TSS Bulletin 227th Edition

Published: 10 September 2026|Bulletins

Final reminder: Assisted Completion Service (ACS) closes to new requests on 15 September
The outgoing Trader Support Service: key dates and actions
Closing your Supplementary Declarations: actions to take now
Netcompany update: Access the new TSS service early: Sign up for the private beta by 20 September
HMRC update: EU Deforestation Regulation (EUDR) and Northern Ireland movements
Customs Duty Waiver Scheme users: confirm beneficiary details from 14 September

Welcome to this fortnight’s bulletin. Countdown: new TSS goes live in 6 weeks – what you need to do now

Final reminder: Assisted Completion Service (ACS) closes to new requests on 15 September

The Assisted Completion Service (ACS) will close to new requests on 15 September 2026.

If you need ACS support, you need to act now. With just days remaining, any eligible traders who require assistance to complete their Supplementary Declarations should submit their request as soon as possible. Capacity is limited and support cannot be guaranteed, particularly for requests received close to the closure date.

If you already have an ACS case open, please provide any outstanding onboarding templates, supporting documents or requested information without delay. We cannot progress cases until all required information has been received.

Please do not submit duplicate ACS requests for the same declaration, as this may cause unnecessary delays.

After 15 September 2026, new ACS requests will no longer be accepted. You will remain responsible for completing and submitting your Supplementary Declarations and paying any duties due.

Support continues to be available through TSS guidance, the ‘Get Help’ function in the TSS Portal, and the TSS Contact Centre on 0800 060 8888.

The outgoing Trader Support Service: key dates and actions

The Trader Support Service (TSS) will move to a new platform and provider on 20 October 2026. Preparing for this transition is vital and this article sets out the key deadlines and steps your business can take on the outgoing TSS to prepare.

Summary of key deadlines for the outgoing TSS

You will be unable to pre-lodge declarations on the outgoing TSS for goods movements with an arrival date on or after 20 October 2026
For goods movements with arrival dates on or after 20 October 2026, you must submit declarations through the new TSS only
Access to the outgoing TSS will end on the 30 November 2026. You should download any information you need before this date

Further actions to take now

Check your Company Profile in the outgoing TSS and make sure the following information is accurate and up-to-date ahead of its migration to the new TSS:
- Company details such as business addresses and EORI numbers
- Primary user information
- The list of existing users, including deactivating accounts that are no longer required
- Contact information, including valid email addresses
- Authorisations such as UK Internal Market Scheme (UKIMS), Northern Ireland Retail Movement Scheme (NIRMS) and Simplified Customs Declaration Processes (SCDP)
- UKIMS and Trader Goods Profile (TGP) access permissions
- Agent and intermediary relationships
- Payment information

Continue to check the Terms and Conditions in the outgoing TSS for updates during its final weeks

Access and secure your data: assess the documents and information held on the outgoing TSS. Access will end on the 30 November 2026, so download any information you need before this date.

Closing your Supplementary Declarations: actions to take now

Supplementary Declarations must be submitted by the tenth calendar day of the month following your goods movement.

As mentioned above, the outgoing TSS will move to a new platform on 20 October 2026. You will continue to have access to the outgoing TSS until 30 November 2026. Before access ends, you must review and close all outstanding Supplementary Declarations.

Actions to take

A declaration is not complete until it shows as Closed on the TSS Portal, so check each open declaration to identify what is stopping it from closing and take the necessary action.

To find your outstanding Supplementary Declarations in the TSS Portal, go to Goods Movements > View a Goods Movement, then select Supplementary Declarations (by consignment) from the Type filter.

