Why transit movements need a guarantee
Every movement under the Common Transit Convention (CTC) carries a potential customs debt — the duty and VAT that would be due if the goods were diverted into free circulation in a CTC country instead of being properly discharged at the office of destination. To protect the public revenue, HMRC (and every other CTC customs authority) requires a transit guarantee that covers this potential debt for the duration of the movement.
The guarantee is held against the principal — the holder of the procedure — and is debited automatically when each movement is opened and credited when each movement is discharged. There are three forms of guarantee available in the UK.
Individual guarantee
An individual guarantee covers a single transit movement. It is purchased from an approved guarantor (typically a bank, insurance company, or specialist transit guarantor) for the amount of the potential customs debt on that specific consignment.
Individual guarantees are common for occasional movers — traders who run one or two transit movements a year — or for high-value, high-risk consignments where the principal does not want the movement charged against their standing CCG limit. They are administratively heavier per movement, but flexible.
Individual guarantees can be provided in three sub-forms:
- Cash deposit lodged with HMRC.
- Guarantor undertaking (often called an individual guarantee voucher).
- Comprehensive guarantee usage authorised on a one-off basis.
Comprehensive customs guarantee (CCG)
A comprehensive customs guarantee is the standard arrangement for regular transit operators. Instead of providing a separate guarantee for each movement, the principal applies to HMRC for a CCG with a single reference amount that covers the total potential customs debt across all live movements at any one time.
The advantages are significant:
- One application, one guarantee, one HMRC authorisation covering all your movements.
- Movements can be opened on demand without buying individual guarantee instruments.
- The CCG can be used across multiple procedures (transit, customs warehousing, inward processing, temporary admission) under the same authorisation.
- Real-time guarantee usage data is available through NCTS so you can see how much headroom you have.
The CCG is the right tool for any operator running more than a handful of movements per month. Most large freight forwarders and hauliers running scheduled landbridge or short-sea services hold a CCG.
Guarantee waiver for authorised low-risk traders
For traders with a strong compliance record, HMRC can authorise a guarantee waiver — either a full waiver or a reduction of the reference amount. The waiver is typically tied to Authorised Economic Operator (AEO) or comparable status, and is granted on the basis of:
- Three years' clean compliance history with HMRC.
- Demonstrated financial solvency.
- Robust internal customs procedures.
- A practical record of using transit without irregularities.
A full waiver is available for T2 movements where the goods are Union goods and the underlying customs debt risk is low. A partial reduction — for example, 50% or 30% of the reference amount — is available for T1 movements subject to the same compliance criteria.
For a trader running large volumes, a waiver can free up significant working capital. A reference amount of several hundred thousand pounds tied up in a bank-issued CCG is real money; a waiver removes that requirement.
Reference amounts: how the figure is calculated
The reference amount of a CCG is calculated as the maximum potential customs debt that could arise from all transit movements the principal expects to have open at any one time over a one-week period. The calculation is normally:
- Take the average customs debt per movement (duty + VAT).
- Multiply by the average number of simultaneously open movements over a busy week.
- Add a margin for peak periods.
HMRC will work with the applicant to agree a reasonable figure. The reference amount can be increased later if volumes grow, but a movement that would breach the reference amount cannot be opened — NCTS will reject the declaration.
This is why discharge speed matters. A movement that is discharged within 24 hours frees up its share of the reference amount immediately. A movement that sits undischarged for a week ties up its share for the full week. Operators running tight CCG limits should treat discharge reconciliation as a daily operational task.
Applying for a CCG with HMRC
The application is made on form CCG1 and submitted to HMRC's Customs Comprehensive Guarantee team. The application requires:
- The applicant's EORI number and business details.
- A description of the customs procedures the CCG will cover.
- The proposed reference amount with supporting calculation.
- A guarantor undertaking from an approved financial institution (unless a waiver is being applied for).
- Three years of financial statements.
- Details of the applicant's customs compliance history.
HMRC will typically respond within 90 days. In practice, well-prepared applications from established operators move faster than that. Applications from new entities, or from operators with recent compliance issues, take longer and may be refused.
Why discharging on time matters
The single most important operational discipline in transit is timely discharge. Every open movement consumes a slice of the reference amount, and every overdue movement triggers an enquiry procedure that, if unresolved, ends in a demand against the guarantee.
The time limit is set at the office of departure based on the routing and distance — typically a few days for a short Channel crossing, longer for movements involving multiple offices of transit. The principal must ensure:
- The driver presents the goods at the declared office of destination within the time limit.
- The office of destination accepts the goods and the discharge message reaches NCTS.
- Any delay at the office of destination — for example, queues at an inland border facility — is logged and explained.
A movement that misses its time limit is not automatically a guarantee claim, but it does open an HMRC enquiry. The principal has 28 days to provide evidence of arrival; failing that, HMRC can demand the guaranteed amount.
Talk to T2 Transit about your guarantee structure
Whether you are setting up your first CCG, applying for a guarantee waiver, or trying to optimise the reference amount you already have, T2 Transit can guide you through HMRC's application process and help you build the discharge discipline that keeps your guarantee usage low. Contact our team for a no-obligation review.