ST-8, the Certificate of Exempt Capital Improvement, to the contractor before work begins. This document certifies that the work qualifies as a capital improvement under New Jersey tax laws. Without this form, the contractor is required to collect sales tax on labor costs.

What Work Is Not Exempt?

While capital improvements are tax-exempt, certain types of work are still subject to sales tax, including:

  • Repairs and maintenance (e.g., fixing a leaky pipe, repainting a room)

  • Cleaning services

  • Temporary or removable installations (e.g., carpet that is not glued down)

If a project includes both taxable repairs and exempt improvements, the contractor must itemize the costs separately. Only the capital improvement portion will be exempt from sales tax.

Final Thoughts

Capital improvements in New Jersey can qualify for a sales tax exemption, but homeowners must ensure their project meets the criteria and submit Form ST-8 to their contractor. Understanding these rules can help homeowners save money and ensure compliance with tax regulations.

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