Business energy deemed rates: how to avoid them in the UK
Deemed rates can apply when your business uses energy without agreeing a contract (for example after moving premises or rolling out of a fixed deal). They’re often higher and harder to budget for. This guide explains exactly when they apply and the practical steps to get off them.
- Fast checks to see if you’re on deemed rates (and what to ask your supplier)
- Clear action plan: move-in, renewals, meter details, and switching timelines
- UK-specific caveats for microbusinesses, smart meters, and multi-site premises
We’re whole-of-market: quotes and availability depend on meter type, usage, credit checks and supplier criteria. No savings are guaranteed.
Fast answer: business energy deemed rates avoid UK
To business energy deemed rates avoid UK, agree a new contract (or a deemed-to-contracted arrangement) as soon as you take supply: confirm the supplier and MPAN/MPRN, provide opening meter reads, and request a formal quote or switch. Deemed rates apply when you’re using energy without an agreed contract—often after moving in, takeover, or contract end.
Key takeaway 1
If you’ve just moved in, you can’t choose “no supplier” — you’ll be supplied and billed. Deemed charges can start immediately until you agree terms.
Key takeaway 2
The fastest way off deemed rates is usually: provide reads + confirm legal entity + accept a contract with your current supplier or switch (depending on meter and eligibility).
Key takeaway 3
Microbusinesses may have extra protections around contract terms and sales practices, but deemed rates can still apply if there’s no agreed contract.
Quick self-check: if your bill mentions “deemed”, “out of contract”, “default”, “variable”, or you didn’t actively agree to your current unit rates/standing charge, treat it as urgent—ask for your current tariff name, contract end date (if any), and how to move to a contracted deal.
How to avoid deemed rates (practical UK steps)
Use this as a checklist whether you’re moving in, renewing, or suspect you’ve fallen onto deemed rates. The aim is to get a confirmed contract on your meter(s) and accurate billing from the right start date.
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Confirm who supplies the premises now (don’t assume the landlord knows).
Ask the current supplier for the MPAN (electricity) and/or MPRN (gas), meter serial number and current status (contracted, deemed, or out-of-contract). If you have multiple meters (e.g., shop + signage supply), confirm each one.
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Take opening meter readings on day one (with photos).
Send readings to the supplier immediately and keep dated photos. This reduces disputes and helps stop you paying for a previous tenant’s usage.
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Tell the supplier the legal entity responsible for the bill.
Provide company name, trading name (if different), registered address, and the date you took responsibility. If you’re a sole trader, make that clear.
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Request a contracted quote (or a formal renewal) before you use more energy.
Even if you plan to switch, getting a contract option from the current supplier can be the quickest route off deemed rates while you compare alternatives.
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Compare whole-of-market offers and switching constraints.
Switching speed and eligibility can depend on meter type, credit checks, debt at the meter, and whether the supply is domestic-registered or business-registered. A quote search helps you see what’s actually available for your postcode and usage.
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Get the contract start date in writing and check your first bill.
Confirm: rates, standing charges, contract length, billing frequency, and any fees/terms. When the first bill lands, verify the opening read and the date deemed charges stopped.
Important: Deemed/out-of-contract terms aren’t a “cooling-off” period. If you’re consuming energy while paperwork is unresolved, costs can rack up quickly—especially in high-use businesses (hospitality, laundrettes, workshops).
Get business energy options for your meter
Submit your details and we’ll return available business energy options. This can help you move off deemed rates by finding a contract that fits your usage and billing preferences.
Two realistic scenarios (with numbers)
These examples show how deemed periods can affect cashflow. They use illustrative rates (not live tariffs). Your actual rates depend on supplier, region, meter type, and contract terms.
Scenario A: new café moves in (electricity)
- Assumptions: 2,000 kWh/month; 30 days; standing charge applies daily.
- Illustrative deemed period: 21 days before agreeing a contract.
- Illustrative cost difference: If deemed unit rate is 10p/kWh higher, extra energy cost ≈ 2,000 × (21/30) × £0.10 = £140 (plus any standing charge differences).
Why it happens: keys collected before admin is done; no opening read submitted; supplier account not set up promptly.
Scenario B: small warehouse rolls off contract (gas)
- Assumptions: 9,000 kWh/month gas in a cooler month; contract ends and no renewal agreed for 45 days.
- Illustrative cost difference: If out-of-contract/deemed is 4p/kWh higher, extra ≈ 9,000 × (45/30) × £0.04 = £540.
Why it happens: renewal missed, decision delayed, or confusion over who can sign (director vs site manager).
Use the scenarios as a warning sign, not a quote. The “extra cost” is driven by (a) how long you stay on deemed/out-of-contract terms and (b) your consumption. High usage + long delays = biggest risk.
Deemed rates vs contract vs out-of-contract: what’s the difference?
Suppliers use different labels, but the key point is whether you have actively agreed contract terms for the meter. Here’s a plain-English comparison to help you decide your next move.
| Supply status | Typical trigger | What it means for cost certainty | Best next action |
|---|---|---|---|
| Deemed rates | You take supply without agreeing a contract (move-in, takeover, tenancy change). | Often variable and can be higher; budgeting is harder until you agree terms. | Confirm supplier + reads, then request a contract quote or switch as soon as possible. |
| Out-of-contract / rollover | Your fixed term ends and you don’t renew, or you miss the renewal window. | Rates can change; you may lose any fixed-price protection you had. | Ask current supplier for renewal terms and compare alternatives before committing. |
| Contracted (fixed or flexible) | You’ve agreed terms for a period (or a structured flexible plan). | Generally clearer pricing structure and billing expectations (subject to contract terms). | Check end date, notice period, and any fees before switching or renegotiating. |
Decision checklist: who this suits
- You should act immediately if you’ve moved in, taken over a lease, or your bill looks unfamiliar.
