Help Centre · VAT · 3 min read

Reconnect to HMRC (and fix the "wrong account" message)

Renew your HMRC connection in two minutes, and sort out the "incorrect Government Gateway account" message.

From time to time Tax Optimiser needs to be reconnected to HMRC — the permission you grant lasts 18 months, and occasionally a connection is made with the wrong sign-in details. The good news: reconnecting takes about two minutes, and if you've seen a “connected to an incorrect Government Gateway account” message, this article shows you exactly how to sort it out.

Step 1: Reconnect to HMRC

From the sidebar, go to VAT → VAT Returns. On the blue bar at the top of the screen, click Reconnect to HMRC.

The VAT Returns screen with the Reconnect to HMRC button highlighted on the top blue bar

Choose Connect to HMRC — this connects using your organisation's own account, letting Tax Optimiser view and submit your VAT returns.

The Connect to HMRC option: View and Submit using Organisation Account

You'll be taken to HMRC's website. The first page simply explains what you're agreeing to — press Continue.

HMRC's first page: allow your software to connect with HMRC, with a Continue button

The next page tells you what to have ready: the Government Gateway user ID and password you use for your business's VAT. Click Sign in to the HMRC online service.

HMRC's what-you-will-need page with the Sign in to the HMRC online service button

Enter your Government Gateway user ID (up to 12 characters) and password, then press Sign in. HMRC may also ask you a security question or send a code to your phone.

The Government Gateway sign-in page asking for your user ID and password

Finally, press Give permission. That's it — you're reconnected for another 18 months, and your VAT periods will refresh on the VAT Returns screen.

HMRC's give permission page confirming the permission lasts 18 months

Seen this message? You're connected to the wrong account

The error dialog: it appears the company is connected to an incorrect Government Gateway account

Don't worry — nothing is broken. This message means the Government Gateway sign-in you used doesn't hold this company's VAT registration. It usually happens because you have more than one set of HMRC sign-in details — for example a personal one for your own self-assessment and a business one for the company's VAT — and the wrong one was used when connecting. The fix is simply to check which account is the right one, then reconnect with those details.

Check your account on the Government's website

Go to www.gov.uk/log-in-register-hmrc-online-services and press the green Sign in button.

The GOV.UK HMRC online services page with the green Sign in button

Choose Government Gateway and press Continue.

The Sign in to HMRC page with Government Gateway selected

Sign in with the same user ID and password you used when connecting in Tax Optimiser.

The Government Gateway sign-in page with the forgotten-details links under Problems signing in

Forgotten your details? Use the links under Problems signing in on this page — HMRC can recover your user ID, your password, or both. A handy shortcut: your Government Gateway user ID was emailed to you when the account was first created, so try searching your email inbox for “Government Gateway”.

Once signed in, you'll land on your Business tax account. Scroll down and look for a VAT section showing your VAT registration number — if it's there, these are the right details to use.

The HMRC Business tax account dashboard with the VAT section highlighted at the bottom

Can't see VAT on the dashboard? Then this sign-in doesn't have access to your business's VAT. You may have signed in to a personal account (the one you use for self-assessment) or to a different business's account — try your other sign-in details. (Accountants' agent accounts look different again; if your accountant manages your VAT, ask them to connect using their agent login.)

Reconnect with the right details

Once you've confirmed which account shows your VAT, head back to Tax Optimiser: VAT → VAT Returns, click Reconnect to HMRC on the top blue bar, and follow the steps from the top of this article using the confirmed sign-in details.

Still stuck? Email us at support@taxoptimiser.co.uk — we're happy to help.

Related: Connect to HMRC and find your VAT periods.

The short version

Reconnect to HMRC (and fix the "wrong account" message) — in brief

Reconnect from VAT, VAT Returns using the Reconnect to HMRC button on the top blue bar - press Continue on HMRC's first page, sign in and give permission.

The "incorrect Government Gateway account" message means the sign-in you used does not hold this company's VAT - usually a personal or different business login.

Check at www.gov.uk/log-in-register-hmrc-online-services: sign in and look for a VAT section on your Business tax account; if VAT is not listed, those are the wrong details.

Forgotten your details? Use the Problems signing in links, or search your email for "Government Gateway" - your user ID was emailed when the account was created.