Why You Need a Guarantee
A transit declaration suspends duty and import VAT while the goods move under customs control. But customs authorities need to be sure that, if the movement goes wrong — goods diverted, never arriving at the destination, not properly accounted for — they can still collect the duty that would have been due.
The transit guarantee is the financial backing that makes that possible. It is a legally binding undertaking, usually from a bank or surety, that the duty at risk is covered.
Without an active, valid guarantee reference attached to the declaration, NCTS will not release the movement. There is no "I'll sort it out later" route.
The Three Main Types
There are three main flavours of guarantee under the Common Transit Convention:
- Individual guarantee — covers a single movement.
- Comprehensive Guarantee (CGU) — covers many movements over a period.
- Guarantee waiver — covers everything for an authorised, low-risk trader, with no specific instrument.
A fourth, narrower option — the flat-rate cash deposit — is also possible for individual movements, but is rare in practice for commercial operators.
Individual Guarantee
An individual guarantee is set up for one transit movement only. Once that movement is discharged, the guarantee is released. The amount must equal 100% of the duty and VAT at risk for that movement.
Individual guarantees can be provided as:
- A cash deposit at the Office of Departure
- A guarantee voucher (TC32) purchased from an approved guarantor
- A bank-issued guarantee specific to that movement
This is the right model for occasional users — a trader who does one or two transit movements a year and doesn't want the overhead of a full CGU. It's also the natural model when the at-risk amount on a single movement is unusually high and would otherwise eat into a CGU's headroom.
Comprehensive Guarantee (CGU)
A CGU is an umbrella guarantee for a regular transit user. The holder is authorised by HMRC (or the equivalent in another country) to use the guarantee for any number of transit movements, up to a reference amount that represents the duties at risk across all open movements at any one time.
When a movement is opened in NCTS, the at-risk amount is "drawn down" from the available headroom under the CGU. When the movement is discharged, the headroom is restored.
A CGU is the right model for any business doing more than a handful of transit movements a year. It is faster to file (no per-movement guarantee admin), and the financial security model is more efficient — you only need to cover your peak open exposure, not the sum of every movement you ever do.
CGUs come in several reduction levels (100%, 50%, 30%, 0% in some cases) based on the holder's compliance record and authorisations. AEO status, for example, unlocks lower CGU coverage.
Guarantee Waiver
A guarantee waiver is the strongest authorisation. The holder is treated as low-risk enough that no specific guarantee is required at all — they declare under their authorisation, and the customs authority accepts the discharge risk.
In practice, waivers are reserved for AEO-authorised operators with a strong compliance record, and even then often only for specific categories of goods. Most operators will not qualify for a full waiver and should plan around a CGU instead.
How We Handle Guarantees for Clients
At Transit Declaration we offer three options:
- Use our CGU. We act as declarant under our own Comprehensive Guarantee. You get full transit cover with no need to set up your own guarantee, in exchange for a small per-movement fee against our headroom. This is by far the most common setup for clients who do not have their own CGU.
- Use your CGU. If you hold your own Comprehensive Guarantee, we act as your authorised representative and declarant against it. We monitor headroom and let you know if a planned movement risks breaching the reference amount.
- Individual guarantee. For one-off, high-value movements or for clients who simply don't want a CGU relationship, we'll arrange individual cover.
Common Pitfalls
A few patterns we see repeatedly:
- Insufficient reference amount. Traders set up a CGU based on average movements and then book a single high-value shipment that exceeds the available headroom. The declaration fails on submission, and the goods sit at the dock while the headroom is sorted.
- Stale authorisation. Authorisations need to be reviewed periodically. A waiver granted on the back of strong compliance can be reduced or withdrawn if compliance slips.
- Unclosed movements eating headroom. Every open transit movement holds drawn-down headroom under the CGU until it discharges. A backlog of un-discharged movements can quietly choke a CGU's available cover. Active monitoring is essential.
In Summary
- Occasional movements → individual guarantee
- Regular operations → Comprehensive Guarantee (CGU)
- Top-tier compliance → consider a waiver as a longer-term goal
- All of the above → we can run them on your behalf
If your guarantee setup is starting to feel tight, or you simply want to outsource the whole transit operation, get in touch and we'll review your setup with you.