Can You Change Prices Mid-Contract in Australia?

Rising supplier costs, new award wages, software fees and inflation can make an existing customer contract feel commercially unworkable. The tricky part is that a customer who agreed to one price may not accept a higher one just because your costs have changed.

Common mistakes include sending a price increase email without checking the contract, relying on a vague clause that does not say how the price can change, or assuming a customer has accepted new fees because they kept using the service for a few days. Those mistakes can create disputes, unpaid invoices and Australian Consumer Law issues.

The answer depends on the wording of your agreement, how much notice you give, whether the customer can reject or terminate, and whether the term is fair for the type of customer you deal with.

Pricing Change Checklist for Existing Contracts

A business can usually change prices mid-contract only if the contract allows it, the customer agrees, or the change is handled as a proper contract variation.

For ongoing service providers, this issue often appears at renewal time, after a supplier raises costs, or when a client has been on a legacy rate for years. Before you send a notice of price increase under your customer contract, the starting point is to separate commercial pressure from legal entitlement. A price increase may be sensible, but it still needs a contractual path.

Use this checklist before changing service fees under a contract:

• Identify the contract type: Is it a fixed term agreement, month-to-month subscription, rolling service arrangement, statement of work, quote, proposal or set of online terms of trade?
• Find the pricing clause: Does it set a fixed price, hourly rate, subscription fee, usage fee or pass-through cost?
• Look for a price variation clause: Does it expressly allow increases, and does it say when and how they can happen?
• Check the notice rules: The contract may require notice by email, a portal notification, a minimum notice period, or notice before the next billing cycle.
• Check termination rights: The customer may have a right to cancel if they do not accept the new price.
• Check customer type: Consumer and small business standard form contracts can raise unfair contract terms issues under the Australian Consumer Law or the ASIC Act.
• Check renewal dates: It may be easier and safer to apply new pricing at renewal rather than during a committed term.
• Check invoicing practices: Your invoice should match the contract and any valid variation, not simply display a new price with no prior agreement.

A fixed term contract with a fixed monthly fee is usually harder to change than a rolling subscription that allows fee changes on 30 days notice. A bespoke enterprise service agreement may require a signed variation, while online terms may allow changes if the customer is notified and can cancel before the new fee applies.

The key question is not just whether a price increase clause exists. The real question is whether the clause is clear enough, used in the way the contract requires, and fair in the context of the arrangement.

When a Price Variation Clause Lets You Raise Fees

A price variation clause works best when it clearly states what can change, when it can change, how the customer will be told and what the customer can do if they do not agree.

In Australia, contracts are generally interpreted according to their wording, context and commercial purpose. If your contract says the fee is $2,000 per month for 12 months and says nothing about price changes, you usually cannot unilaterally raise the monthly fee during that 12-month term. You can ask the customer to agree, but you cannot simply impose the increase.

A stronger price increase clause in a contract in Australia will usually deal with several points:

• Scope: whether the clause applies to all fees, only subscription fees, only third party pass-through costs, or only additional services.
• Timing: whether increases can occur at renewal, annually, after a minimum term, or at any time with notice.
• Method: whether the increase is linked to CPI, supplier cost changes, wage increases, usage levels, exchange rates or a published price list.
• Notice: how much notice must be given before the new price applies.
• Customer choice: whether the customer can terminate, reject the increase, reduce the service level or negotiate.
• Limits: whether there is a cap, frequency limit or requirement that the increase be reasonable.

For example, a clause that says we may change our fees at any time is commercially convenient, but it can be risky. It does not explain how the change will happen, whether notice is required, or whether the customer can leave. It may also look one-sided in a standard form contract.

A clearer contract price variation clause might say that subscription fees may be increased once per year after the initial term, that customers will receive at least 30 days written notice, and that the customer may cancel before the increase takes effect if they do not accept the new fees. The right notice period will depend on the contract and industry practice, rather than a single rule that applies to every business.

Some businesses also use cost pass-through clauses. These can be useful where you resell software licences, use third party platforms, rely on freight providers or provide labour-intensive services. A pass-through clause might allow you to increase a component of the fee if a named supplier increases its charges. This is different from a general fee increase. It should identify the relevant costs and explain how the increase will be calculated.

