Green Investment Incentives are no longer just buzzwords. For UK businesses, it is now a route to lower costs, better resilience, and long-term growth. Government support continues to evolve, and a wide range of green investment incentives are available in 2025 and 2026 to make upgrades and efficiency projects financially worthwhile.
Whether you are planning to electrify your fleet, install renewable energy systems, or improve building efficiency, the numbers now stack up. With clear tax reliefs, extended grants, and new business rates exemptions, this is a strong moment to revisit your sustainability plans.
Here’s what business owners need to know.
Capital Allowances and Full Expensing
The headline support for green investment incentives continues to be through the capital allowances system.
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Annual Investment Allowance (AIA): Businesses can deduct 100% of the cost of qualifying plant and machinery up to £1 million per year. This includes most equipment and installations except cars.
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Full Expensing: Companies can claim a 100% first-year deduction on new main-rate plant and machinery, and a 50% allowance on special-rate assets. The policy is now permanent.
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Structures and Buildings Allowance (SBA): Applies to commercial construction and renovation, with a 3% annual deduction, or a 10% rate in designated Investment Zones.
Together, these allowances mean that many efficiency upgrades now have a much faster payback period.
More detail can be found at HMRC’s capital allowances guidance.
Fleet Electrification and Vehicle Green Investment Incentives
Businesses upgrading to low or zero-emission vehicles can benefit from targeted green investment incentives for fleets and charging infrastructure.
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First-Year Allowance (FYA): A 100% deduction for zero-emission cars and electric vehicle charge points until 31 March 2026 (corporation tax) or 5 April 2026 (income tax).
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Workplace Charging Scheme (WCS): Covers up to 75% of charge point installation costs, capped at £350 per socket, up to 40 sockets per business.
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Benefit in Kind (BiK): Remains at only 3% for zero-emission company cars in 2025/26, rising gradually in future years.
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Vehicle Excise Duty (VED): From April 2025, all electric vehicles will pay standard VED, but the low BiK rate keeps them cost-effective.
Timing is crucial, as some reliefs and grants are due to end in 2026.
Further details are available at Office for Zero Emission Vehicles – Workplace Charging Scheme.
VAT and Energy-Saving Materials
Until 31 March 2027, a 0% VAT rate applies to energy-saving installations in residential and charitable buildings. This covers solar panels, heat pumps, insulation, and some related battery and groundworks.
Although commercial premises generally remain subject to the standard 20% VAT, input VAT can often be reclaimed on energy-saving works that support taxable business activity.
Business Rates Relief for Renewable Installations
The government continues to reward green investment incentives in on-site generation and storage through business rates relief.
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Renewables and Storage: Exemption for eligible plant used in on-site renewable generation or storage, available until March 2035.
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Heat Networks: 100% relief for low-carbon heat networks until 2035.
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Improvement Relief: From April 2024, businesses can get 12 months’ relief from higher rates after completing qualifying improvements.
For many businesses, rooftop solar and battery storage are now financially attractive not only because of energy savings but also because of these extended reliefs.
R&D and Patent Box for Low-Carbon Innovation
Innovation remains central to the UK’s approach to green investment incentives. The merged R&D scheme now offers a 20% taxable credit for qualifying expenditure, with an enhanced deduction under the ERIS regime for R&D-intensive SMEs.
Businesses developing low-carbon materials, control systems, or clean technologies can also combine R&D claims with the Patent Box, which provides a 10% effective corporation tax rate on qualifying IP income.
See HMRC Patent Box guidance for more information.
Other Grants and Support
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Boiler Upgrade Scheme (BUS): Grants up to £7,500 for heat pumps and eligible biomass boilers in homes and small commercial buildings.
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Industrial Energy Transformation Fund (IETF): Now closed, but replacement funding streams may appear in 2026.
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Improvement Relief Certification: Required to access temporary business rates reductions following green upgrades.
Final Thoughts
The UK’s drive toward sustainability has matured into a network of strong financial levers. The current range of green investment incentives is broad and long-term, allowing business owners to plan with confidence.
With energy efficiency, electric vehicles, R&D, and renewable installations all supported, 2025 and 2026 offer some of the best opportunities yet to align financial and environmental goals.
FAQs: Green Investment Incentives
Can second-hand assets qualify for these green investment incentives
Yes, but not for full expensing. They qualify under the Annual Investment Allowance or standard writing-down allowances.
What is the deadline for 100% EV allowances
31 March 2026 for companies, 5 April 2026 for unincorporated businesses.
Can I combine R&D relief and the Patent Box
Yes, but on different expenditure. They are complementary but cannot apply to the same costs.
Does the VAT zero rate apply to commercial buildings
No, it applies only to residential and charitable properties, though input VAT may still be reclaimable.
Is there still funding under the IETF scheme
No, the fund closed in July 2025. Keep an eye out for replacement schemes in 2026.
Get in touch with us now to discuss your needs on
01244 917000 (Chester)
01829 332010 (Tattenhall)
0151 380 0104 (Liverpool).
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