VAT Late Payment Costs - Worked Examples August 2026
| VAT bill | Days late | Interest | Penalties | Total HMRC cost | Bridge alternative (approx) |
|---|---|---|---|---|---|
| £10,000 | 10 days (grace window) | £21 | £0 - no penalty if TTP agreed | £21 | Bridge ~£500 - act before day 15 for cheapest outcome |
| £25,000 | 20 days | £107 | £750 (first 3%) | £857 | Bridge ~£900 - comparable; bridge wins on certainty |
| £25,000 | 40 days | £213 | £1,500 (3%+3%) | £1,713 | Bridge ~£1,000 - bridge clearly cheaper |
| £50,000 | 20 days | £213 | £1,500 (first 3%) | £1,713 | Bridge ~£1,600 - act before day 30 is critical |
| £50,000 | 40 days | £425 | £3,000 (3%+3%) | £3,425 | Bridge ~£1,700 - bridge significantly cheaper |
| £100,000 | 40 days | £850 | £6,000 (3%+3%) | £6,850 | Bridge ~£3,000 - bridge much cheaper at 40+ days |
Indicative rates - August 2026. Rates change daily. Actual rate depends on LTV, security, credit profile, loan size, and exit strategy. Contact our team for a live rate comparison for your specific case. All rates sourced from lender product sheets and publicly available market data.
What determines your rate
The 15-day grace window: Pay in full OR agree HMRC Time to Pay within 15 days of the due date and the first 3% penalty never applies. Interest still runs from day 1. This 15-day window is the most valuable fact on this page. If your deadline passed recently, act within this window immediately.
How the three penalties stack: All three apply to the outstanding balance at the point each is triggered. Penalty 1 (3%) at day 15. Penalty 2 (3%) at day 30. Penalty 3 (10%/year) from day 31 - calculated daily on the remaining outstanding amount. Partial payment before each threshold reduces the penalty base.
Penalty points for late filing (separate): Late submission penalties operate on a separate points system - 1 point per late return, £200 fine when 4 points accumulated (quarterly filers). Filing on time but paying late avoids submission penalties. Both systems are independent.
Comparing the new vs old regime: The old default surcharge did not apply to first-time late payments and started at 2% for repeat offences. The new regime applies a 3% penalty from the first late payment (after the 15-day window), making it materially harsher for short, first-time delays.
Worked cost example
- Full example: £40,000 VAT bill paid 45 days late.
- Interest: £40,000 × 7.75% × (45/365) = £383.
- Penalty 1 (day 15): £1,200. Penalty 2 (day 30): £1,200. Penalty 3 (10%/yr, 15 days): £164.
- TOTAL HMRC COST: £2,947.
- Bridge to pay on time: 0.75%/month × 2 months on £40,000.
- Cost: £606 interest + £600 fee + £1,800 legal = £3,006.
- INTEREST BREAKDOWN - bridge: £606 interest + £600 fee + £1,800 legal = £3,006.
- INTEREST BREAKDOWN - HMRC at 45 days: £383 interest + £1,200 + £1,200 penalties = £2,783.
- NET SAVING at 45 days: HMRC (£2,783) is £223 cheaper. Very close - bridge is insurance against further escalation.
- NET SAVING at 60 days: Bridge (£3,100) vs HMRC (~£3,600). Bridge saves ~£500.
- NET SAVING at 90 days: Bridge (£3,300) vs HMRC (~£5,200+). Bridge saves ~£1,900.
- CONCLUSION: Bridge breaks even with HMRC penalties at approximately 50 days. Beyond this, bridge is always cheaper - and always avoids enforcement risk.
Rate context and outlook
HMRC reported 220,000+ VAT penalty points issued in the first full year of the new regime (2025/26). The April 2025 reform hit harder for short delays than the old default surcharge. HMRC late payment interest increased from base rate +2.5% to base rate +4% in April 2025 - both changes together make prompt payment (or fast bridging) significantly more valuable than before 2025.