Why redundancy creates a refund
UK Income Tax through PAYE is calculated cumulatively across the tax year. Each pay period, your employer's payroll looks at:
- Your year-to-date earnings
- Your personal allowance pro-rated to that period
- The bands above the allowance applied pro-rata
It then calculates the correct cumulative tax for the year-to-date, and deducts whatever's needed to bring your year-to-date deductions to that figure.
When you're made redundant mid-year, here's what happens:
- Your year-to-date earnings stop growing (no more salary)
- You may receive a one-off redundancy payment + notice pay + holiday pay
- PAYE deducts tax on the termination payments at your projected marginal rate
- But your annual total ends up significantly lower than PAYE projected
The mismatch creates the overpayment. HMRC eventually reconciles it — either automatically at year end, or via your manual claim.
Worked example — £50,000 earner, redundant in October
Scenario: £50,000 salary, made redundant 6 October 2026 with £20,000 redundancy + £8,000 notice + £3,000 holiday. No further employment that tax year.
What actually happened in PAYE up to October: - 6 months of salary at £50,000/year: £25,000 received - Income Tax deducted at 20% basic rate on the post-allowance portion (~£3,743) - NI deducted (~£1,497) - Plus tax on termination payments (~£2,200)
Total tax deducted by termination: ~£6,000-£7,000 (Income Tax only)
Annual actual income: £25,000 (salary) + £20,000 redundancy + £8,000 notice + £3,000 holiday = £56,000 gross
Correct annual Income Tax position (assuming no further income): - £30,000 of redundancy tax-free - £26,000 effective taxable income (£25,000 salary + £8,000 notice + £3,000 holiday - £10,000 redundancy that's still under threshold) - Wait, let me redo this — redundancy is tax-free so doesn't count in taxable; £25k + £8k + £3k = £36k taxable - Less personal allowance: £36,000 - £12,570 = £23,430 taxable - Income Tax: £23,430 × 20% = £4,686
So annual Income Tax should have been around £4,686 for the year, plus NI on salary + notice + holiday. PAYE deducted closer to £6,000-£7,000. The refund is approximately £1,000-£2,000.
The exact figure depends on the breakdown — this is illustrative.
When you're owed a refund
You're typically owed a refund if any of these apply:
- You were made redundant before March/April
- You haven't found another job in the same tax year (or earn much less)
- Your termination payments pushed you temporarily into higher bands that you don't actually sit in for the full year
- You have a P45 from your previous job
- Your P45 shows year-to-date deductions higher than expected
If you start a new job in the same tax year at similar pay, PAYE in the new job often reconciles automatically — your P45 is handed over and the new employer adjusts deductions.
The four refund routes
Route 1 — P50 form
Use if: You've stopped working AND you're NOT claiming Jobseeker's Allowance or Universal Credit AND you don't expect to return to UK work for at least 4 weeks.
How: Submit form P50 to HMRC (online or paper) with your P45.
Timeline: Refund typically within 5 working weeks.
Best for: People retiring early, taking a sabbatical, or moving overseas after redundancy.
Route 2 — P53 form
Use if: You've taken a small pension as a lump sum (typically the 25% tax-free element from a DC pension) and Income Tax was withheld.
How: Submit P53 with the pension provider's certificate.
Timeline: Similar to P50, ~5 weeks.
Best for: Over-55s who've accessed pension lump sum shortly after redundancy.
Route 3 — Self Assessment
Use if: You file SA anyway, OR your total income exceeds £150,000 in the year, OR your tax position is complex (multiple incomes, foreign income, large pension contributions).
How: Submit your SA return by 31 January after the tax year ends. Refund processed shortly after filing.
Best for: Higher earners or anyone whose tax situation is complex enough that SA captures the full picture.
Route 4 — HMRC P800 (automatic year-end)
Use if: None of the above applies, or you're claiming benefits (which complicates P50).
How: Wait. HMRC sends a P800 tax calculation statement after the tax year ends, typically June-October. If a refund is due, the statement explains it and how to claim.
Timeline: P800 arrives 6-12 months after redundancy.
Best for: Simple cases where you're not impatient and don't need the refund quickly.
When NOT to claim a refund
A few situations where the refund claim is wrong:
- You're claiming Universal Credit or JSA: P50 specifically excludes these. Wait for P800.
- You've started a new job in the same year: usually handled by the new employer's PAYE automatically; submitting P50 can confuse things.
- You're awaiting a settlement agreement payment: don't claim until everything has been paid.
- You've over-contributed to pension annual allowance: this triggers a tax charge that might offset any refund.
If unsure, the safest path is to wait for the P800 (which HMRC computes automatically based on full-year data).
The pension-and-tax-refund interaction
If you've sacrificed part of your redundancy into pension before termination:
- The sacrificed amount never appears as taxable income
- Your P45 reflects the lower gross
- PAYE on the lower gross is the correct figure
- Less likely to generate a refund (because PAYE was right in the first place)
If you've taken a 25% tax-free pension lump sum after redundancy:
- This is tax-free at source
- No refund directly related to this
- But the rest of the pension drawdown is taxed via PAYE — and if PAYE is applied incorrectly (emergency rate on a lump-sum withdrawal), a P53 is the right route
Practical timeline
For someone made redundant October 2026:
| Time | Action |
|---|---|
| Oct 2026 | Receive P45 from employer in final pay run |
| Oct-Nov 2026 | If not working or claiming benefits, submit P50 with P45 |
| Dec 2026 | Refund typically lands (P50 route) |
| Apr 2027 | Tax year ends; HMRC begins reconciliation |
| Jun-Oct 2027 | If didn't claim earlier, P800 arrives with refund details |
| Jan 2028 | Self Assessment deadline if filing SA |
The faster you act (assuming you qualify for P50/P53/SA), the sooner the refund.
Tracking your refund
Once submitted:
- Personal Tax Account at gov.uk/personal-tax-account shows current year tax position
- HMRC app offers similar visibility
- HMRC contact 0300 200 3300 for status check on submitted claims
- Track P800 status via the Personal Tax Account once issued
If a P50 claim hasn't been processed after 6 weeks, follow up with HMRC.
Common refund mistakes
- Submitting P50 with multiple P45s — you need to submit only the most recent
- Claiming via P50 while on UC — invalid; wait for P800
- Forgetting tax already deducted on termination payments — the P45 shows everything
- Including pension drawdown in the P50 calculation — that's a separate P53
- Ignoring tax-year boundary effects — a redundancy paid in March may straddle tax years differently than one in October
Bigger picture — Self Assessment for large packages
For redundancy packages exceeding £100,000 or where your total annual income exceeds £150,000:
- Self Assessment is usually required regardless
- The SA return captures the full picture including pension sacrifice
- Refunds via SA are typically larger but processed only after April year-end
- Worth working with an accountant for the first SA after a large redundancy
Practical checklist
- Collect P45 from employer — should arrive within days of termination
- Calculate likely refund using the take-home calculator
- Choose the right form based on your situation
- Submit promptly — earlier submission = earlier refund
- Track via Personal Tax Account — confirm receipt and processing
- Wait for P800 if uncertain — automatic process catches most cases
In short
PAYE often over-deducts tax in the year of redundancy because cumulative calculations assume continued earning. Most redundant employees are owed a refund. Use P50 if not working/not claiming benefits, P53 if you've drawn a pension lump sum, Self Assessment if you file SA anyway, or wait for HMRC's automatic P800 reconciliation. Most refunds land within 5 weeks of submission. For broader context see the redundancy hub → and redundancy tax →.