Solar Section 12B Tax Benefit Explained for SA Businesses & Homeowners

What Is the Section 12B Tax Benefit for Solar in South Africa?

Load-shedding has driven thousands of South African businesses and homeowners to invest in solar power. But the financial benefits go beyond energy savings – the Section 12B tax benefit allows businesses to deduct the full cost of qualifying solar photovoltaic (PV) assets from their taxable income in the first year. This incentive, governed by the South African Revenue Service (SARS), can reduce the effective cost of a solar system by up to 28% (depending on the company’s tax rate).

In this article we explain exactly how Section 12B works, who qualifies, what documentation you need, and how a verified solar installer on Lead Services can help you implement a compliant system that meets SARS requirements.

How Section 12B Works for Solar PV Systems

Section 12B of the Income Tax Act allows a 100% deduction of the cost of new and unused renewable energy assets – including solar PV panels and inverters – in the year they are first brought into use. The asset must have a capacity of not more than 1 megawatt (MW) and must be used for the purpose of trade (i.e. in a business).

Key Requirements for Claiming Section 12B

• The solar system must be new and unused – second-hand equipment does not qualify.
• It must be operational and connected to the business’s electricity supply.
• The business must hold a valid tax invoice from the installer and supplier.
• The system must comply with South African National Standards (SANS 10142-1) and the relevant municipal by-laws.
• A Certificate of Compliance (CoC) from a registered electrical contractor is required.

Who Qualifies for Section 12B?

According to Thandi Mokoena, a tax consultant with over a decade of experience in renewable energy incentives based in Johannesburg: “Section 12B is specifically for businesses – sole proprietors, partnerships, companies, and trusts that carry on a trade. If you run a small manufacturing operation in Midrand, a restaurant in Cape Town, or a retail store in Durban, the solar system you install for your business qualifies for the 100% deduction.”

Individuals who work from home and claim home-office expenses may also qualify if the solar system is used primarily for their trade. Industry best practice suggests keeping a log of business electricity usage and a separate metering arrangement to strengthen your claim.

What About Individual Homeowners? The Solar Tax Rebate

For the 2023/24 and 2024/25 tax years, SARS introduced a separate solar tax rebate for individuals (not Section 12B) that allows a 25% deduction of the cost of new solar PV panels, capped at R15,000. Batteries and inverters are excluded from this rebate – only the panels qualify. This rebate is claimed through your annual tax return.

Michael du Plessis, a veteran solar installer in Pretoria East, explains: “Many homeowners ask us about Section 12B, but that’s for businesses. Individuals should look at the Section 6A rebate or the Section 12BA incentive that was introduced in the 2023 Budget. Our job is to recommend the right-sized system and provide the correct documentation – a valid tax invoice and a CoC – so our clients can claim whatever tax benefit applies to them.”

Statistics: How Much Can You Save?

Industry surveys suggest that a typical 5kW solar PV system in South Africa costs between R85,000 and R120,000, including installation. For a business paying 28% corporate income tax, a Section 12B deduction on a R100,000 system reduces the tax liability by R28,000. “That’s like getting a 28% discount on your solar installation,” says Ms. Mokoena. “Over the system’s 25-year lifespan, the combination of energy savings and tax benefits can reduce net costs by over 60%.”

Research indicates that approximately 65% of small businesses in Gauteng are actively evaluating solar as a response to load-shedding, yet many are unaware of the Section 12B benefit. Furthermore, industry data suggests that properly maintained solar systems can reduce a business’s electricity bill by up to 70%, with an average payback period of 4 to 6 years after factoring in the tax deduction.

Installation Compliance and the Role of Certified Installers

To qualify for Section 12B, the solar installation must meet all relevant safety and grid standards. The National Building Regulations and the South African National Standard (SANS 10142-1) govern electrical installations, including solar PV. In addition, grid-tied inverters must comply with NRS 097-2-1, and batteries must be installed according to SANS 10142-1-2.

Municipalities such as the City of Johannesburg, City of Cape Town, and eThekwini (Durban) require planning approval for solar installations. A reputable installer will handle the paperwork and issue a Certificate of Compliance (CoC) upon completion.

To find a verified solar installer on Lead Services, you can filter by certification – look for installers registered with the South African Photovoltaic Industry Association (SAPVIA), the South African Electrical Contractors Association (SAECA), or those who hold a PV GreenCard. These designations ensure the installer is trained and compliant with local regulations.

How to Claim Section 12B on Your Tax Return

When completing your annual tax return (ITR14 for companies, IT12 for individuals with trade income), you will need to include the cost of the solar asset in the capital allowance section. SARS may request supporting documents, including:

• Tax invoice from the solar supplier and installer
• Proof of payment
• Certificate of Compliance (CoC) from a registered electrician
• Proof of municipal approval (if required)
• Details of the asset (make, model, capacity, date brought into use)

It is advisable to keep these records for at least five years. If you are using a tax practitioner, make sure they are familiar with Section 12B.

Frequently Asked Questions

What is the Section 12B tax benefit for solar?

Section 12B allows businesses to claim a 100% deduction of the cost of new solar PV assets (panels and inverters) in the year they are first used. The system must have a capacity of 1MW or less and be used primarily for trade.

How does the solar tax rebate work for individuals in South Africa?

For individuals, the solar rebate is a 25% deduction on the cost of new solar panels (not batteries or inverters) capped at R15,000 per person. It is available for the 2023/24 and 2024/25 tax years and is claimed via your annual tax return.

Can I claim Section 12B if I work from home?

Yes, but only if you are running a business from home (e.g., a registered sole proprietorship). You must be able to demonstrate that the solar system is used for your trade. It’s best to have separate metering or a clear apportionment of usage.

Do I need a tax invoice from the installer to claim the benefit?

Yes, SARS requires a valid tax invoice from both the equipment supplier and the installer. The invoice must show your business’s details, VAT registration number (if applicable), and a clear breakdown of costs.

How do I find a certified solar installer near me in South Africa?

Use Lead Services to search for verified solar installers in your city. You can filter by certification (SAPVIA, PV GreenCard, SAECA) and read reviews from other business owners and homeowners. Many installers also assist with the documentation needed for your Section 12B claim.

Conclusion

The Section 12B tax benefit makes solar power an even more attractive investment for South African businesses. By understanding the rules, working with a compliant installer, and keeping proper records, you can significantly reduce the upfront cost of your solar system while hedging against rising electricity tariffs and load-shedding. For homeowners, the individual solar rebate offers a separate but valuable incentive.

Don’t leave money on the table – browse our directory of verified solar installers today to get competitive quotes and start your journey toward energy independence.

Authors Note / Disclaimer

The information contained in this article is for general informational purposes only and does not constitute tax or legal advice. Tax laws are subject to change, and individual circumstances may vary. Please consult a qualified tax professional or SARS directly for advice specific to your situation. Always verify quotes, certifications, and documentation requirements with service providers listed on Lead Services.