Form SSCS5 UK: Appeal HMRC Tax Credit Decisions
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If HMRC has made a decision about your Tax Credits, Child Benefit, Guardian's Allowance, Tax-Free Childcare or 30 Hours Free Childcare that you believe is wrong, you may be able to challenge it at a tribunal. Form SSCS5 is the form you use to lodge that appeal with HM Courts and Tribunals Service once HMRC has already completed a mandatory reconsideration.
On this page I'll walk you through what the form does, who should use it, the sections you'll need to complete and the kind of evidence that tends to make a difference. I'm Brad Askew, Legal Tech Founder at LegalDocuments.co.uk, and my aim here is to give you a plain-English overview so you can approach the process with a bit more confidence rather than feeling lost in the paperwork.
What this document is
Form SSCS5 is the official Notice of Appeal used to ask the First-tier Tribunal (Social Entitlement Chamber) to review a decision taken by HM Revenue and Customs. It covers a specific set of HMRC-administered benefits and schemes: Tax Credits (both Working Tax Credit and Child Tax Credit), Child Benefit, Guardian's Allowance, Tax-Free Childcare and 30 Hours Free Childcare.
The tribunal is independent of HMRC and looks at the decision afresh based on the evidence put before it. Before you can use SSCS5, HMRC must have carried out a mandatory reconsideration and issued a notice setting out the outcome.
That notice is what gives you the right to appeal, and a copy of it needs to be sent with the form. The form is designed to capture everything the tribunal needs to register your appeal: who you are, what decision you're challenging, the grounds you're relying on and whether you want to attend a hearing in person. Getting those details right at the start helps avoid delays later on.
How to use this document
- Check your mandatory reconsideration notice. Before completing SSCS5, make sure HMRC has already reconsidered the decision and issued you with a mandatory reconsideration notice. That notice confirms your right to appeal and sets out the deadline. You'll need to attach a copy when you submit the form, so keep it safe.
- Complete the required sections in black ink. Fill in sections 1, 2, 5, 6 and 8 using block capitals unless a section says otherwise. Add section 3 if you're appealing on behalf of someone HMRC or a court has appointed you to look after, section 4 if you have a representative, and section 7 if you want to attend a hearing.
- Set out your grounds for appeal clearly. In section 5, explain why you think the HMRC decision is wrong. Be specific about which parts of the decision you disagree with and why. If your appeal is being submitted outside the usual time limit, you must also explain the reason for the delay so the tribunal can decide whether to accept it.
- Gather supporting evidence. While the form itself is the starting point, your appeal is far stronger when backed by documents such as award letters, payslips, correspondence with HMRC, bank statements or anything else that supports what you're saying. Make copies for your records before sending anything off.
- Send the form to the tribunal. Sign and date the declaration, then post the completed form along with the mandatory reconsideration notice and any supporting evidence to the address shown on the form. Check gov.uk for the current submission address and any updated guidance before you send it.
Common questions
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Common questions
Q Who can use Form SSCS5?
Anyone challenging an HMRC decision on Tax Credits, Child Benefit, Guardian's Allowance, Tax-Free Childcare or 30 Hours Free Childcare can use this form, provided HMRC has already carried out a mandatory reconsideration. You can appeal on your own behalf, on behalf of a child, or for someone whose affairs you've been appointed to manage. Representatives such as advice workers or family members can also be recorded on the form.
Q Do I need a mandatory reconsideration before appealing?
Yes. The tribunal will not register an appeal using SSCS5 unless HMRC has completed a mandatory reconsideration and issued a notice. That step gives HMRC the chance to look at the decision again before it goes to an independent tribunal. The notice confirms your appeal rights and sets the clock running on the time limit for lodging your appeal.
Q How long do I have to submit Form SSCS5?
There is a strict time limit from the date on your mandatory reconsideration notice, and it is typically one month. If you miss it, you can still try to appeal, but you'll need to explain the delay in section 5 and the tribunal will decide whether to accept the late appeal. It's safer to act quickly rather than rely on a late appeal being allowed.
Q Will I need to attend a hearing?
Only if you want to. Section 7 asks whether you'd like an oral hearing where you can explain your case to the tribunal in person, by phone or by video. If you prefer, the tribunal can decide the appeal on the papers alone. Many people find attending a hearing useful because it lets them respond to questions directly, but it is your choice.
Q Is there a fee for appealing with SSCS5?
Appeals to the First-tier Tribunal in social security and tax credits matters are generally free to lodge, but fees and procedures can change. Check gov.uk for the current position before you submit. There is no charge for the form itself, and you can complete it without using a solicitor, though some people prefer to have a representative help them.
Q Can someone else complete the form for me?
Yes. If you have a representative, their details go in section 4. This can be a friend, family member, advice worker or someone from an organisation such as Citizens Advice. If you're appealing for a child or on behalf of someone whose affairs you manage by appointment, section 3 captures their details. The form is designed to accommodate those situations.
Q What happens after I send the form?
The tribunal service checks your appeal has been correctly lodged and then notifies HMRC, which must respond with its own submission. You'll be sent copies of HMRC's response and given the chance to reply. A hearing date is arranged if you've asked for one. Timescales vary, so it's worth checking gov.uk for guidance on current waiting times.
If you're dealing with this kind of situation, speak to an experienced legal adviser who can walk you through it — from £89.
Sources
This guide is based on primary UK law and official guidance.
- Guidance · HMRCForm SSCS5 on gov.ukgov.uk
- Guidance · UK GovAppeal a benefit decision (gov.uk)gov.uk
- Guidance · UK GovMandatory reconsideration (gov.uk)gov.uk
Legal helpline
Unsure whether to appeal an HMRC decision?
Challenging a Tax Credit, Child Benefit or Guardian's Allowance decision can feel daunting, especially when you're weighing up deadlines and grounds for appeal. An experienced legal adviser can help you think through your options on the call based on what you describe, so you know where you stand before filling anything in.
- Plain-English answers to your specific questions about SSCS5
- Practical perspective on the grounds and deadlines that apply to your situation
- Clarity on what to include when describing your appeal
- Help thinking through your next steps before you post the form
Legal disclaimer
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.