Russell Andrews
The solar VAT deadline is 31 March 2027: qualifying home solar and battery installations are scheduled to move from 0% to 5% VAT on 1 April 2027. Our advice is to plan your installation early, but not assume that booking before April secures zero VAT. The relevant VAT timing rules also matter. (gov.uk)
By Russell Andrews
Guidance checked on 30 September 2026. This explains the published rules, rather than providing individual tax advice.
What the solar VAT deadline actually changes
The scheduled change is to the reduced rate of 5%, not the standard rate of 20%. It applies to qualifying installations across the UK, including Northern Ireland. Treat 31 March 2027 as the current planning deadline, rather than assuming the government will extend it. (gov.uk)
VAT on solar panels depends on what is supplied and where it is installed. The relief covers qualifying installations in residential accommodation and certain buildings used solely for relevant charitable purposes. It also covers the equipment supplied by the business installing it. Buying equipment separately, without installation, does not receive this relief. (gov.uk)
Batteries do not have to accompany new panels
Battery storage VAT relief was expanded on 1 February 2024. Qualifying installations include a battery added to existing solar panels, a standalone battery storing grid electricity, or one storing both. You do not need to order new panels simply to make an eligible battery installation qualify. (gov.uk)
For a new system, explore our residential solar options. If you already have panels, our home battery storage service is the relevant starting point. Choose the project around what your home needs, rather than expanding the order purely because a tax deadline is approaching.
Does booking before April protect the VAT rate?
A booking alone does not fix the VAT rate. VAT uses a timing rule called the tax point: the date a supply is treated as taking place for tax purposes. Completion and advance payments matter, not simply the day you accept a quote. (gov.uk)
For services, the basic tax point is normally when the work is completed. A genuine advance payment normally creates an earlier tax point for the amount received. That means a deposit does not automatically protect the unpaid balance. (gov.uk)
An invoice is not a universal shortcut either. HMRC specifically states that an invoice for a zero-rated supply does not create a tax point. Do not assume that an unpaid March invoice guarantees zero VAT for work carried out in April. (gov.uk)
Work spanning the change needs individual assessment. HMRC provides change-of-rate rules, including possible apportionment for measurable work completed on either side of the deadline. Starting before April is therefore not a blanket guarantee that the whole job remains zero-rated. (gov.uk)
Our recommendation is to request written clarification of the VAT treatment alongside your proposed solar installation date. Keep the contract, payment records and completion paperwork together. Do not make an unusually large advance payment solely to chase a tax advantage without understanding the contractual position.
What should you allow for in your budget?
If the entire qualifying supply becomes subject to 5% VAT, the tax is calculated on its price before VAT. Holding that price unchanged, the total would be 5% higher than at zero VAT. This is an illustration of the tax change, not a forecast of our future prices. (gov.uk)
For your solar installation cost, focus on the final amount payable and what the quote includes. Our advice is to check these points before committing:
The equipment and installation work included in the agreed scope.
The price before VAT, applicable VAT rate and total payable.
The payment schedule and treatment of any advance payment.
What happens to the agreed price if the installation date changes.
Do not assume every item in a wider home-energy project shares the same VAT treatment. HMRC distinguishes between a single qualifying supply and separate supplies, which may attract different rates. Commercial premises also need their own eligibility assessment rather than applying household rules automatically. (gov.uk)
If spreading the cost is part of your plan, visit our flexible solar finance page and speak to our team about the exact terms. Keep affordability separate from deadline pressure: the right payment arrangement should work for your household beyond March 2027.
How to plan your installation without rushing the decision
We recommend working backwards from a realistic completion target, rather than treating the final day of March as your preferred appointment. The solar VAT deadline is a reason to begin the conversation, not a reason to skip questions about the proposed system.
Bring the following information to your discussion with us. It helps keep the conversation focused on your property and priorities:
Your intended scope: panels, a battery, or both, plus details of any existing system.
Your property plans: mention proposed roof work, renovations or access restrictions.
Your preferred timing: explain whether completing before April is a priority and identify dates you cannot accommodate.
Your budget: consider what you could comfortably commit to if the project falls after the scheduled change.
Before accepting a proposed date, ask what still needs to be resolved and what would happen if the programme changes. A clear plan is more useful than an assumption that everything will fit into the last week of March.
Ready to discuss your property? Request a free quote and tell us whether you are considering panels, a battery retrofit or a combined installation. Make your timing priority clear from the outset, alongside the questions you want answered before proceeding.