0% VAT on Solar Panels Ends March 2027: What It's Actually Worth
Last updated: 25 August 2026 | 9 min read | By No1 Solar Care
Tax position correct as of 25 August 2026. VAT rules can change at any fiscal event.
You will read a lot over the next eighteen months about the VAT deadline on solar. Most of it will tell you that you are about to lose 20% and should book an installation immediately.
That is not right, and we would rather say so than sell on a number that does not hold up. The 0% rate on energy-saving materials is scheduled to end on 31 March 2027, and when it does, VAT on solar installations is expected to return to the reduced rate of 5% — not the standard 20%. On a £6,500 system the difference is around £325.
£325 is real money and worth having. It is not the emergency some of the marketing will suggest, and it should not be the reason you make a five-figure decision in a hurry.
In summary: 0% VAT on solar panels and battery storage ends on 31 March 2027. After that, the rate is expected to revert to 5%, not 20% — a difference of roughly £325 on a typical £6,500 domestic installation.
What Is the 0% VAT Rate on Solar Panels?
Since 1 April 2022, installing qualifying energy-saving materials in residential property in Great Britain has carried 0% VAT. That covers solar panels, battery storage, heat pumps and insulation, and it applies to the whole installed cost — equipment and labour together, not just the hardware.
Before April 2022 these installations were charged at the reduced rate of 5%. The 0% band was introduced as a temporary five-year relief and given an explicit end date of 31 March 2027.
The relief applies to installation in residential accommodation. It is not a grant, and there is nothing to claim — a qualifying installer simply doesn't add VAT to the invoice. If you are being asked to apply for something, ask questions.
What Happens on 1 April 2027?
The expectation is a return to the 5% reduced rate that applied before April 2022, not the standard 20%. Energy-saving materials have carried a reduced rating in UK VAT law for over two decades, and nothing announced so far removes that.
There is genuine uncertainty here and it is worth being straight about it. Government has signalled an intention to keep the relief in place beyond March 2027, but as things stand that intention has not been enacted in legislation. Three things could happen:
The relief is extended or made permanent, and nothing changes. This is what the industry expects and what has been signalled, but signalled is not the same as legislated.
The relief lapses as scheduled and the rate returns to 5%. This is the default legal position if nothing is done.
Something else entirely at a future Budget. Fiscal events move quickly and VAT reliefs are an easy lever.
The honest position for a homeowner is that the downside risk of missing the deadline is about 5%, and there is a reasonable chance the deadline moves anyway.
What the Deadline Is Actually Worth
System · Typical cost · VAT at 0% · VAT at 5% · Difference
Figures are illustrative and assume a reversion to 5%. If the rate were to return to 20% instead — which we do not expect and which nothing currently indicates — the numbers would be four times higher.
The key takeaway: on a typical domestic system the deadline is worth a few hundred pounds. That is worth planning around. It is not worth choosing a worse installer, a worse system, or skipping a proper survey to hit it.
Does the Deadline Mean You Should Rush?
No, and this is where a lot of the current marketing gets uncomfortable.
To benefit, the installation needs to be completed and invoiced before 31 March 2027. That is over eighteen months away at the time of writing. A domestic solar installation, from first survey to commissioning, typically takes four to ten weeks including the DNO notification. There is no timing pressure yet, and there will not be until roughly autumn 2026 for anyone still deciding.
What we would say is that the last quarter before any tax deadline is a bad time to buy anything. Installer diaries fill, prices firm up, and the pressure to accept whatever slot is available goes up. If the 0% rate matters to you, the sensible window is spring to autumn 2026, not February 2027.
There is also a straightforward point that gets lost in deadline coverage: the VAT saving is small next to the difference between a well-designed system and a poorly-designed one. A £325 VAT saving is wiped out several times over by an array on the wrong pitch, an undersized inverter, or a battery specified without reference to how the household actually uses electricity.
What Actually Determines Whether Solar Is Worth It
The VAT position is a rounding error against the things that genuinely drive return.
Your electricity rate. The current Ofgem cap sits at 24.67p per kWh. Every unit you generate and use yourself is a unit you do not buy at that rate, so self-consumption is where the money is.
How much you use during daylight. A household that is out all day and uses electricity in the evening captures far less value than one with someone home, unless a battery shifts the generation. Typical self-consumption without storage is around 55%.
Export rate. Units you do not use are sold back under the Smart Export Guarantee, currently around 12p per kWh depending on supplier — roughly half what you pay to buy electricity. Exporting is worth having but it is not where the return comes from.
Roof orientation and pitch. South-facing at 30 to 40 degrees is optimal in the UK. East-west split arrays work well and often suit household consumption patterns better than a single south-facing array, because they generate across a longer day rather than peaking at noon.
Shading. A single chimney or tree shading one panel can drag down an entire string depending on how the system is configured. This is the most common design failure we see on systems installed by others.
