Manage Mercury

How to cancel mercury in new zealand and protect your rights

Understanding mercury and why you might want to cancel

Mercury is a major New Zealand energy and telecommunications provider that supplies electricity, gas (including LPG through Elgas), broadband and mobile services to customers across the country. You may have joined Mercury for their competitive rates, bundled offers or customer service, but circumstances change - and when they do, you deserve a straightforward cancellation process.

Whether you're switching to a cheaper provider, moving house, or consolidating services, cancelling Mercury shouldn't feel complicated or deliberately slow. At Stopee, we've helped thousands of consumers navigate cancellations like this one, and we know the common pitfalls. This guide walks you through exactly what to expect, how to cancel properly, and how to claim any refunds you're owed under New Zealand consumer law.

What mercury services you might have

Mercury offers a range of services, and you may hold one or more of them. Common services include electricity plans (both open-term and fixed-term contracts), LPG cylinder supply through their partnership with Elgas, broadband packages and mobile plans. Many customers bundle these services together for convenience, which can complicate cancellation if you only want to end one service.

Mercury also provides online account management for most customers, though you cannot cancel through their website or app - you must contact them directly. Understanding which services you hold before you start cancelling will save you time and reduce the risk of accidental ongoing charges.

When to consider cancelling mercury

You might want to cancel if a competitor offers better rates, if you're moving house and want to switch providers, if you're unhappy with customer service, or if you've locked yourself into a fixed-term contract at above-market rates. Early termination fees may apply if you're within a contract period, but Stopee recommends calculating whether the fee is less than the savings you'll make with a new provider - sometimes it's worth paying to leave.

Your consumer rights when cancelling energy and telecom services

As a New Zealand consumer, you're protected by the Consumer Guarantees Act 1993 and the Fair Trading Act 1986, which give you strong rights even when cancelling.

Consumer guarantees act protections

The Consumer Guarantees Act requires that services (including energy supply and broadband) be provided with due care and skill, be fit for purpose, and be delivered within a reasonable timeframe. If Mercury has failed to meet these standards, you may have grounds to cancel without penalty and claim compensation - even if you're in a fixed-term contract.

For example, if Mercury's service has been unreliable, if you were misled about pricing or terms when you signed up, or if they've breached their own Consumer Care policy, the Act gives you leverage. Stopee recommends documenting any service failures and complaints in writing before you cancel, as this creates a record that strengthens your position if Mercury challenges an early termination fee.

Cooling-off rights for bundled services

If you signed up for a bundled mobile or broadband service with Mercury, you may have a 14-day cooling-off period from the date you entered the contract. If you're within this window, you can cancel without penalty. For electricity and gas services, cooling-off rights do not normally apply once supply has begun, but for other services they do.

Check your contract documents to confirm the start date and any cooling-off period. If Mercury cannot clearly show you received their terms in writing before you agreed, that's another negotiating point in your favour.

How to cancel mercury step by step

Mercury does not allow you to cancel online or through their mobile app, so you must contact them directly by phone or through their official support channels.

Step-by-step cancellation process

1. Contact Mercury directly by phone or through their official support channels. Visit their cancellation support page at ask.mercury.co.nz and request to speak with a cancellations adviser.
   • Have your account number, service address and a form of ID ready before you call.
   • Remain calm and polite - the adviser is not the reason you're frustrated, but they can speed up the process if you work with them.
2. Tell the adviser clearly that you want to cancel all Mercury services (or specify which ones if you're keeping some). Confirm the effective cancellation date.
   • Pro tip: Ask them to email you a written cancellation confirmation immediately after the call, including the cancellation date, which services are affected, and the expected final bill date.
   • Note the adviser's name and the reference number for your cancellation request.
3. Arrange a final meter reading. Mercury will ask you to provide an actual reading rather than letting them estimate it.
   • For electricity and gas, read your meter yourself and photograph it as proof.
   • Provide this reading to Mercury in writing (by email) as well as by phone - this protects you if there's a dispute over the final bill amount.
   • Warning: If you provide an estimated reading instead of an actual one, your final bill may be incorrect, and you'll have to request a recalculation later, which delays any refund.
4. If you use LPG (Elgas cylinders), inform Mercury and arrange cylinder removal directly with Elgas. They will need to collect any leased or supplied cylinders.
   • Do not dispose of cylinders yourself - they must be handled by the supplier.
   • Get written confirmation from Elgas that cylinders have been collected, as this protects you from phantom charges.
5. Register your new provider within two weeks of your cancellation date. Failure to do this risks a gap in supply or disconnection.
   • Your new provider will lodge the change with Meridian (the network operator), which triggers the handover from Mercury.
   • Stopee recommends providing your new provider with the same meter reading you gave to Mercury to ensure consistency.
6. If you're within a fixed-term contract, ask Mercury in writing about early termination fees. Some contracts have break clauses, and Stopee has seen instances where fees are waived if you cite service failures or unfair terms.
   • Request a written breakdown of any fees before you agree to them.
   • If the fee seems excessive, contact the Energy Complaints Commissioner (free service) to ask whether it breaches the Consumer Guarantees Act.

