Are you on deemed, rollover or out-of-contract business energy rates?
Many UK businesses unknowingly fall onto deemed or default energy rates after moving premises or missing renewal windows. This quick checker helps you assess whether your current contract position may need attention.
Business Energy Deemed Rates UK (2026 Guide)
Deemed business energy rates apply when a business is taking electricity or gas without a formal agreed contract in place. They can arise after moving into premises, after contract expiry, or where renewal and account handling have not been completed properly.
Use this page to understand what deemed and rollover exposure can look like, why it matters commercially, and whether your current contract position may need attention now.
Use this guide alongside our Business Energy Switching Guide, Contract Length Guide and Hidden Commission Guide.
What are business energy deemed rates?
A deemed rate is a supplier’s default tariff used when a business is consuming energy without a formal agreed contract. This can happen when a business moves into a property, where a previous contract has ended without a clear replacement, or where billing and account ownership have not been regularised correctly.
Deemed rates are often less commercially favourable than negotiated contract terms. They may also leave a business with less price certainty, weaker renewal leverage and less clarity over the account position.
No formal agreed contract currently in place, or an unclear account position needing verification.
It can lead to default supplier pricing, weaker negotiation position and avoidable procurement drift.
Your contract end date, latest bill wording, renewal notices and whether the current occupier account is set up correctly.
When businesses usually end up on deemed or rollover-style terms
Moving into a new property
If a business starts using electricity or gas at a premises before agreeing a formal contract, the supplier may place the site on deemed terms until the account position is regularised.
Contract expiry without clear follow-through
If an agreement reaches end of term and the business has not switched, renewed or documented the next position properly, there may be exposure to default, rollover or less competitive terms.
Unclear account handling
Occupier changes, tenancy changes, inherited accounts, meter confusion or slow supplier administration can all create contract uncertainty that needs checking promptly.
Business Energy Contract Exposure Checker
This tool is designed to do more than give a simple low, medium or high label. It looks at timing, contract clarity, possible deemed or rollover indicators, and what your next checks should be.
No tariff confirmation
No guaranteed savings
This checker provides editorial, indicative guidance only. It does not confirm tariff status, contract validity, supplier pricing or savings outcomes.
Your result will appear here
Complete the fields and run the checker to see your indicative risk level, timing position, likely commercial exposure areas, confidence level and practical next steps.
What is the difference between deemed and rollover business energy terms?
These terms are often discussed together, but they are not always the same thing.
Deemed terms
Usually relate to a business taking supply without a formal agreed contract in place. This is common after moving into a premises or where the occupier account has not yet been regularised.
Rollover or default end-of-term exposure
Usually relates to what happens when an existing contract ends and renewal or switching is not handled clearly or on time. This can leave a business on terms that may be less competitive or less well understood than a proactively negotiated arrangement.
In practical terms, both situations can leave a business exposed to weaker commercial positioning. That is why the more useful question is often not “which label applies?” but “is the current contract position clear, documented and commercially suitable?”
Why deemed and out-of-contract exposure matters commercially
Businesses may end up on terms that are less competitive than a deliberately negotiated contract.
Leaving contract clarity too late can reduce decision time and make procurement more reactive.
Unclear account status can make budgeting, approval and commercial review more difficult.
Meter details, occupier records and supplier communications can all become harder to resolve when the account position is not checked early.
How to check whether your business may be on deemed or default terms
The strongest first step is usually a document check rather than a price comparison exercise. Before focusing on quotes, confirm the account position itself.
Check your latest bill
- Does it mention deemed, out of contract, variable or default wording?
- Is the contract end date shown clearly anywhere?
- Does the supplier account name match the current occupier?
Check contract paperwork
- What was the formal contract end date?
- Was a renewal or switch actually confirmed in writing?
- Do you know the relevant notice or renewal window?
Check practical account facts
- Did you recently move into the premises?
- Were meter details and occupier details set up correctly?
- Has there been any tenancy, landlord or site-handover complication?
Need a deeper review of your contract position?
If your result suggests medium or high exposure, a structured review can help confirm the account position, identify what needs checking next, and clarify the most sensible route forward for your business.
This is not a promise of savings. It is a practical contract-position review route for businesses that want more clarity.
Related guides
Business Energy Switching Guide
Understand renewal timing, switching process issues and how to avoid being rushed into the wrong next step.
Business Energy Contract Length Guide
Review how term length affects flexibility, renewal pressure and overall procurement timing.
Hidden Commission Guide
Read more about broker payment structures and what should be explained clearly before any contract is agreed.
Compare Business Energy Brokers
Use our comparison page if you want a broader view of broker fit before moving into quote or renewal discussions.
Business energy deemed rates FAQs
What is a deemed contract in business energy?
A deemed contract is a supplier’s default arrangement used when a business is taking gas or electricity without a formal agreed contract in place. This often happens after moving into premises or where the supplier account has not been regularised correctly.
Are deemed rates the same as rollover rates?
No. They are related but not always identical. Deemed rates usually relate to supply without a formal agreed contract, while rollover exposure usually relates to end-of-term renewal mechanics. Both can indicate a weaker contract position that deserves checking.
Can a business move off deemed rates?
In many situations, yes. The right route depends on the supplier position, occupier status, meter details and whether there is already any confirmed contract in place.
Does an expired contract mean a business is definitely on deemed rates?
Not necessarily. It may indicate exposure to rollover, default or out-of-contract terms, but the exact position depends on what has already been agreed and how the supplier has treated the account.
Does this page provide tariff advice?
No. This page provides practical editorial guidance only. It does not confirm tariffs, guarantee cost reductions or provide a regulated-style recommendation.