MCS, consumer codes, building regs — installers already carry plenty of accreditation. FCA authorisation is separate from all of it. None of those schemes covers the one thing the FCA regulates: helping a homeowner borrow to pay you.

Offering pay-monthly is credit broking

If your sales process includes a finance option — a lender's calculator in your quote, an application completed at the kitchen table, a “from £X a month” route on your website — you are effecting introductions to a lender, and that is credit broking: a regulated activity requiring FCA authorisation. Your customers are homeowners, which makes the lending consumer credit, and the fact that finance is a means to sell installations rather than a business in itself doesn't take you outside the rules — it just points you at the lighter tier (more below). Selling in customers' homes adds its own wrinkle, covered in our home improvement guide.

Why the 0% exemption almost never helps here

Retailers sometimes escape authorisation by lending interest-free themselves within the narrow exemption — free of all charges, repaid within 12 months, in no more than 12 instalments. Home energy economics point the other way: systems are sized to be paid from savings over years. A £12,000 system repaid inside 12 months defeats the point of pay-monthly, so real-world solar finance runs on 3, 5 or 10-year terms — every one of them outside the exemption. The full test is in our 0% finance guide, but for installers the practical answer is simple: if you offer finance, plan on being authorised.

A related trap: “subsidised” interest-free deals where the installer funds the lender's charges behind the scenes are still regulated credit agreements being brokered — the exemption is about the customer's agreement, not who ultimately bears the cost.

Which permission an installer needs

For an installation business broking finance as part of selling systems, limited permission secondary credit broking is the usual route — the lower-cost tier for firms whose main trade isn't finance. The application is built on a regulatory business plan describing your actual installation business, proportionate compliance policies, and a named SMF29 responsible person. Lenders' onboarding teams will ask for your FCA number before activating you — for most installers, authorisation is the gateway to having a finance offer at all.

Watch the savings-and-finance advertising

Renewables marketing leans on numbers — “pays for itself”, “from £89 a month”. The moment a promotion references the finance, the FCA's financial promotion rules apply: clear, fair, not misleading, with representative examples where monthly costs are quoted. Getting authorised is also the point at which your marketing needs to grow up.

What it costs

The FCA's limited permission application fee is £560. Our fixed-price service prepares the complete application pack for £995, ready in three working days — full numbers in the cost guide.