PIP Appeal Deadline: One Month, Late Appeals, and the 13-Month Limit

The standard one-month deadline

You have one calendar month from the date printed on your Mandatory Reconsideration Notice to submit your SSCS1 appeal form to HMCTS. The clock starts from the date on the letter itself, not the date you received it — though if you can show it arrived late (for instance, you were in hospital or the post was delayed), that matters if you end up filing late.

The deadline falls on the corresponding date in the next month. An MRN dated 14 October gives you until 14 November. If that date lands on a weekend or bank holiday, the deadline rolls to the next working day.

File your appeal online through GOV.UK for confirmation by email, or post the paper form to HMCTS Benefit Appeals, PO Box 12626, Harlow, CM20 9QF early enough for HMCTS to receive it by the deadline.

What happens if you miss the one-month deadline

Missing the deadline does not automatically kill your appeal. You can still submit a late SSCS1, but you must include a written explanation of why you could not file in time. If the DWP does not object, a late appeal within the 12-month extension period is generally treated as in time; if it objects, the Tribunal decides whether to extend the time limit.

Good reasons that tribunals have accepted include serious illness, hospitalisation, bereavement, a mental health crisis, communication difficulties, or not receiving the MRN letter in time. The explanation does not need to be elaborate — it needs to be honest and supported by any evidence you have (a hospital discharge letter, a GP note, a Royal Mail complaint reference).

Filing a late appeal does not guarantee acceptance. The judge weighs the length and reason for the delay against the interests of justice.

The 13-month outer boundary

The usual maximum is 13 months from the date of the MRN. After that, the door is almost entirely shut. The Upper Tribunal has said a further extension may be possible only in exceptional circumstances where you personally have done all you can to appeal in time. This is a very narrow exception and should not be relied on.

If you are anywhere close to the 13-month limit, file immediately. A weak late-filing reason submitted before the deadline expires is better than a strong one submitted after it.

Practical steps if you are running late

1. File the SSCS1 as soon as possible — every day of additional delay makes the late-filing argument harder.
2. Write a clear explanation in the grounds of appeal section. State the date you received the MRN, what prevented you from filing in time, and when the barrier lifted.
3. Attach supporting evidence — any document that corroborates your reason for the delay.
4. Keep a copy of everything, with proof of the date you submitted.

If your late appeal is rejected, that refusal itself can be challenged — though at that stage, getting advice from Citizens Advice, a Law Centre, or a welfare rights service is strongly recommended.

Do not let the deadline pass by default

Many people who lose at mandatory reconsideration assume a tribunal appeal will also fail. The statistics suggest otherwise — 67% of PIP appeals cleared at hearing in April to June 2026 were decided in the claimant's favour. Missing the deadline because you assumed it was not worth trying means losing the right to an independent review of your case.

The PIP Tribunal Appeals guide includes a deadline tracker and MRN logging tool to help you stay on top of the timeline from the moment your reconsideration notice arrives.

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