What is a fix-and-fall energy tariff?

A fix-and-fall (also called a ‘fixed with a fall’) tariff fixes your unit rates for a set term, but includes a promise to reduce those rates if the supplier’s equivalent tariff price drops during your contract. You get price certainty, with a mechanism to benefit from market drops without switching.

Are fix-and-fall tariffs worth it in March 2026?

They can be worth it if you want protection from price rises but don’t want to miss out if prices fall. Compare the fixed unit rates, standing charges, the supplier’s fall-tracking rules, and any exit fees. If you charge an EV at home, also check whether an EV or off-peak tariff could beat a fix-and-fall deal for your usage pattern.

How does the ‘fall’ part work—do prices reduce automatically?

It depends on the supplier and product terms. Some apply reductions automatically when their equivalent tariff drops; others review periodically or apply changes after set triggers. Before switching, confirm: what is being compared, how often reductions are checked, when changes take effect, and whether reductions apply to both unit rates and standing charges.

Do fix-and-fall tariffs have exit fees?

Many fixed-term tariffs can include exit fees, especially if you leave before the end date. Always check the tariff information label or key terms for any early termination charges and whether they apply to electricity, gas, or both.

Can I switch to a fix-and-fall tariff if I have an EV charger?

Yes. Your EV charger doesn’t prevent you switching energy tariffs. If you primarily charge at home, consider whether a dedicated EV time-of-use tariff (with cheaper off-peak hours) could save more than a fix-and-fall tariff—especially if you can schedule charging overnight.

Is a smart meter required for the best EV charging savings?

Often, yes. Most EV time-of-use tariffs and smart charging features work best with a smart meter to accurately measure usage by time period. If you don’t have one, you can still compare standard tariffs, but you may miss some off-peak charging deals.

What should I compare when choosing the best fix-and-fall energy deal?

Compare unit rates (electricity and gas if applicable), standing charges, contract length, exit fees, payment method discounts, and the exact fix-and-fall mechanism (what triggers a reduction and how quickly it’s applied). Also check customer service ratings and whether the supplier supports smart tariffs if you have an EV.

How do I find the best tariff for EV charging at home?

Estimate your monthly mileage, kWh per mile, and how much charging you do at home. Then compare EV/off-peak tariffs versus fix-and-fall or standard fixed deals based on your likely off-peak usage. If you can shift most charging to off-peak hours, an EV tariff may deliver higher savings than a general fixed deal.

Where can I get help choosing and switching to the right energy tariff?

Use EnergyPlus to review and compare options, then follow the switch steps provided on the site. Start here: https://www.energyplus.co.uk/ev-charger/best-fix-and-fall-energy-tariff-deals-uk-march-2026

Best fix and fall energy tariff deals UK (March 2026)

A UK homeowner/tenant guide to choosing between fixed, variable and “fix and fall” style deals—what they really mean, who they suit, and how to compare tariffs safely.

Get a whole-of-market comparison (including exit fees, payment method and meter type)
Understand “fix and fall” options and how price drops (and rises) can affect you
See realistic cost scenarios and the pitfalls that catch people out

Get your energy quote How switching works

Estimates only. Tariffs, eligibility and unit rates vary by region, meter type, payment method and credit checks. Always check the supplier’s tariff information label (TIL) before you switch.

Fast answer: what are the best “fix and fall” deals in March 2026?

In the UK, “fix and fall” usually refers to tariffs that protect you if prices rise (like a standard fixed deal) but also let you benefit if market prices drop. That benefit can be delivered in different ways—so the “best” deal depends on how the drop is applied and what it costs you to leave.

Important: There is no single regulated definition of “fix and fall”. Suppliers may call products “fixed with tracker”, “fixed with review”, “fixed with drop guarantee” or similar. Always check the tariff’s exit fees, price review rules and whether discounts apply to unit rates, standing charges, or as a bill credit.

If you want budget certainty

Start with fixed deals and only consider “fix and fall” options if the fall mechanism is clear and the exit fees won’t trap you.

If you think prices may drop

Compare a low-exit-fee fixed deal versus a tracker/variable. Often the simplest “fall” option is the ability to switch again cheaply.

If you have a smart meter

Check if a supplier offers time-of-use add-ons. They’re not “fix and fall”, but can cut costs if you can shift usage (e.g., overnight).

Key takeaways (quick checklist)

Region matters: unit rates and standing charges vary across Great Britain distribution regions.
Meter matters: single-rate, Economy 7/10, smart and prepayment prices can differ materially.
Payment method matters: Direct Debit tariffs often differ from pay-on-receipt or prepay.
Exit fees can erase any “fall” benefit: always compare the total cost if you leave early.
Standing charge changes can dominate: don’t only look at unit rates.

