Solar Hire Purchase: VAT and Balloon Payments Explained

5 min read · Updated 2026-10-20 · Tax & accounting

How VAT works on commercial solar hire purchase, what a balloon payment does to the monthly cost, and when an optional final payment changes the VAT treatment.

Quick answer: On a genuine hire purchase, VAT falls due on the full value of the system at the start, and a VAT-registered business reclaims it, so the balloon question is mainly about the monthly payment and total cost. A balloon of 20% on a £160,000, six-year deal at 8.5% APR cuts the monthly payment by about £346 and adds about £7,110 to the cost of credit. The one case where a final payment changes the VAT is an optional final payment set at or above the asset’s expected market value, which HMRC treats as leasing.

This is the detail that sits behind a hire purchase quote. For the structure itself see solar hire purchase; for the choice between routes see hire purchase, finance lease and operating lease compared.

VAT on hire purchase

HMRC’s time-of-supply manual (VATTOS9250) treats hire purchase, credit sale and conditional sale as supplies of goods, with VAT due on the full value at the tax point, which is generally delivery. That has two consequences for a solar project:

Cash flow. The VAT on the system is payable at the start, even though the price is paid over several years. A VAT-registered business reclaims it on its next return, so it is a timing item. Some funders add the VAT to the financed amount, others expect it in cash.
Net cost. A business that recovers its VAT has no VAT cost in the end. The calculations on this site are net of VAT for that reason. See also VAT on commercial solar for the rate that applies to the installation itself.

By contrast, a lease is a supply of services, charged on each rental. That spreads the VAT across the term, which helps a business that does not want the up-front cash call. It does not change the net cost for a VAT-registered business.

What a balloon does to the numbers

A balloon (some funders say residual or final payment) is a lump sum due at the end. The monthly payments cover the rest. The figures below are arithmetic on a £160,000 system financed over six years at an illustrative 8.5% APR, with no deposit and no fees. They are not a quote.

Balloon	Balloon amount	Monthly payment	Total of payments plus balloon	Cost of credit
None	£0	£2,820	£203,030	£43,030
10%	£16,000	£2,647	£206,585	£46,585
20%	£32,000	£2,474	£210,140	£50,140
30%	£48,000	£2,301	£213,696	£53,696

Each step of 10% takes about £173 off the monthly payment and adds about £3,500 to the cost of credit, because the balloon stays outstanding for the whole term. The right way to read it is as a loan on part of the system that you do not start repaying until year six. The hire purchase, loan and lease calculator models a lease with a residual; for hire purchase with a balloon, put the balloon quote through the solar finance calculator as a shorter, smaller loan and add the lump sum at the end.

When the final payment changes the VAT

HMRC’s Revenue and Customs Brief 1 (2019) follows the CJEU’s Mercedes-Benz Financial Services decision. It covers personal contract purchases and similar contracts, where the customer makes a series of lease payments and then chooses whether to pay a final optional payment to acquire the asset or return it. The test compares that optional payment with the anticipated open market value of the asset when the option is exercised:

At or above market value: the contract is a supply of leasing services from the start. VAT applies to the full value of each instalment.
Below market value: the customer is expected to buy the asset, so the contract is a supply of goods with separate exempt finance, and VAT on the goods is due in full at the start.

The brief is not limited to cars; it refers to PCP “or similar” contracts for any asset. HMRC says it will generally accept a below-market setting where the payment is below the value implied by historical depreciation for the same or similar assets, and businesses must keep records of how they reached the figure. The brief applied to new contracts from 1 June 2019.

For a solar buyer the practical point is about structure. A deal that is really a lease with an optional buy-out at a high residual may be leasing for VAT even if it is called hire purchase. A true hire purchase, where the buyer is obliged to complete and pays a small option fee, sits on the goods side. If a quote has a large final payment that you can walk away from, ask the funder which treatment it applies and get it in writing.

Capital allowances and the balloon

Under hire purchase the business is treated as the owner from the start and claims the capital allowances, whatever the balloon. Solar PV is special-rate plant, so the claim is through the Annual Investment Allowance, up to £1,000,000 a year, or the 50% first-year allowance above it (HS252); full expensing does not cover solar. If the agreement is really a lease, the long funding lease tests decide who claims, and the long funding lease guide sets them out. The capital allowances page works through the relief itself.

Questions to ask before you accept a balloon

Is the final payment obligatory, or optional? Optional payments raise the VAT question above.
How will the VAT on the system be funded at the start, in cash or added to the amount financed?
What happens at the end if you cannot pay the balloon: refinance, extend, or hand the system back?
What are the documentation and option-to-purchase fees? They are not in the table.
Does the monthly saving cover the lower payment on its own? If it already covers the full repayment, a balloon mostly adds cost. See what a business electricity rate means for the saving.

This is a summary of published guidance and not tax advice. This site is not a lender and not an installer. To test a structure, send the system cost, term and balloon through the quote form and we reply by email.

Frequently asked questions

When is VAT charged on solar hire purchase?

HMRC treats hire purchase as a supply of goods, with VAT due on the full value at the time of supply, which is normally delivery. A VAT-registered business reclaims that VAT in its ordinary return, so the effect is on cash flow in the first quarter, not on the net cost. By contrast, a lease is a supply of services and VAT is charged on each rental.

What is a balloon payment on solar finance?

A balloon is a larger final payment that lowers the monthly payments during the term. On a £160,000 system over six years at 8.5% APR, a 20% balloon of £32,000 reduces the monthly payment from about £2,820 to about £2,474, but raises the total cost of credit from about £43,030 to about £50,140.

Can a balloon change the VAT treatment?

It can. HMRC's Revenue and Customs Brief 1 (2019) concerns contracts where the customer pays a series of lease payments and then chooses whether to pay a final optional payment to keep the asset. If that final payment is at or above the expected market value of the asset, the contract is treated as leasing services from the start, with VAT on each instalment. If it is below market value, the goods treatment stands. If your quote has a large final payment that you can walk away from, ask how the funder treats the VAT.

Does a balloon change who claims the capital allowances?

Not by itself. Under a genuine hire purchase agreement the business is treated as the owner from the start and claims the allowances. A contract that is really a lease with an option to buy is a different structure, and the long funding lease rules decide who claims. The answer depends on the agreement, so have your accountant read it.

Is a balloon a good idea on solar?

It trades a lower monthly payment for a higher total cost and a lump sum you must fund or refinance at the end. It can suit a business that expects to refinance or sell, or whose energy saving builds over time. If the saving already covers the full repayment, a balloon mostly adds cost.