- You’ll benefit from comparing if you have stable usage and want predictable bills.
- It’s especially important for high-consumption sites (kitchens, refrigeration, machinery, long opening hours).
Who it may not suit (or needs extra care)
- Short-term pop-ups where the landlord retains responsibility (get it in writing).
- Complex sites with multiple meters/sub-meters—confirm exactly what you’re responsible for.
- Businesses with arrears at the meter: switching may be restricted until resolved.
Microbusiness note: UK rules can treat some small firms similarly to domestic customers for certain protections (definition can depend on staff count and annual consumption). If you believe you qualify, ask the supplier how they apply microbusiness protections to your account and renewal.
Costs, exclusions and common pitfalls (UK)
Deemed and out-of-contract charges aren’t “one thing” — what you pay can change with your meter, location, and how quickly admin is sorted. These are the most common reasons businesses get stuck paying more than expected.
Pitfall: no opening read
Without a dated opening read, suppliers may estimate usage across the changeover—raising dispute risk. Take photos and email them on move-in day.
Pitfall: wrong responsible party
Leases can be unclear on utilities. If the landlord promised “bills included”, get it in writing and ask who holds the supplier account.
Pitfall: multiple meters
One premises can have several MPANs/MPRNs. If you only contract one, the other can remain on deemed rates.
Pitfall: billing delays
If accounts aren’t set up quickly (legal entity mismatch, missing tenancy dates), deemed charges can keep running in the background.
Pitfall: exit fees & notice
If you’re actually in a contract (not deemed), leaving early can trigger fees. Always confirm your contract status before switching.
Pitfall: assumed “price cap”
The domestic Ofgem price cap doesn’t generally apply to business energy in the same way. Don’t assume your default rates are capped.
If you think you’ve been wrongly put on deemed rates
- Ask the supplier to explain the basis for deemed supply and the start date.
- Send proof of your move-in/takeover date and opening readings.
- If you’re a microbusiness, ask how they handle complaints and dispute routes for microbusiness customers.
- If unresolved, you can seek independent guidance from Citizens Advice energy supply guidance.
FAQs
What are deemed rates for business energy in the UK?
Deemed rates are the prices a supplier charges when your business is using electricity or gas without having agreed a contract for that meter. This commonly happens after you move into new premises, take over a site, or there’s been no agreed renewal. The supplier still has to supply you, and you still have to pay for what you use.
How do I check if my business is on deemed or out-of-contract rates?
Look for wording on your bill such as “deemed”, “out of contract”, “default”, or “variable”. If you didn’t actively agree current unit rates and standing charges, call the supplier and ask: (1) your contract status, (2) the tariff name, (3) the date the current rates started, and (4) what you need to do to move onto a contracted deal.
Can I switch supplier if I’m on deemed rates?
Often yes, but it depends on your meter details, whether the account is correctly set up, and whether there are restrictions (for example debt linked to the supply, or incomplete occupancy information). In practice, some businesses find the fastest route is to get a contract agreed first (to stop deemed charges) and then compare switching options.
What should I do on the day I move into business premises to avoid deemed rates?
Take opening meter readings (with photos), find out who currently supplies the premises, and contact the supplier immediately with your move-in date and legal entity details. Ask for your MPAN/MPRN and request a contract quote. If you plan to switch, start the quote process straight away so there’s minimal time on deemed terms.
Are business deemed rates covered by the Ofgem price cap?
The domestic Ofgem price cap is designed for household energy. Business energy pricing works differently, and you shouldn’t assume deemed or out-of-contract business rates are capped. For regulator context, see Ofgem’s guidance on who the price cap affects.
Do microbusinesses have extra protections if they end up on deemed rates?
Microbusinesses can have extra protections around how contracts are sold and how disputes are handled, but deemed rates can still apply if there’s no agreed contract. If you think you qualify as a microbusiness, ask the supplier to confirm your classification and explain your options to move onto a contracted tariff.
Can my landlord choose my business energy supplier?
It depends on your lease and how the building is metered. If you have your own meter, you can usually choose your supplier (subject to contract status and switching rules). If energy is recharged via a landlord or managing agent (for example sub-metering), you may not have supplier choice—ask for the metering arrangement and billing breakdown in writing.
What information do I need to get off deemed rates quickly?
Have your business details (legal name and address), the supply address, move-in or takeover date, opening meter readings, meter serial number, and MPAN/MPRN if available. Also note whether you want a single bill or multi-site billing. The more complete the information, the less time you spend in deemed status.
Trust, methodology and sources
Page governance
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- July 2026
How we assess “deemed rates” guidance
- User intent: we prioritise actions that stop deemed charges quickly (confirm supplier, readings, contract/switch steps).
- UK specificity: we include MPAN/MPRN, tenancy changeovers, multi-meter premises, and microbusiness considerations.
- Commercial neutrality: we don’t recommend named tariffs or publish live unit rates/standing charges (they change and are meter-specific). We focus on decision-making and process.
- Limitations: switching eligibility, timelines and terms vary by supplier and meter type; this page can’t replace your supplier’s contract documents or legal advice.
Sources (UK)
- Ofgem (regulatory context and consumer information)
- Citizens Advice: energy (practical steps and dispute guidance)
- GOV.UK (business and consumer rights signposting)
We link to general reference pages because supplier terms and detailed industry documents can change location and wording over time.
Want to move off deemed rates faster?
Run a whole-of-market comparison for your business meter and get contract options that may reduce uncertainty versus deemed or out-of-contract pricing.
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