What “fix and fall” means (and the 4 common UK versions)

Because suppliers use different wording, we assess “fix and fall” deals by the mechanism that passes price decreases to you.

1) Fixed tariff with a “price review” clause: Unit rates are fixed, but the supplier may reduce them at set review points (for example, quarterly). Check: Is the review guaranteed? Or discretionary?
2) Fixed tariff with a “tracker element” or linked discount: You get a fixed cap, plus a discount that can increase if an index falls. Check: Which index? How often is it updated? Are there floors/ceilings?
3) Fixed tariff + “bill credit if prices fall”: Your unit rates may stay fixed, but you receive a credit if certain conditions are met. Check: Credit size, timing, and eligibility (often you must remain on supply).
4) Low/zero exit fee fixed tariff (the “practical fix and fall”): Not marketed as “fix and fall”, but it lets you re-fix quickly if better deals appear. Check: exit fee per fuel, minimum term, and any switching restrictions.

Consumer protection: In Great Britain, switching rules and supply licence conditions are overseen by Ofgem. If you’re in Northern Ireland, the market and regulator differ (and comparisons may not be like-for-like).

Compare fix, variable and “fix and fall” deals

Tell us a few details and we’ll show suitable household tariffs. We’ll highlight where prices can move, and any exit fees to watch.

Tip: If you’re on a fixed deal now, check your exit fee per fuel and whether you’re within the supplier’s switching window near the end of your tariff.

Two realistic household scenarios (with numbers)

These are illustrative examples to show how “fix and fall” mechanics and exit fees can change the outcome. Your actual quotes will vary by region, tariff, standing charge, and when you use energy.

Scenario A: Low-use flat, wants certainty but may re-fix

Home: 1–2 bed flat (single-rate meter), Direct Debit
Assumed annual use: 1,800 kWh electricity, 7,000 kWh gas
Assumed “fixed” unit rates: 28p/kWh elec, 7.2p/kWh gas
Assumed standing charges: 55p/day elec, 32p/day gas
Exit fees: £50 per fuel if leaving early

Estimated annual cost:

Electric: (1,800×£0.28)=£504 + (365×£0.55)=£200.75 ? £704.75

Gas: (7,000×£0.072)=£504 + (365×£0.32)=£116.80 ? £620.80

Total ˜ £1,325.55/year

If better deals appear after 6 months, leaving could cost ~£100 exit fees. In this case, a low-exit-fee fix can function as a practical “fix and fall”.

Scenario B: Family home, higher use, considering a tracker-style “fall”

Home: 3–4 bed house (smart meter), Direct Debit
Assumed annual use: 3,600 kWh electricity, 14,000 kWh gas
Option 1 (Fixed): 27p/kWh elec, 7.0p/kWh gas; same standing charges as above
Option 2 (Tracker-like): starts at 26p/kWh elec, 6.6p/kWh gas; can move monthly
Illustrated “fall”: after 4 months, unit rates drop by 10% for the remaining 8 months

Estimated impact of a 10% unit-rate fall (illustration only):

Electric units per month ˜ 3,600/12=300 kWh. Over 8 months: 2,400 kWh. 10% of 26p=2.6p saved per kWh ? 2,400×£0.026 ˜ £62.40

Gas units per month ˜ 14,000/12=1,166.7 kWh. Over 8 months: 9,333 kWh. 10% of 6.6p=0.66p saved per kWh ? 9,333×£0.0066 ˜ £61.60

Combined unit-rate saving ˜ £124 (standing charges unchanged)

This shows why the “fall” rules matter: if a product has high exit fees or the fall only applies as a small credit, the real benefit could be lower.

Assumptions: We’ve used simple annualised maths and example rates to demonstrate the moving parts. Real tariffs vary by distribution region, and standing charge changes can outweigh unit-rate changes for low users.

Fixed vs variable vs “fix and fall”: compare the trade-offs

Use this to decide what to shortlist before you request quotes. The right choice is usually the one that matches your risk tolerance and how likely you are to switch again.

Tariff type	Price can rise?	You benefit if prices fall?	Common catches	Best for
Fixed	Usually no (unit rates fixed)	Not unless you switch	Exit fees; high standing charges; fixed term	Budgeting, price certainty
Standard variable	Yes	Yes (but not guaranteed timing)	Less predictability; increases can be fast	Flexibility, short-term staying put
Tracker / index-linked	Yes (linked to an index)	Yes (linked to same index)	How the index is defined; update frequency; caps	People comfortable with price movement
“Fix and fall” style	Usually protected (like fixed), but read terms	Sometimes—depends on mechanism	Discretionary reviews; credit conditions; exit fees	Those wanting protection plus a clear drop pathway

Decision checklist: who “fix and fall” suits

You want protection against sharp rises, but don’t want to feel “stuck” if the market improves.
You’re happy to read the T&Cs to confirm how falls are applied (rate cut vs credit vs review).
You can tolerate the risk that the “fall” element is smaller than expected (e.g., standing charges don’t fall).
You’re likely to stay put long enough to receive any credits (if the product uses credits).

