How to Appoint and Use an Authorised Representative for Your Business Documents

If you run a business in New Zealand, there will be times when someone other than the owner or director needs to sign, file, lodge or deal with paperwork on the business’s behalf. That sounds simple, but this is where founders often get caught. Common mistakes include letting a staff member sign without written authority, using a vague authority letter that does not match the document being signed, or assuming a title like “manager” automatically gives legal power to bind the business.

The problem is not just administrative. A signature made by the wrong person can delay a deal, trigger disputes with suppliers, create problems with regulators, or leave you arguing about whether a contract is enforceable. That can become expensive very quickly, especially before you sign a contract, before you spend money on setup, or when you are trying to move fast.

This guide explains how to appoint and use an authorised representative for your business documents in New Zealand, when you need one, what authority should cover, and the practical mistakes to avoid.

Overview

An authorised representative is a person your business gives permission to act for it in a defined way. The key legal question is not the job title, it is whether the person has actual authority, apparent authority, or both, and whether that authority is clear enough for the document or transaction involved.

For most businesses, the safest approach is to record authority in writing and match it to the specific documents, registrations, contracts or operational tasks involved. That matters whether you are setting up a company, selling online, managing customer contracts, dealing with privacy matters, or signing supplier terms.

• Confirm who legally has power to appoint the representative, such as the sole trader, partners, trustees or company directors.
• Define exactly what the representative can do, including signing contracts, filing forms, dealing with regulators, accessing accounts or handling customer documentation.
• Set limits on the authority, including dollar caps, time limits, approval requirements and excluded actions.
• Use a written appointment that matches your business structure and the documents being dealt with.
• Tell relevant third parties who is authorised, and keep internal records up to date.
• Review related contracts, privacy processes, platform terms and trade mark or registration records so the authority works in practice.

What To Know Before You Start

For a New Zealand business, appointing an authorised representative means giving someone clear legal authority to handle specific business documents or transactions on your behalf.

That authority can be broad or narrow. It might allow a person to sign a one-off supplier agreement, submit Companies Office filings, deal with a software platform account, negotiate a commercial lease, or respond to compliance paperwork. The right approach depends on your business structure, your internal approval process and the risk level of the document involved.

What is an authorised representative?

An authorised representative is someone your business permits to act for it. In practice, that could be:

• a director
• a founder
• a general manager
• an office manager or operations lead
• an external adviser handling a filing or registration
• a person appointed for a specific transaction

Not every representative has the same legal standing. A company director usually has stronger assumed authority than an administrator. A contractor may have no authority at all unless it is clearly given. This is why written authority matters.

Actual authority and apparent authority

The law often distinguishes between actual authority and apparent authority.

Actual authority is authority the business has genuinely given to the person, whether expressly in writing or implied from their role and responsibilities. If your board approves a manager to sign customer contracts up to a set value, that manager has actual authority within those limits.

Apparent authority is different. This arises when the business presents someone in a way that makes a third party reasonably believe they have authority. For example, if you put someone forward as your commercial lead, copy them into negotiations and let them send out final terms, the other side may assume they can bind the business even if your internal rules say otherwise.

The main risk is the gap between what your business intended and what outsiders were led to believe. This is where founders often get caught.

Why this matters in day to day business

Using an authorised representative is common across software, IT and ecommerce businesses. A founder may need someone else to handle contracts while they focus on growth. An operations manager may need authority to accept platform terms. A finance lead may need authority to sign payment service documents. An employee may need authority to deal with customer records, privacy requests or logistics providers.

Authority also intersects with broader business legal requirements. If you want to start a business in New Zealand or scale one properly, documents do not sit in isolation. Authority should line up with your:

• business structure, such as sole trader, company, partnership or trust
• company registration and Companies Office records
• governance documents, including constitutions or shareholder arrangements
• customer terms and supplier agreements
• privacy processes under the Privacy Act 2020
• marketing practices under the Fair Trading Act 1986
• online sales terms, website terms and payment platform rules
• trade mark ownership and intellectual property processes

If the person acting for the business is not properly authorised, the problem can spread beyond one signature.

Who can appoint the representative?

