Section 12B renewable investment, explained for 2026
The 100% year-one solar deduction, how limited partnerships deliver it, and what a sophisticated investor should interrogate before committing.
What Section 12B allows in 2026
Section 12B of the Income Tax Act gives South African taxpayers an accelerated deduction for investment in renewable-energy generation assets. For solar photovoltaic projects under 1MW, the deduction is 100% of the qualifying investment in year one; larger renewable assets deduct on a 50/30/20 schedule. The temporary enhanced allowance under Section 12BA — 125% — applied only to assets brought into use by 28 February 2025 and has lapsed; the standing 12B regime continues and remains one of the most efficient legal deductions available to South African taxpayers with energy exposure appetite.
How investors access 12B
Most private investors access Section 12B through en commandite (limited) partnerships: the partnership acquires qualifying solar assets with contracted offtake, and the deduction flows through to limited partners in proportion to their investment — typically allowing a taxpayer at the 45% marginal rate to shelter significant income while holding a yielding energy asset. The commercial substance matters: these are real generation assets with real counterparty and operational risk, not paper deductions.
What to interrogate before investing
- Asset quality and offtake — who buys the power, on what escalation, for how long, with what credit standing.
- Gearing and structure — how partnership-level debt affects both the deduction and the risk.
- Operator track record — generation assets are operating businesses; maintenance and performance guarantees decide returns.
- Exit mechanics — secondary liquidity in 12B partnerships is limited; understand the horizon.
Caban evaluates renewable-energy investments across our pipeline — energy has led African large-round activity through 2025–26, as our Capital Monitor documents — and structures investor participation in vetted opportunities. This page is general information, not tax advice: the application of Section 12B to your circumstances should be confirmed with your tax adviser.
Questions, answered
What is the Section 12B tax deduction?
Section 12B of the Income Tax Act allows an accelerated deduction for investment in renewable-energy generation: 100% in year one for solar PV under 1MW, and 50/30/20 over three years for larger renewable assets.
Is the 125% Section 12BA allowance still available in 2026?
No — the enhanced 125% deduction under Section 12BA applied only to assets brought into use by 28 February 2025 and has lapsed. The standard Section 12B regime continues.
How do private investors access Section 12B?
Most commonly through en commandite (limited) partnerships holding qualifying solar assets: the deduction flows through to limited partners in proportion to investment, combined with energy yield from contracted offtake.
What are the risks of 12B investments?
These are real operating assets: offtaker credit risk, generation performance, operator quality, gearing, and limited secondary liquidity. The deduction rewards the risk — it does not remove it.
Does Caban provide tax advice on Section 12B?
No — Caban structures and evaluates the investments themselves. The tax application to your personal circumstances should be confirmed with your own tax adviser.