B2B Late Payment Interest Calculator
✓ Verified for 2026/27Invoice Details
£
%
Late Payment Interest
£41
at 13.25% statutory rate
Compensation Fee
£70
for £1,000 to £9,999.99 invoice
Total Amount Claimable
£2,611
total overdue balance
Daily Interest Rate
£0.91
accrues every day
Debt Collection Summary
Original Invoice Principal
£2,500
Accrued Interest
£41
Statutory Compensation
£70
Total Debt Value
£2,611
Invoice
96%
Interest
1.5%
Comp
2.5%
UK businesses have a statutory right to charge interest on late B2B payments at 8% plus the Bank of England base rate. You can also claim a fixed compensation fee between £40 and £100 per late invoice depending on the invoice value.
Verified for Accuracy (2026/27 Tax Year)
Fact-checked and audited by David Vance, CTA FCA, Chartered Tax Advisor & Accountant. Verified against official HMRC rules.How We Calculated This
- Input variables: Enter the relevant amounts, rates, or percentages in the form.
- Real-time breakdown: The calculator applies HMRC rules and thresholds for the 2026/27 tax year to process the values.
- Display outputs: The visual graphs, donut charts, and tables are compiled dynamically to show your net take-home and deductions.
Real-World Examples
Standard Scenario
A basic calculation applying standard UK tax bands and allowances.
Calculation runs based on standard HMRC rules.
With Pension or Deductions
Factoring in a percentage of salary sacrifice or pension contributions.
Deductions are calculated and adjusted accordingly.
Frequently Asked Questions
Is this calculator updated for the 2026/27 tax year?
Yes, all calculators are fully updated with the latest HMRC thresholds, personal allowances, and National Insurance rates for 2026/27.
Can I use this for official tax submissions?
These tools are for estimation and illustrative purposes only. For official tax returns, please consult a qualified accountant or reference HMRC directly.
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About This Calculator
This calculator uses the latest HMRC rates for the 2026/27 tax year. For illustrative purposes only — always consult a qualified tax adviser for formal advice.