The person or body with power to appoint depends on the business structure.

• For a sole trader, the owner can usually appoint someone to act on the business’s behalf.
• For a company, the board or a person already holding proper delegated authority usually makes the appointment.
• For a partnership, the partnership agreement should be checked first, because one partner may not always have unlimited authority for every action.
• For a trust-run business, the trustees and trust deed need to be reviewed to confirm who can authorise action.

Before you print a letter of authority or ask someone to sign, make sure the appointing person has the legal power to do so.

When This Issue Comes Up

This issue usually comes up when a business needs speed, delegation or continuity, but has not yet documented who can act and on what terms.

Many founders do not think about authorised representatives until a bank, supplier, regulator, landlord or software platform asks for proof of authority. At that point, delays can hold up setup, onboarding or revenue.

Common founder moments

You may need an authorised representative in situations such as:

• before you sign a contract with a supplier, reseller, developer or customer
• before you lodge forms or updates through the Companies Office
• before you appoint someone to handle trade mark or registration processes
• before you launch online and someone else is accepting payment gateway or platform terms
• before you outsource operations, fulfilment or customer support
• before you negotiate a commercial lease or fit-out arrangements
• before a team member handles privacy requests or access to customer data
• before a sales lead agrees to discounts, service levels or bespoke contract terms

Internal delegation during growth

Growth creates pressure to delegate. A founder who once approved every document may no longer have time to review every customer contract, software subscription, hardware order or marketplace account.

That does not mean authority should be handed over casually. The better approach is to decide what can be delegated, to whom, and with what limits. This is especially important in ecommerce and tech businesses where staff may accept terms online with a single click.

External representatives and advisers

Some businesses appoint an external representative for a narrow purpose. That might be an adviser lodging a form, a consultant negotiating procurement paperwork, or an agent dealing with a regulator or service provider.

In those cases, the authority should be tightly drafted. A third party may assume broader authority than you intended if the appointment is too open-ended.

Business setup and registration stages

Authority questions often appear early, especially when people are trying to start a business in New Zealand quickly. If you are choosing a business structure, completing registration steps, reserving a business name, setting up ownership records or preparing shareholder arrangements, you may ask someone else to file or coordinate documents.

Even at this stage, it helps to be clear about who is authorised to speak for the business, who can sign pre-incorporation or startup documents, and when formal approval is needed.

Practical Steps And Common Mistakes

The safest way to use an authorised representative is to give written authority that is specific, internally approved and consistent with how the business actually operates.

A short email saying “they can handle it” may not be enough. The higher the risk of the document, the more carefully the appointment should be prepared.

1. Identify the documents and decisions involved

Start with the practical question: what exactly does the representative need to do?

Different tasks call for different authority. For example:

• signing standard customer terms is different from agreeing bespoke enterprise contracts
• filing routine company updates is different from changing shareholding or governance records
• responding to a privacy request is different from approving a new data sharing arrangement
• placing orders is different from committing to a long term supply agreement

Define the task first, then draft the authority around it.

2. Check your business structure and internal rules

Authority has to fit your legal structure. A company should check its constitution, shareholder arrangements, board processes and any existing delegations. A partnership should check the partnership agreement. A trust-run business should review the trust deed and trustee decision-making rules.

If your internal documents require board approval or joint signatures, an authority letter that ignores those rules may create more problems than it solves.

3. Put the appointment in writing

A written appointment is usually the most practical way to avoid disputes. The document might be called a letter of authority, board resolution, delegation instrument, or authorised signatory record, depending on the context.

The wording should clearly include:

• the legal name of the business
• the name and role of the authorised representative
• the date the authority starts, and if relevant, when it ends
• the exact acts the person is allowed to do
• any financial limits or approval thresholds
• any excluded actions, such as entering finance arrangements or varying key contracts
• who approved the appointment
• how the authority can be revoked

If the representative will be signing documents, say so expressly. If they can only negotiate but not sign, say that too.

