UK CDS Duty Recovery &
Post-Clearance Audit
Identify overpayments and compliance gaps in your UK imports with a broker-agnostic audit of your CDS declarations. Our AI-powered platform analyses your MSS data, reconciles C79 certificates, and builds HMRC-ready evidence packs.
Why UK CDS Imports Are a Hidden Cost Center
When the UK moved from CHIEF to CDS, the focus was on getting goods cleared quickly. But speed doesn't equal accuracy—and that's where the money leaks.
Most customs brokers are incentivized to clear your shipments fast, not to optimise your duty spend. They're working under tight deadlines, often with incomplete product data, and they don't get paid more for finding savings. So errors slip through: wrong HS codes, missed origin preferences, incorrect valuations.
The result? You overpay duty, month after month, and no one tells you.
Common CDS Errors We See
Misapplied HS Codes
A single digit wrong can mean paying 12% duty instead of 0%.
Missed Preferential Origin
Your goods qualify for duty relief under a trade agreement, but the paperwork wasn't quite right—so you paid full rate.
Valuation Adjustments Not Applied
Royalties, assists, or freight included (or excluded) incorrectly.
Duplicate or Incorrect MSS Data
The Monthly Standing Summary doesn't match your C79, and reconciliation becomes a nightmare.
The Uncomfortable Truth
Your broker won't audit their own work. They're not incentivized to find their mistakes, and even if they wanted to, they don't have the bandwidth.
That's why you need independent oversight. Someone who isn't clearing the goods—just checking the numbers.
Our UK CDS Audit & Duty Recovery Process
We don't replace your customs broker. We provide the independent review that ensures they're getting it right—and when they're not, we help you recover what you've overpaid.
Data Ingestion
We securely pull your CDS declaration data, C79 VAT certificates, Monthly Standing Summaries (MSS), and supporting documents (invoices, packing lists, certificates of origin). You can send files via email, drag-and-drop upload, SFTP, or API—whatever fits your workflow.
AI-Powered Analysis
Our platform cross-references every declaration against:
- Global tariff databases (UK Global Tariff, trade agreement schedules, etc.)
- Your historical classification patterns
- Known error types (wrong HS codes, missed preferences, valuation issues)
The AI flags anomalies—declarations that don't look right based on the data.
Expert Validation
Our customs specialists review the flagged entries. We don't just say "this might be wrong"—we confirm it, calculate the overpayment, and determine whether it's recoverable under HMRC rules.
Evidence Pack Preparation
If there's a valid claim, we build the full evidence file: the original declaration, the supporting documents, the tariff justification, and the corrected entry. Everything HMRC needs to process a post-clearance adjustment or C18 demand defence.
Your report shows:
- What went wrong
- How much you overpaid
- Documents supporting the claim
- Timeline for recovery
Ongoing Monitoring
This isn't a one-time audit. We continuously monitor your CDS data so you catch errors early, before they compound. And because we're broker-agnostic, you get the same oversight whether you use one broker or ten.
The Outcome
Clients typically recover 2–4% of their annual duty spend in the first year. For a business importing £10M of goods annually, that's £200K–£400K back in working capital.
But the bigger win? Audit readiness. When HMRC comes knocking, you have a complete, indexed, defensible record of every declaration and every supporting document. No scrambling. No missing paperwork. Just evidence.
Why Global Importers Choose MyCustomsInfo®
Broker-Agnostic
We don't clear goods; we audit the people who do. No conflict of interest, just independent oversight.
Evidence-Led
We don't just flag errors; we provide the documentation to fix them. Every finding is HMRC-defensible.
Outcome-Focused
We turn compliance from a cost into a profit engine. Performance-based pricing means our success is tied to yours.
Part of a Global Platform
UK CDS is just one of 8+ customs regimes we support. If you also import into the EU, US, Canada, Australia, Singapore, or Switzerland, you get the same methodology and single dashboard across all jurisdictions.
UK CDS Success Stories
Industrial Components Importer
Manufacturing Sector • £15M Annual Duty Spend
A UK-based industrial components importer recovered £420,000 in duty overpayments over 6 months by correcting misapplied HS codes and missed preferential origin claims. Their broker had been using generic commodity codes that attracted higher duty rates than necessary. Our audit identified 340+ declarations with recoverable errors.
"The transition from CHIEF to CDS created a perfect storm of data quality issues. Brokers were learning a new system under pressure, and many clients are still paying for those early mistakes. We're seeing recoverable errors in roughly 1 in 4 CDS declarations we audit—and that's from reputable brokers who are doing their best under difficult circumstances."
Frequently Asked Questions about UK CDS Audits
How far back can we claim duty recovery in the UK?
Under HMRC rules, you can typically claim duty refunds for overpayments made within the last 3 years. However, the exact timeframe depends on the type of error and when it was discovered. Our team analyses your historical CDS data to identify all recoverable overpayments within the statutory window.
Does this replace my customs broker?
No. MyCustomsInfo® provides independent oversight of your customs operations—we don't clear goods or make declarations. Your broker remains responsible for all official filings. We provide the QA layer that ensures they're getting it right, and when they're not, we help you recover what you've overpaid.
What data do I need to provide for a post-clearance audit?
We need access to your CDS declaration data, C79 VAT certificates, Monthly Standing Summaries (MSS), and supporting documents like commercial invoices, packing lists, and certificates of origin. You can share this via secure upload, SFTP, or API—whatever fits your workflow.
How long does a UK CDS audit take?
For UK-only operations, we can deliver initial findings in as little as 48 hours with our Fast Track service. A comprehensive audit with full documentation typically takes 1-2 weeks depending on the volume of declarations and complexity of your supply chain.
Ready to Recover Your UK Duty Overpayments?
Get a complimentary assessment of your CDS data. We'll identify your recovery potential and show you exactly where the money is hiding.