On a typical 4kW installation in Dorset or South Wales, the combination of bill savings and export income runs to roughly £680 a year against a system cost near £6,500 — a payback period around nine and a half years, then a further fifteen years of return. The £325 VAT saving shortens that payback by roughly six months. Worth having, not decisive.
What Qualifies for 0% VAT?
The relief covers installation of qualifying energy-saving materials in residential accommodation. In practice, for a homeowner, that means:
Solar photovoltaic panels and the associated mounting, wiring and inverter. Battery storage, including batteries retrofitted to an existing solar array. Heat pumps. Insulation. Draught-proofing. Solar thermal.
Both equipment and labour are covered when supplied together as an installation by the installer.
What is not covered: buying panels or a battery yourself as a standalone product with no installation — that carries standard-rate VAT. Repairs and maintenance to an existing system are also outside the relief, which is why servicing, inspections and care plans are unaffected by any of this. Our £195 Solar MOT and care plans sit outside the energy-saving materials relief entirely and their pricing is not touched by the 2027 date.
If a specific case matters to you, HMRC's VAT Notice 708/6 sets out the qualifying conditions, and your installer should be able to confirm treatment in writing before you commit.
If You Already Have Solar
The deadline still matters to you in one specific way: adding battery storage to an existing array qualifies for the 0% rate.
This changed in February 2024, when retrofit batteries were brought into the relief — before that, only batteries installed at the same time as the panels qualified. If you have a system from the Feed-in Tariff era generating well but exporting most of it at 12p, adding storage before March 2027 is the case where the deadline genuinely bites.
Worth checking first whether the existing system is in good enough condition to justify the investment. We regularly inspect systems where the owner was about to spend £5,000 on a battery, and the array itself had a failed string or an inverter running at reduced efficiency that nobody had noticed. Fix the generation before you invest in storing it.
Thinking About Solar in Dorset, Hampshire or South Wales?
We install and maintain. The engineers who fit your system are the same ones who come back to service it, which is not how most of the industry works.
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Already have panels and wondering whether they are performing as they should? That is a different question, and a 21-point Solar MOT at £195 answers it.
Frequently Asked Questions
When does 0% VAT on solar panels end?
The 0% VAT rate on energy-saving materials, including solar panels and battery storage, is scheduled to end on 31 March 2027. To qualify, an installation must be completed and invoiced before that date. Government has signalled an intention to extend the relief, but this has not yet been enacted in legislation.
Will VAT on solar panels go to 20% after March 2027?
Almost certainly not. Energy-saving materials carried a reduced 5% VAT rate for over two decades before the 0% band was introduced in April 2022, and the expected position after March 2027 is a return to 5%. Claims that homeowners face a 20% increase are misleading.
How much will I lose if I miss the deadline?
Around 5% of the installed cost, assuming reversion to the reduced rate. On a £6,500 four-kilowatt system that is roughly £325. On a larger system with battery storage it could be £700. Meaningful, but small relative to the difference between a well-designed and badly-designed installation.
Does 0% VAT apply to batteries added to an existing solar system?
Yes. Since February 2024 the relief covers retrofit battery storage installed on its own, not just batteries fitted at the same time as panels. This is the situation where the March 2027 deadline is most likely to be worth acting on, particularly for Feed-in Tariff era systems exporting most of their generation.
Do I need to apply for 0% VAT?
No. There is nothing to claim and no form to complete. A qualifying installer simply does not charge VAT on the installation. If anyone asks you to apply or pay a fee to access the relief, that is not how it works.
Does 0% VAT cover solar panel maintenance and servicing?
No. The relief applies to the installation of energy-saving materials, not to repairs, servicing or inspection of existing systems. Maintenance work, including our Solar MOT and care plans, sits outside the relief and is unaffected by the March 2027 date.
Should I rush my installation to beat the deadline?
Not yet. A domestic installation typically takes four to ten weeks from survey to commissioning, so there is no timing pressure until around autumn 2026. Rushing into the final quarter before a tax deadline usually means worse availability and less room to get the design right.
Can I buy solar panels myself at 0% VAT?
No. The relief applies to supply and installation together. Panels or batteries bought as standalone products, without installation by the supplier, carry standard-rate VAT at 20%.
The Bottom Line
0% VAT on solar ends 31 March 2027 unless it is extended, and the likely position afterwards is 5% rather than 20%. On a typical domestic system that is a few hundred pounds.
Plan around it if you are already thinking about solar. Do not let it push you into a decision you would not otherwise make, and be a little sceptical of anyone using it to create urgency — including anyone in our industry.
The things that actually determine whether solar pays for you are your electricity rate, how much you use during the day, your roof, and whether the system is designed properly for your household. Get those right and the VAT treatment is a detail. Get them wrong and no tax relief will rescue it.
No1 Solar Care installs and maintains solar across South Wales and the South Coast.
01202 023069 (South Coast) | 029 2002 6002 (South Wales) | no1solarcare.co.uk/solar-check