Timeline and what to expect

Mercury typically processes cancellations within 5 to 10 working days. Your supply will not be cut off until your new provider officially takes over - which usually happens within 2 to 4 weeks after registration. During this transition, ensure you're not paying two providers simultaneously by coordinating the cancellation date with your new provider's start date.

What happens after you cancel mercury

Cancelling energy and telecom services isn't the end of the interaction - you still need to monitor your final bill and refund, and make sure no rogue charges appear.

Your final bill and meter reading

Mercury will send you a final bill within 2 to 4 weeks of your cancellation date. This bill should reflect all charges up to your cancellation date and include the final meter reading you provided (or an estimated reading if you didn't supply one).

Check the final bill carefully against your meter reading. If the bill is based on an estimate and you provided an actual reading, contact Mercury immediately and ask them to recalculate. An accurate final bill reduces disputes and speeds up any refund you're owed.

Service handover and equipment returns

Once your new provider takes over, Mercury's responsibility ends. However, you must return any rented equipment - such as broadband modems or mobile equipment - to Mercury within the timeframe they specify. Failure to return equipment may result in charges for lost items.

For electricity and gas, no equipment removal is needed. For LPG, Elgas handles cylinder collection as part of the cancellation process (see step 4 above).

Stopee recommends taking photos of any equipment you return and keeping the return receipt or tracking number as proof you've fulfilled this obligation.

Refunds from mercury and how to claim them

If your Mercury account is in credit after the final bill is calculated, you're entitled to a refund under the Consumer Guarantees Act and Mercury's own refund policy.

Mercury's refund policy

Mercury processes refunds three times per week. Refunds typically arrive within 2 to 3 working days after they're processed. If your account is in credit, Mercury will refund the remaining funds automatically once the final bill is prepared - you don't have to ask (though Stopee recommends confirming this in your cancellation email).

SmoothPay customers may see a slightly longer refund timeframe because account reconciliation takes longer for payment plan customers. Once your account is fully reconciled, any credit is refunded to your original payment method.

Refund fees and exceptions

Mercury offers two free refunds per year. After that, additional refunds incur a NZD 7.50 processing fee each. This fee applies even if the refund is Mercury's responsibility (not your second refund request).

Warning: Mercury does not process refunds between 24 December and 5 January each year (the Christmas pause). The final cutoff for refund requests in this period is 8:45 am on 24 December. If you cancel close to Christmas, your refund may be delayed until after 5 January.

If your final bill was based on an estimated meter reading and you later provide an actual reading, Mercury will recalculate the final bill and may increase your refund. Always submit an actual meter reading as soon as possible after cancellation to maximise your refund.

How to request a refund if mercury doesn't issue one automatically

Contact Mercury through their official support channels and request a refund of your account credit. Provide your account number, the final bill date and the amount you believe you're owed. Mercury should respond within 5 working days with confirmation that the refund has been processed.

If Mercury refuses to refund you or claims you don't have a credit, ask them to send you a detailed statement showing all charges and payments up to your cancellation date. Use this statement to dispute their refusal. Stopee has helped many consumers challenge unfounded refund denials, and most are resolved once documentation is reviewed.

Mercury pricing and plan examples

Understanding Mercury's pricing helps you benchmark whether cancellation makes financial sense, especially if you're considering early termination fees.

Common mercury plans and rates

Prices shown are indicative and include GST. Mercury's rates change periodically and vary by location. Before cancelling, obtain a written quote from your new provider to confirm the savings justify any early termination fees.

Common mistakes when cancelling mercury

Cancelling energy and telecom services can feel stressful, especially if you're frustrated with your current provider - but rushing the process often costs you money.

Mistake 1: not providing an actual meter reading

The most expensive error is letting Mercury estimate your final meter reading. Estimated readings often overcharge you because they're based on your historical usage, not your actual consumption in the final billing period. Always photograph your meter and send the reading to Mercury in writing. If the final bill reflects an estimate, request an immediate recalculation once you provide the actual reading.