Who it may not suit

You want simple, predictable bills and don’t want to track reviews or indices.
You’re in a short tenancy or expect to move soon (exit fees can make leaving costly).
You’re on prepayment and options are limited; you may need to prioritise availability and eligibility.
Your usage is very low and standing charges dominate; “fall” in unit rates may not help much.

Costs, exclusions and common pitfalls (UK-specific)

Exit fees (per fuel)

Many fixed deals charge exit fees for electricity and gas separately. If you might re-fix soon, prioritise low/zero exit fee options.

Standing charges

A “fall” in unit rates won’t help as much if standing charges are high. Low users should compare total annual cost, not just p/kWh.

Payment method differences

Prices can differ for Direct Debit versus pay-on-receipt or prepay. Always compare using your actual payment method.

Meter eligibility

Some tariffs are restricted by meter type (e.g., Economy 7, smart-only time-of-use, or prepayment). Confirm eligibility before you apply.

Intro credits & conditions

If the “fall” comes as a credit, it may be paid later or only if you stay on supply. Check the trigger date and clawback rules.

Dual fuel isn’t always best

A combined supplier can be convenient, but the cheapest electricity and gas are not always from the same provider. Compare both ways.

Watch-outs when you read a tariff label: check unit rates (p/kWh), standing charges (p/day), contract length, exit fees, how/when prices can change, and whether discounts are time-limited.

FAQs

Are “fix and fall” tariffs guaranteed to get cheaper if the market drops?

Not necessarily. Some include a defined tracking rule; others only review prices at set points, and some offer credits with conditions. Treat “fix and fall” as a marketing label and confirm the mechanism in the tariff terms and the Tariff Information Label.

Do energy prices vary by postcode in the UK?

Yes. Unit rates and standing charges differ by electricity distribution region (and can also vary with gas distribution factors). That’s why comparisons ask for your postcode to show accurate rates.

Can I switch if I’m renting?

Usually, yes—if you pay the energy bills and your name is on the account. If energy is included in your rent, or you’re on a landlord supply arrangement, you may not be able to change supplier.

What happens if I have a prepayment meter?

Your choice of tariffs may be more limited, and some suppliers require a specific meter setup. It’s still worth comparing, but prioritise eligibility and whether you want to stay on prepay or move to credit (if possible).

Will a fixed tariff protect me from Ofgem price cap changes?

A fixed tariff typically keeps your unit rates steady for the fixed term, regardless of cap changes—unless the contract terms allow changes (uncommon, but always check). The Ofgem cap is most relevant to standard variable tariffs.

Is dual fuel always cheaper than separate suppliers?

Not always. Some suppliers price competitively for one fuel but not the other. Comparing electricity-only and gas-only options alongside dual fuel can help you avoid paying more for convenience.

How long does a UK energy switch take?

Switching timelines vary, but modern switching is designed to be quicker than it used to be. Your supply shouldn’t be interrupted. You’ll normally receive confirmation and a date for the switch; take meter readings when asked.

What should I check before committing to a “fix and fall” tariff?

Confirm: (1) exit fees and end date, (2) whether price drops apply automatically, (3) whether drops affect unit rates or only give credits, (4) standing charges, and (5) any meter or payment method restrictions.

Trust, methodology and sources

Editorial standards

Written by: EnergyPlus Editorial Team
Reviewed by: Energy Specialist
Last updated: March 2026

How we assess “best” fix and fall deals

Because “fix and fall” isn’t a single regulated product type, our approach is to assess each tariff on the criteria that affect real households:

Total estimated annual cost for your region and meter type (unit rates + standing charges).
Downside protection: how prices can rise during the term (if at all).
Downside costs: exit fees, credit clawbacks, eligibility conditions.
Upside capture: how (and how often) you benefit from lower prices (rate cut vs credit vs tracker).
Practical flexibility: ability to re-fix if the market improves (including low exit-fee options).

Limitations: We can’t guarantee tariff availability, acceptance, or that a “fall” will happen. Prices can change, and suppliers may withdraw products quickly. Always check supplier terms before switching.

Sources (UK)

Ofgem (energy regulator) – guidance on the retail market, price protections and consumer rights.
Citizens Advice: energy – practical help on bills, switching and complaints.
GOV.UK: energy – official support schemes and household energy information.

Ready to check today’s fix, variable and “fix and fall” options?

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Note: The secondary button is styled for consistency; it links back to the checklist so you can sanity-check exit fees, meter eligibility and standing charges before applying.

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Updated on 14 Mar 2026