Please note that this website has a UK government accesskeys system.
If you have difficulties dealing with your tax credits, you can ask someone else to help you. But they'll need your authority to talk to the Tax Credit Office on your behalf.
There are various types of people or organisations that can act on your behalf. They are often known as ‘intermediaries’, and can include:
You can also get a paid professional adviser such as an accountant, solicitor or tax adviser to help you. These are often known as ‘agents’ rather than intermediaries. If you want to do this, there are different arrangements that you need to follow.
You can find out more by following the link below.
An intermediary can:
They cannot receive the payment on your behalf as that goes straight into your own bank account.
You need to authorise someone to act for you if, for example, you:
You don’t need to authorise someone to act if you just want them to get general advice for you. This is because they won’t be asking for or giving any personal information about you or your claim.
You can get someone authorised just for the length of a phone call. But you'll need to be with them in person when you contact the Tax Credit Helpline. You will be asked to confirm your identity and to authorise the intermediary to speak on your behalf during the call.
What to do | Helpful hints |
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Step 1 - Fill in form TC689 Authority for an intermediary to act on your behalf |
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Step 2 - Ask your chosen intermediary to fill in the details on the back of the form |
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Step 3 - Send the completed form TC689 or letter to the Tax Credit Office, Preston, PR1 4AT |
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You have to deal with your own tax credit matters until the Tax Credit Office has received your claim form and completed form TC689. So don’t delay sending them back. In the meantime the person acting for you can still get in touch with the Tax Credit Helpline. But you'll need to be with them in person when they call.
The Tax Credit Office will deal as quickly as possible with the authorisation. This usually takes about 48 hours from the time they get your letter or completed form TC689.
Change | What to do |
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You have a joint claim for tax credits, and have given joint authorisation, but you have split up with your partner |
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You want a different person or organisation to act on your behalf |
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You want to change the end-date of the authorisation |
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If you want to renew the authorisation, you will need to fill in and return a new form TC689. Or you can send in a letter giving the same information as on the form TC689. A photocopied form is acceptable, but any signatures must be original.
You should renew in plenty of time - ideally at least two days before the deadline is up. This is to ensure that your intermediary’s authorisation does not run out.
If you need more help you can call the Tax Credit Helpline.
If you don’t speak English as a first language, you can ask to be put through to someone who can translate for you. You can use your own interpreter if you want, but they must be with you when you call.
Provided by HM Revenue and Customs