HMRC's 51-day example
A qualifying higher-rate VAT liability of £15,000 is paid in full 51 days late, with no Time to Pay or part-payments.
£450 at day 15 + £450 at day 30 + £15,000 × 10% × 21/365 (£86.30) = £986.30. Interest is excluded.
Sourced statutory estimate
VAT Late Payment Penalty Calculator
Estimate VAT late-payment penalties for one full payment, with the 2025 transition and day-15/day-30/daily breakdown.
Effective scope: standard VAT periods from January 2024; higher rates from qualifying 2025 periods. Last reviewed 26 September 2026.
VAT Late Payment Penalty Calculator
Estimate VAT late-payment penalties for one full payment, with the 2025 transition and day-15/day-30/daily breakdown.
What this calculation covers
Standard VAT return period starting from January 2024; one full payment, no partial payments, credits, instalments, Time to Pay proposal/agreement or mitigation. At most one year late. Interest is not calculated.
Rule summary
Rules and effective period
For this standard full-payment case, paying by day 15 gives no late-payment penalty. Payment on days 16–30 attracts a first component on the day-15 outstanding balance. After day 30 another component is added on the day-30 balance; a second penalty accrues daily from day 31 through the payment day inclusive.
The higher rates are 3% at each first-penalty stage and 10% annually for the second penalty. HMRC CH193140 requires both a VAT period starting on/after 1 April 2025 and a due date on/after 31 May 2025. Otherwise the supported earlier rates are 2%, 2% and 4% annually. A payment made later does not itself move an older liability into the new regime.
Daily calculation uses the relevant unpaid balance × annual rate × days/365. Here there are no part-payments, so the supplied amount stays outstanding until full payment. Penalty components are shown separately. Late-payment interest is additional and excluded, including during the first 15 days.
A Time to Pay proposal accepted by HMRC can change the penalty position. Partial payments, credits, instalments, assessments, reasonable excuse and mitigation need separate review. Periods before January 2024 and delays longer than one year are outside this calculator; it does not model the 2023 familiarisation concession.
Worked examples
How the result behaves in practice
Older-period transition
The same £15,000 and 51-day delay relates to a VAT period beginning before 1 April 2025.
The earlier regime applies: £300 + £300 + £34.52 = £634.52, even if payment is after the rate change.
Turn the result into an action plan
Check the dates and balances against the relevant HMRC account and records.
Use the paired guide for the rule basis, exceptions and next steps.
Read the guide
VAT late payment penalties
Read the supported rule, assumptions and worked examples behind this tool.
Assumptions and limits
This tool gives a practical estimate and depends on the assumptions shown below.
Assumptions
- Standard VAT return period starting from January 2024; one full payment, no partial payments, credits, instalments, Time to Pay proposal/agreement or mitigation. At most one year late. Interest is not calculated.
Limits and rule basis
- An estimate under entered facts, not an HMRC assessment. Choose No / unsure for facts outside the supported case; professional review is required.
- Appeals, reasonable excuse, disputed balances and specialist reliefs are not determined here.
Primary sources and review date
Reviewed on . Preserved source review from the accepted scoped statutory repair; this contract migration does not re-date that review.
Applies to: Supported VAT periods from January 2024; higher rates apply to qualifying 2025 periods.
Reviewed scope: One full payment, at most one year late; no partial payments, credits, Time to Pay, instalments or mitigation; interest excluded.
- GOV.UK — VAT payment penalty timeline and worked example (verified 26 September 2026)Supports: VAT payment penalty timeline and worked example
- HMRC CH193140 — precise 2025 transition (verified 26 September 2026)Supports: precise 2025 transition
Review basis and change triggers
Reviewed model: vat-late-payment-penalty-calculator: standard VAT periods from January 2024; higher rates from qualifying 2025 periods; reviewed 26 September 2026
- A cited source or statutory regime changes.
- Reviewed content, runtime adapter or domain implementation changes.
- A new effective period falls outside the supported scope.