Another option is indexation. A contract may state that fees increase annually by CPI or another agreed measure. This can reduce friction because the mechanism is known upfront. However, if you use indexation, define the timing and data source carefully so both parties can calculate the increase without argument.

Variable usage pricing is also common in SaaS, logistics, marketing, telecommunications and professional services. If fees are based on number of users, transactions, hours, campaigns, seats, deliveries or locations, the contract should distinguish between a genuine usage-based fee and a change to the underlying price. Adding 20 users may increase the invoice under the existing pricing model. Raising the per-user rate is a different legal question.

The safest clauses are specific without being overly rigid. They give your business room to respond to real cost changes, while giving customers enough certainty to budget and decide whether to continue.

Notice of Price Increase and Customer Consent

A notice of price increase should be given in the way the contract requires and early enough for the customer to make a real decision before the new price applies.

Many disputes start because the business treats notice as a formality. A short email saying our prices are changing next week may not be enough if the contract requires 30 days written notice, notice to a nominated representative, or notice before the next renewal period. If your service agreement has a notices clause, follow it closely.

A good price increase notice for an ongoing service relationship usually includes:

• the current price and the new price
• the date the new price starts
• which services, users, plans or locations are affected
• the reason for the increase, explained in plain English
• the contract clause you are relying on, if appropriate
• what the customer can do if they do not agree
• the deadline for cancelling, changing plan or raising questions
• who to contact about billing or contract options

Consent matters where the contract does not already permit the change. If there is no valid price variation clause, you usually need the customer to agree to a variation. That agreement can be signed, confirmed by email, accepted through an online account, or sometimes inferred from conduct. However, relying on conduct can be risky, especially if the customer later says they did not understand the change or had no real opportunity to reject it.

A formal variation is often best for higher-value B2B arrangements. For example, if you provide managed IT services to a customer for a fixed 24-month term, and your costs rise halfway through, you might propose a signed deed of variation that sets out the new monthly fee, when it starts, any changes to scope, and whether the original term still applies. That keeps the paper trail clean.

For lower-value recurring services, a well drafted online process can work. The customer might receive an email and in-app notice, then be told that the new plan price will apply from the next billing cycle unless they cancel before that date. This approach depends on the original terms allowing that process and on the notice being clear.

Avoid making the new price retrospective unless the contract clearly allows it and the customer has agreed. Backdating fee increases can cause serious trust issues and may be difficult to enforce. A customer should not receive an invoice today for a higher price that supposedly applied last month if they were never told.

Silence is not always acceptance. A customer continuing to use your service after receiving a properly delivered notice may support acceptance in some circumstances, particularly if the contract says continued use after the effective date means acceptance. However, that wording still needs to be fair, clear and prominent. It is much stronger if the customer had a genuine ability to cancel before the increase took effect.

Keep records. Save copies of notices, email delivery logs, portal notifications, signed variations, customer acknowledgements and billing records. If the customer later disputes the increase, your evidence should show exactly what they were told and when.

Unfair Contract Terms and Customer Expectations

A price change right can be unenforceable or expose a business to penalties if it is an unfair term in a consumer or small business standard form contract.

The unfair contract terms regime is a major reason to be careful with price increase clauses in Australia. Under the Australian Consumer Law, unfair terms in standard form consumer and small business contracts can be void, and penalties can apply for proposing, using or relying on unfair terms. Similar protections apply to certain financial products and services under the ASIC Act.

A term may raise concerns if it lets one party change an important part of the deal, such as price, without giving the other party a meaningful right to terminate or respond. The risk is higher where the customer had little or no opportunity to negotiate the terms, the clause is buried in fine print, or the business can increase fees for any reason and at any time.

That does not mean every price increase clause is unfair. Many ongoing service businesses need the ability to adjust pricing. The question is whether the clause creates a significant imbalance, is reasonably necessary to protect your legitimate interests, and would cause detriment if relied on. Transparency also matters. Clear, prominent wording is much safer than broad hidden wording.