Mistake 2: cancelling before registering with a new provider

If you cancel Mercury without having a new provider ready, you risk a gap in supply. Electricity and broadband can't be left unregistered for long - you need continuous supply. Stopee recommends confirming your new provider's start date before you give Mercury a cancellation date.

Mistake 3: not asking about early termination fees in writing

Always request a written breakdown of any early termination fees before you agree to them. Verbal quotes can be disputed later. If the fee is large, ask Mercury to justify it under the Consumer Guarantees Act - some fees are unenforceable if they're not a genuine pre-estimate of loss but are instead a penalty.

Mistake 4: forgetting to return rented equipment

If you have a rented modem, router or other equipment, Mercury will charge you for it if you don't return it. Get clear instructions on where and how to return equipment, and keep proof of return (receipt, tracking number or email confirmation).

Mistake 5: not keeping cancellation records

Always request written confirmation of your cancellation, including the effective date, reference number and which services are affected. This protects you if Mercury later claims you didn't cancel or charges you beyond the cancellation date. Stopee recommends taking screenshots of online support conversations and keeping all emails from Mercury.

After cancellation: what to monitor

Cancellation doesn't end when Mercury stops supplying you - you need to stay vigilant for a few weeks to catch any billing errors or phantom charges.

Monitoring your final bill

Review your final bill line by line. Check that charges stop on the cancellation date, that no post-cancellation usage has been added, and that the meter reading matches what you submitted. If anything looks wrong, contact Mercury within 10 days and ask for a corrected bill.

Keep records of your final bill, the meter reading you submitted and any correspondence about the cancellation for at least 12 months. If a dispute arises later, these records will be your evidence.

Confirming your new provider's supply

Once your new provider takes over, check that you're receiving supply and that your account with them reflects the correct meter readings. If there's a gap in supply or a meter reading mismatch, contact your new provider immediately.

Checking for phantom charges

Some consumers discover unwanted charges weeks after cancelling because they didn't fully disconnect all services. For example, if you only cancelled electricity but left broadband active, broadband charges will continue. Review your bank statement 4 to 6 weeks after the final bill to confirm no new charges from Mercury have appeared.

How stopee can help you cancel and claim refunds

Cancelling Mercury involves multiple steps, deadlines and potential financial claims - and it's easy to leave money on the table if you don't know what you're entitled to. Stopee specialises in helping New Zealand consumers navigate cancellations of energy, telecom and subscription services.

At Stopee, we've helped thousands of consumers cancel Mercury and other providers, recover refunds they didn't know they were owed and challenge unfair early termination fees. Our guides cover every angle of the cancellation process so you can move to a cheaper provider or better service with confidence.

Whether you need step-by-step guidance, help drafting a formal complaint to Mercury, or advice on whether a fee is legally enforceable, Stopee's resources are free and built by consumer advocates who understand New Zealand law. Visit Stopee today to explore guides, templates and comparison tools for energy and telecom cancellations - because you deserve clarity and control when you cancel.

Mercury contact details and mailing addresses

To cancel Mercury, contact them directly using the channels below.

Phone support and online channels

Mercury's primary support channel is their online support portal at ask.mercury.co.nz. You can submit a cancellation request through this portal or call their customer service team. For the most current phone number, visit Mercury's website, as numbers may change.

Keep in mind that wait times can be long during peak periods (early morning or late afternoon). Stopee recommends calling during mid-morning or early afternoon for shorter waits.

Official mailing addresses for cancellation correspondence

If you prefer to send written cancellation notice by post, Mercury has provided the following postal addresses for correspondence:

• Primary mailing address (Auckland): Mercury Energy Limited, PO Box 72016, Ohneroa, Auckland 2146, New Zealand
• Alternative address (Tauranga): Mercury Energy Limited, Private Bag 12024, Tauranga, New Zealand

Pro tip: If you send cancellation notice by post, use registered mail or a courier service that provides tracking. This creates proof that Mercury received your cancellation request on a specific date, which is crucial if they later dispute when you cancelled.

Always include your account number, service address, full name and a clear statement that you wish to cancel all Mercury services (or specify which ones). Ask for written confirmation of cancellation within 5 working days.

Stopee recommends also contacting Mercury by phone or their online support portal in parallel with any postal notice, to ensure they process your request promptly. Combining written and direct contact reduces the risk of your cancellation being lost or delayed.