4. Match the authority to the real risk

Not all documents carry the same risk. A simple authority may be enough for routine operational paperwork. A more formal process may be needed for:

• major customer or supplier contracts
• deeds, guarantees or finance documents
• changes to ownership or governance
• commercial leases
• documents affecting intellectual property, including trade mark ownership or licensing
• agreements involving customer data, offshore service providers or sensitive privacy obligations

Before you sign, think about what could go wrong if the representative exceeds their authority. That usually shows how detailed the appointment should be.

5. Notify the right third parties

An internal appointment may not be enough on its own. Some counterparties will want evidence that the person is authorised. Banks, landlords, major suppliers, government bodies and software platforms often have their own requirements.

You may need to provide:

• a signed authority letter
• a board resolution
• specimen signatures
• proof of the representative’s role
• updated account permissions or platform administrator settings

Make sure what you tell third parties matches your internal limits. If you give someone broad outward authority, it may be hard to argue later that they had narrow powers only.

6. Keep contracts and policies aligned

An authority document does not sit alone. Your contracts and policies should support it.

For example, if a sales manager can sign standard customer contracts, your contract process should clearly distinguish between standard terms and non-standard changes. If a privacy officer can answer customer data requests, your privacy policy and internal process should reflect who handles those requests and who approves exceptional disclosures.

For ecommerce and software businesses, alignment is especially important across:

• website terms
• subscription terms
• supplier agreements
• SaaS contracts
• privacy collection notices
• marketing approvals
• refund and service policies

If those documents are inconsistent, delegation becomes messy very quickly.

7. Revoke and update authority properly

Authority should not last forever by accident. Staff leave, roles change, and businesses restructure. A former manager with lingering account access or apparent authority can create serious problems.

When authority ends, take practical steps straight away:

• revoke the appointment in writing
• update internal registers and approval matrices
• remove account access and platform permissions
• notify key counterparties where needed
• collect unused templates, letterhead or signing credentials

Common mistakes businesses make

The most common mistakes are not legal theory problems. They are everyday operational errors.

• Assuming a job title automatically gives signing authority.
• Using a generic authority letter that does not match the business structure or document type.
• Failing to set dollar limits, time limits or approval conditions.
• Letting staff click-accept online terms without checking who can bind the business.
• Not revoking authority when someone changes roles or leaves.
• Allowing conduct that creates apparent authority wider than intended.
• Ignoring related issues such as privacy access, customer promises, intellectual property rights or trade mark ownership.

Most of these mistakes are fixable if you catch them early. They are much harder to unwind after a dispute or failed transaction.

FAQs

Does an authorised representative always need to be a director?

No. A business can authorise other people to act for it, such as managers or external agents. The key issue is whether the person has been validly appointed and whether their authority is clear enough for the task.

Can an employee sign contracts for the business without written authority?

Sometimes they may appear to have authority because of their role or the way the business presents them, but relying on that is risky. Written authority is the safer approach, especially for important contracts or anything outside routine operations.

What should be included in an authority letter?

It should identify the business and representative, state what the person can do, set any limits, record who approved it, and say when the authority starts and ends. If the person can sign, negotiate, file forms or access accounts, those permissions should be spelled out.

Can I appoint an external adviser as my authorised representative?

Yes, for a defined purpose. Keep the scope narrow and make sure the appointment does not accidentally let the adviser make wider commitments for the business than you intended.

What happens if the wrong person signs a business document?

The document may still create arguments about enforceability, delay the transaction, or expose the business to a dispute about authority. The outcome depends on the facts, including what authority was actually given and what the other party reasonably believed.

Key Takeaways

• An authorised representative is someone your business gives permission to act for it in a defined way.
• The safest approach is to record authority in writing and tailor it to the specific documents, transactions and limits involved.
• Your business structure, governance documents and internal approval rules determine who can appoint a representative.
• Authority should line up with contracts, privacy processes, online selling arrangements, registration records and intellectual property documents.
• Apparent authority can bind a business even where internal limits were not followed, so outward communications matter.
• Review and revoke authority as roles change, especially where staff have signing power or platform access.

If your business is dealing with how to appoint and use an authorised representative for your business documents and wants help with authority letters, contract signing processes, privacy responsibilities, trade mark and registration documents, you can reach us on 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.