What is an authorization letter?

An authorization letter is a written note by which one person or business permits another person to act on their behalf for a specific, limited purpose, such as collecting a document, receiving a delivery, or dealing with an office on their behalf. It is simpler and lighter than a power of attorney, and is often used for one-off or short tasks. The letter names who is authorised, states exactly what they may do, and is signed by the person granting the authority.

When does a business use an authorization letter?

A business uses an authorization letter whenever an owner or manager wants an employee or a representative to handle a defined task in their place. Common examples include authorising a staff member to collect a cheque or a parcel, to submit or collect documents at a government office, to operate a specific process with a vendor, or to represent the business at a meeting. It gives the third party written proof that the person in front of them is genuinely authorised to act.

What is the difference between an authorization letter and a power of attorney?

An authorization letter is a simple written permission for a specific, usually short-term task, and often needs no stamp paper or registration. A power of attorney is a more formal legal document that can grant broad or long-lasting authority, is usually executed on stamp paper, and may need notarisation or registration. As a rule, use an authorization letter for a small defined task and a power of attorney where the authority is wide, ongoing, or involves property or significant transactions.

Does an authorization letter need to be on letterhead?

For a business, using the company letterhead is good practice because it shows the letter genuinely comes from the business and adds credibility. The letter should carry the date, the name and details of the person authorised, a clear description of what they are permitted to do, any time limit, and the signature of the person granting the authority. Some offices may ask for an identity proof of the authorised person to be attached, so it is sensible to check what the receiving party expects.

Can an authorization letter be for a fixed period?

Yes, and it often should be. A good authorization letter states clearly how long the authority lasts or ties it to a single task, so it does not remain open-ended. You might authorise a person to collect deliveries for a specific month, or to handle one particular submission. Setting a clear limit protects the business, because the authority ends automatically when the period or the task is over, and there is no lingering permission that could be misused later.

Authorization Letter Format: Sample and Uses (2026)

An authorization letter is the everyday cousin of the more formal power of attorney. When a business owner wants a staff member to collect a cheque, receive a delivery, or submit papers at an office in their place, a short, clear authorization letter does the job without the weight of a stamped legal deed. Because it is so common and so simple, it is also often written badly, missing the very details the receiving party needs. This guide explains what an authorization letter is, when a business uses one, a ready sample layout, the fields it must carry, and how it differs from a power of attorney.

What an authorization letter is

An authorization letter is a written note by which one person or business permits another to act on their behalf for a specific, limited purpose. It is lighter than a power of attorney and is meant for defined, usually short tasks. The letter names the person being authorised, states exactly what they are allowed to do, often sets a time limit, and is signed by the person or business granting the authority. Its whole purpose is to give a third party, such as a bank, a courier, or an office, written proof that the person standing in front of them genuinely has permission to act for the business.

When a business uses one

Authorization letters show up across ordinary business life whenever someone acts in another's place for a small task. Common uses include:

Collecting on your behalf: authorising a staff member to collect a cheque, a parcel, a document or goods that would otherwise need the owner in person.
Dealing with an office: permitting a representative to submit or collect papers at a government department, a bank, or a utility office.
Vendor and process tasks: allowing an employee to handle a specific process with a supplier or a service provider.
Representation: authorising a person to attend a meeting or represent the business in a defined matter.
Account and delivery access: naming who may receive deliveries or handle a specific transaction during a set period.

A sample authorization letter layout

Here is a plain structure you can adapt onto your business letterhead. Replace the bracketed parts with your own details and keep the permitted task narrow and specific.

The fields it must carry

A useful authorization letter is short, but it must not skip any of these fields, because each one is something the receiving party checks:

Date of issue: so the reader knows the letter is current and not an old one being reused.
Who is granting authority: the name, designation and business of the person giving the permission.
Who is authorised: the full name and an identity detail of the person allowed to act, so they can be recognised.
The exact task: a precise description of what the person may do, kept narrow to a single defined purpose.
Validity: a time limit or a link to the one task, so the authority does not stay open-ended.
Signature and seal: the signature of the person granting authority, ideally with the company seal on letterhead.

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How it differs from a power of attorney

People often confuse an authorization letter with a power of attorney, but the two are meant for different weights of task. Knowing which to use saves both effort and risk:

As a rule, use an authorization letter for a small, defined task, and a power of attorney where the authority is wide, ongoing, or involves property and major transactions. Reaching for a full power of attorney for a task a simple letter would cover only adds cost and delay.

Writing a letter the other side will accept

The point of an authorization letter is that a third party accepts it without hesitation, so write it with that reader in mind. Put it on your business letterhead so it plainly comes from the business, name the authorised person exactly as their identity proof reads, and describe the task so specifically that there is no room to stretch it. Many offices ask the authorised person to carry a copy of their own identity proof along with the letter, so it is sensible to attach one or tell the person to bring it. A letter that is vague about who is authorised or what they may do gives the receiving clerk a reason to refuse, which defeats the entire purpose, so precision here is what makes the letter actually work on the day.

Keeping a record of what you authorised

Every authorization letter you issue is a small grant of authority, and it is worth keeping a copy of each one along with the date, the person, and the task. This matters because an authorization can be misused if it is too broad or left open-ended, and a record lets you see exactly what was granted and when it lapsed. Keeping your business documents and correspondence together, as with the tools on our features page, means you can find any letter you issued at short notice. The same discipline applies to your invoices and party records, which a GST billing software keeps in one place, so the whole trail of what your business authorised and transacted stays together.

The bottom line

An authorization letter is the simple, everyday way to let someone act for your business on a defined task, without the weight of a formal deed. Write it on letterhead, name the authorised person and the exact task clearly, set a time limit, and sign it. Use a power of attorney instead only when the authority is wide, ongoing, or involves property and significant transactions. Keep a copy of every letter you issue so you always know what was authorised. IndiaCRM keeps your business records and correspondence in one free app, so the trail of what you authorised stays together. Get the mobile app and keep your records in order.