Guide

How to nominate SMT Accounting as your tax agent

Using ATO client-to-agent linking · Registered Agent No. 26266813 · Updated October 2026

If your business is a company, trust, partnership or SMSF, the ATO requires you to nominate your registered tax agent yourself before we can act for you. It's a quick, one-off step for each new agent that you complete in ATO Online services for business — here's exactly how.

Individuals & sole traders: you do not currently need to do this. We can be authorised to act for you without agent nomination — just complete our online onboarding and we'll handle the rest.

Before you start

You'll need:

  • myID (formerly myGovID) set up on your phone, and
  • to be the business's principal authority — a director, partner or trustee listed on the ABN — or someone they have authorised in Relationship Authorisation Manager (RAM).

New to myID or Online services for business? Give us a call and we'll explain the set-up.

The steps

  1. Sign in to ATO Online services for business

    Sign in with your myID. You need to be the principal authority for the business, or an authorised user set up in RAM.

  2. Go to Profile → Agent details

    From the home page select Profile, then Agent details. At Agent nominations, select Add.

  3. Search for our Registered Agent Number

    On the Nominate agent screen, enter 26266813 and select Search. Select SMT Accounting Pty Ltd, check the details are ours, complete the declaration and select Submit.

  4. Tell us it's done

    The ATO doesn't notify us automatically, so let us know once you've submitted. We then have 28 days to add you as a client.

Heads up: the nomination expires after 28 days if it isn't actioned. If more time is needed you can extend it by another 28 days before it expires — so please tell us as soon as you've submitted it.
Keep your myID to yourself. We can't sign in or complete the nomination for you, and you should never share your myID or login codes with anyone — including us.

Official ATO guidance

You can read the ATO's own instructions here: How to nominate your registered agent (ato.gov.au). If you can't use Online services for business, you can nominate by phoning the ATO's business enquiries line on 13 28 66. Verify our registration any time on the TPB public register.

Frequently asked

Who needs to nominate a tax agent?

Every entity with an ABN except sole traders — companies, trusts, partnerships, SMSFs and not-for-profits — when engaging a new registered agent or changing an existing agent's authorisations. Individuals and sole traders don't currently need this step.

What is SMT Accounting's Registered Agent Number?

Our Registered Tax Agent Number is 26266813. Enter this number when nominating us.

How long does the nomination last?

We have 28 days to add you as a client. If more time is needed you can extend the nomination by another 28 days before it expires; once it has expired, a new nomination is required.

Do individuals and sole traders need to do this?

Not currently. We can be authorised to act for individuals and sole traders without client-to-agent linking — just complete our online onboarding.

Can SMT Accounting complete the nomination for me?

No — the ATO requires the business to do it. We can explain each screen, but we can't sign in for you, and you should never share your myID or login codes with anyone, including us. If you can't use Online services for business, you can nominate by phoning the ATO's business enquiries line on 13 28 66.

Stuck on a step? We'll walk you through it.

Call or message and we'll guide you through myID, RAM and the nomination screen.