VAT and Capital Allowances on Restaurant Solar

The tax treatment of a commercial solar install is worth thousands — and widely misunderstood, mostly because domestic VAT headlines get applied to commercial projects where they don't belong. Here is the 2026 position, plainly.

VAT: the 0% headline is not for you

Since 2022, energy-saving materials including solar panels have carried 0% VAT — for installations in residential accommodation, a relief currently scheduled to run until 31 March 2027 before reverting to 5%. Restaurants, pubs, cafés, and hotels are commercial premises, so commercial installs are standard-rated at 20%. That sounds like bad news until you remember how VAT works for a registered business: the 20% charged on your install is input tax, reclaimable in full on your next VAT return. The system costs what the ex-VAT price says it costs; the VAT is a few weeks of cash flow. The only operators for whom VAT is a true cost are the small minority below the registration threshold or on schemes that restrict recovery — if that is you, the quote comparison needs doing VAT-inclusive, and we will flag it.

One genuine edge case: premises with mixed use, such as a pub or restaurant with owner's accommodation above. Where a single installation serves both, apportionment rules can zero-rate part of the supply. It needs documenting properly at quote stage — another thing to raise early rather than at invoice.

The Annual Investment Allowance: the big one

Solar PV qualifies as plant and machinery for capital allowances. Under the Annual Investment Allowance, businesses deduct 100% of qualifying plant and machinery spend from taxable profits in the year of investment, up to £1m — a ceiling no restaurant solar project will trouble. The effect on project economics is direct. A £40,000 system bought by a company paying 25% corporation tax generates a £10,000 tax saving in year one, taking the effective net cost to £30,000 and cutting a 6-year payback towards 4.5. Sole traders and partnerships claim against income tax instead, so the saving runs at marginal rate.

Companies that have already consumed their AIA elsewhere (rare at restaurant scale, possible in a fit-out year) can use the 50% First Year Allowance for special rate assets where applicable, or standard writing-down allowances — slower relief, same total. Solar-with-battery systems qualify as a whole when installed together as one project. As ever: we provide the cost breakdown your accountant needs; they confirm the claim against your numbers.

SEG income and the expense side

The Smart Export Guarantee obliges larger suppliers to pay for exported generation. Rates vary widely between suppliers — switching your SEG provider is worthwhile and takes minutes — but at a few pence per kWh, export is the garnish, not the meal. For tax purposes SEG receipts are ordinary trading income. On the expense side, ongoing costs are deductible as incurred: monitoring subscriptions, the once-or-twice-yearly panel cleaning that food premises need (kitchen extract grease is real), inverter replacement when it eventually comes, and insurance adjustments.

EPC value: the quiet tax-adjacent benefit

Not a tax item, but it belongs in the same financial conversation. Solar improves a building's EPC rating, and the direction of regulation is one-way: MEES proposals point to commercial lettings requiring EPC C by 2027 and B by 2030. For tenants, that makes landlord consent conversations easier than they have ever been — your install improves their asset's compliance position at your expense. For owner-operators, it protects the building's lettable and saleable value. Either way, the EPC uplift belongs on the benefits side of the board paper, next to the payback numbers.

Putting it together

For a typical VAT-registered limited company, the stack works like this: reclaim the VAT (cash-flow neutral), deduct the full cost via AIA (worth 19–25% of the project), bank the energy savings (the engine of the deal), declare the modest SEG income, and hold the EPC improvement in reserve for the next lease event. None of it is exotic and all of it is standard practice — but quotes that ignore the tax position overstate payback by a year or more, and comparisons between installers only work on a like-for-like net basis. Our quotes show gross cost, VAT treatment, and the AIA effect at both 19% and 25% rates, so your accountant can verify rather than reconstruct. Start with the quote form, or read the full FAQ set first.

TAX QUESTIONS

VAT and allowances — quick answers

Does the 0% VAT rate apply to my restaurant?

No — and any installer suggesting otherwise should worry you. The zero rate for energy-saving materials, which runs until 31 March 2027, applies to installations in residential accommodation. Commercial premises pay standard-rate VAT at 20%. If you are VAT-registered (almost every restaurant above the threshold is), you reclaim it in full on your next return, so it is a cash-flow consideration rather than a cost.

How much is the AIA actually worth to me?

The Annual Investment Allowance lets you deduct 100% of qualifying plant and machinery — solar included — from taxable profits in the year of purchase, up to £1m. On a £40,000 system, a limited company paying 25% corporation tax saves £10,000; at the 19% small profits rate, £7,600. A sole trader or partnership deducts against income tax instead, so the value depends on your marginal rate.

What if my business makes a loss this year?

Capital allowances can create or increase a loss, which carries forward against future profits (or, for companies, can sometimes be carried back). You do not lose the relief — it just lands later. Worth a conversation with your accountant about timing: in some years claiming writing-down allowances instead of the full AIA produces a better multi-year result.

Is Smart Export Guarantee income taxable?

For a business, yes — SEG receipts are trading income like any other. They are usually modest at restaurant scale (we size systems to minimise export), but they belong in the accounts. The far larger benefit, avoided electricity purchases, simply shows up as a lower expense line.

Does solar affect my business rates?

Plant and machinery used for generating power can in principle affect rateable value, but microgeneration installations benefit from an exemption: solar PV capacity up to and including 50 kW added since 2023 is exempt from business rates valuation in England until 2035. Most restaurant systems sit inside that threshold. Larger hotel systems should take ratings advice.