For a standard form contract, these features usually make a price variation clause more balanced:

• the clause explains the types of fees that may change
• price changes are limited to specific times, such as renewal or after a notice period
• the customer gets advance notice before the increase applies
• the customer can terminate without an unreasonable exit fee if they reject the increase
• the clause is not hidden in an unexpected part of the terms
• the business cannot change the price after the customer is locked in without a practical option to leave
• the increase is linked to a legitimate reason, such as third party costs, wage costs, usage or annual review

Customer expectations also matter even where the unfair terms regime does not apply. If your sales page says a customer is getting a fixed annual package, they may reasonably expect the price to be fixed for that period. If your proposal says rates are valid for the initial project only, they may expect future work to be quoted separately. Misalignment between marketing, sales conversations and contract wording can create disputes.

The Australian Consumer Law also prohibits misleading or deceptive conduct. If you advertise fixed monthly pricing but reserve an unlimited right to increase that monthly price during the fixed period, that could create a problem. The same risk can arise if your sales team tells customers there will be no increases, while your terms say the opposite.

For businesses dealing with consumers, subscription and membership pricing needs extra care. A gym, online course platform, software subscription or maintenance service may have many customers who do not read every term. Clear upfront disclosure, reminder notices and easy cancellation pathways can reduce complaints and regulator attention.

For B2B services, commercial fairness still matters. A small business client may have budgeted for a year of marketing support, bookkeeping software, equipment maintenance or outsourced admin. A sudden mid-term increase can damage the relationship even if the legal wording is arguable. Where possible, give more notice than the minimum, offer phased increases, or apply changes at renewal.

Franchising and regulated industries can have extra rules. If your pricing changes affect franchise fees, membership charges, utilities, childcare, healthcare, financial services or other regulated arrangements, you may need to check industry-specific requirements as well as the contract wording.

A practical way to reduce risk is to align your pricing structure with the customer journey. At sign-up, tell customers what is fixed, what can vary and when reviews happen. During the relationship, give clear notice. At renewal, make the new price easy to see. After the change, make invoices match the notice.

FAQs

Can You Increase Prices During a Fixed Term Contract?

Only if the contract allows it or the customer agrees. A fixed term contract with a fixed price usually cannot be changed unilaterally. If the contract has a clear price variation clause, follow the timing, notice and process set out in that clause.

How Much Notice of a Price Increase Should a Business Give?

The contract may set the minimum notice period. If it does not, give enough notice for the customer to understand the change and decide whether to continue. For recurring services, notice before the next billing cycle or renewal is usually more defensible than notice after an invoice has been issued.

Can a Customer Refuse to Pay the Increased Fee?

A customer may be able to refuse if the increase was not permitted by the contract, was not properly notified, or relies on an unfair term. If the increase was validly made under a clear clause, the customer may need to pay the increased fee or use any termination rights available to them.

Is Continued Use of a Service Acceptance of New Pricing?

Sometimes, but it depends on the contract and the facts. Continued use is more likely to support acceptance where the customer received clear advance notice, the terms say continued use means acceptance, and the customer had a real chance to cancel before the increase applied.

Should Price Increases Be Put in a Signed Variation?

For bespoke, higher-value or fixed term contracts, a signed variation is often the cleanest option. For standard subscriptions, a notice process may work if the original terms clearly allow it and the process is fair and transparent.

Key Takeaways

• You can usually change prices mid-contract only if the contract permits it, the customer agrees, or the change is made through a valid contract variation.
• A strong price variation clause should cover timing, scope, notice, calculation method and the customer's options if they do not accept the increase.
• A notice of price increase should be clear, timely and delivered in the way the contract requires.
• Consumer and small business standard form contracts need careful drafting because unfair contract terms laws can affect broad unilateral price change rights.
• Customer expectations matter. Marketing claims, sales promises and invoices should match the pricing rights in your contract.
• For ongoing services, applying increases at renewal or after clear advance notice is usually safer than surprising customers mid-term.

If you are planning to raise fees for existing customers, Sprintlaw can help review your service agreement, draft a fair price variation clause, prepare a customer notice process and update your standard terms. You can reach our team on 1800 730 617 or at team@sprintlaw.com.au for a free, no-obligations chat.