databutler.dev · /facts — every fact · Verified Facts protocol · /.well-known/facts.json · /changes

Online deadline to pay through your tax code

2026-12-30 date

standing figure · verified 2026-10-04 against the official source

If you want to pay your Self Assessment bill through your tax code, you must submit it by 11:59pm on 30 December 2026.

key

uk/gov/self-assessment/tax-code-deadline

value

2026-12-30 date

period

—

effective

— to date

source

https://www.gov.uk/self-assessment-tax-returns/deadlines

verified

2026-10-04 — fresh (33 days ago; next check by 2026-11-03)

next expected change

none named (irregular: changed by statute or order on no fixed date)

source checked

2026-11-02 (the newest day the automated check fetched the source page)

scope

UK Self Assessment for the 2025-26 tax year (6 April 2025 to 5 April 2026); dates roll forward each year.

hash

sha256:a79286bfee688ed3dc4ac1c73cb519be4fd6491688cdbb417dc55b02cf616da7

signature

EdDSA, key db-2026-10 — keys

As JSON

curl -s https://databutler.dev/f/uk/gov/self-assessment/tax-code-deadline?max_age=30d — schema; verify with npx verified-facts verify https://databutler.dev/f/uk/gov/self-assessment/tax-code-deadline

{
  "protocol": "verified-facts/0.3",
  "key": "uk/gov/self-assessment/tax-code-deadline",
  "aliases": [
    "uk/gov/tax-return/tax-code-deadline",
    "uk/gov/sa/tax-code-deadline",
    "uk/gov/self-assessment-deadline/tax-code-deadline",
    "uk/gov/mtd/tax-code-deadline",
    "uk/gov/making-tax-digital/tax-code-deadline"
  ],
  "label": "Online deadline to pay through your tax code",
  "value": "2026-12-30",
  "unit": "date",
  "period": null,
  "effectiveFrom": null,
  "effectiveTo": null,
  "source": "https://www.gov.uk/self-assessment-tax-returns/deadlines",
  "quote": "If you want to pay your Self Assessment bill through your tax code, you must submit it by 11:59pm on 30 December 2026.",
  "verifiedDate": "2026-10-04",
  "nextScheduledRefresh": "2026-11-03",
  "changeCadence": "irregular",
  "nextExpectedChange": null,
  "sourceCheckedAt": "2026-11-02",
  "status": "fresh",
  "ageDays": 33,
  "maxAgeDays": null,
  "scope": "UK Self Assessment for the 2025-26 tax year (6 April 2025 to 5 April 2026); dates roll forward each year.",
  "hash": "sha256:a79286bfee688ed3dc4ac1c73cb519be4fd6491688cdbb417dc55b02cf616da7",
  "signature": {
    "alg": "EdDSA",
    "kid": "db-2026-10",
    "jws": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRiLTIwMjYtMTAifQ..SE4czf8_9sU9IHxrJTQxmxchfX1ITEVpx4MtBNYx_49EvbNbOSm2OH51P8lkFNWQ4rFG-SLuJltEdxUsqZIiDg",
    "keys": "https://databutler.dev/.well-known/jwks.json"
  },
  "publisher": {
    "name": "Data Butler",
    "url": "https://databutler.dev/"
  },
  "cite": {
    "url": "https://databutler.dev/facts/uk/gov/self-assessment/tax-code-deadline",
    "text": "databutler.dev, verified 2026-10-04 against https://www.gov.uk/self-assessment-tax-returns/deadlines"
  }
}