Declarations in the statuses below have outstanding requirements and need your attention. You should prioritise the oldest items using the date filters:

‘Draft SUP Declarations’

Complete all mandatory fields, check the movement information is correct and then select Submit

‘Input Required SUP Declarations’

Open the consignment, correct the error shown, update the declaration and select Reprocess. For more details on error codes, see the Guidance on resolution to common error codes for Supplementary and Full Frontier Declarations guide on NICTA

‘Pending Payment SUP Declarations’

Make the VAT and/or duty payment or ensure your Duty Deferment Account (DDA) has sufficient funds, so that the declaration can move to Closed. See the Payments Guide on NICTA for more information on available methods of payment and what payments you may need to make

‘Tax Calculation Verification Declarations’

Review the Customs Declaration Service (CDS) calculation and select Accept Calculation, or Recall to Draft if amendments are needed, then resubmit promptly

‘Fiscal Hold SUP Declarations’

Make funds available immediately. This status will remain until there are sufficient funds for VAT and/or duty to be collected

It will not be possible to submit new movements with arrival dates of 20 October 2026 onwards through the outgoing TSS. However, you should keep checking the TSS Portal, including Post-Movement To-Dos and Post-Movement Submission Status, up to and including 30 November 2026 to ensure all your outstanding Supplementary Declarations are Closed.

See the Supplementary Declarations: Step-by-Step Guide and the Payments Guide on the NICTA website for more details.

The following article was provided by Netcompany.

From 6 October 2026, you can start using the new TSS for any new movements where the arrival date is 20 October and onwards. No new movements can be made in the outgoing TSS service from 20 October.

Traders can join the new service early by signing up for private beta. This will allow you to become familiar with new features and functionality, as well as start making declarations before go-live on 20 October. You’ll receive dedicated support throughout onboarding and during your participation in the private beta. Your feedback will help us improve the service.

Features you can already use in private beta include:

a digital assistant, available at any time to answer questions, raise a support case, or refer you to a live adviser during opening hours
co-browsing, which allows an adviser to securely view your screen, with your permission, and guide you through the process in real time
EORI validation, which validates your EORI number in real time as you complete your declaration

More features will be introduced in the new service over the coming months, including reporting tools, declaration templates and CSV uploads to help you submit declarations in bulk more quickly.

We recommend signing up for private beta using the online form by 20 September.

If you have any questions, call the contact centre for the new service on 0800 870 8173 from 8am to 5:30pm, 7 days a week.

HMRC update: EU Deforestation Regulation (EUDR) and Northern Ireland movements

The following article was provided by HM Revenue & Customs (HMRC).

Background

On 23 June 2026, HM Government (HMG) announced its approach to deforestation regulations across the UK.

A mandatory due diligence framework for timber has been in place across the UK since 2013. HMG now intends to build upon this to further decouple UK consumption from global deforestation.

HMG aims to require businesses in Great Britain (GB) with an annual turnover of over £1 million that use forest-risk commodities and wood products to carry out due diligence to ensure these are produced in compliance with relevant local laws. HMG will consult businesses, civil society and international partners on the substance of the proposed GB deforestation policy.

HMG has also announced that the EU Regulation on Deforestation-free Products (EUDR) will apply in Northern Ireland (NI). HMG aims to make sure that measures in GB operate consistently alongside the EUDR to support HMG’s commitment to protect the UK internal market and support export-led growth.

What is EUDR?

EUDR is designed to reduce the contribution of global supply chains to deforestation and forest degradation.

The regulation applies to a range of commodities and products associated with deforestation risk, including cattle, cocoa, coffee, palm oil, rubber, soya and wood, as well as certain products derived from those commodities.

Businesses placing relevant goods on the European Union (EU) or NI market, or exporting them from NI, may be required to demonstrate that those products are deforestation-free and have been produced in accordance with the laws of the country of production.

To meet these requirements, businesses may need to undertake due diligence on their supply chains and submit a Due Diligence Statement (DDS) through the European Commission’s EUDR Information System. Once validated, the DDS generates a unique reference number which may need to be included as part of customs information provided to HMRC.

The DDS is an EUDR compliance requirement and operates alongside existing customs processes and facilitations. It does not replace customs requirements, and nor does it change the customs route available for a movement.

Guidance for those moving, exporting or placing products on the NI market is available here.

At a glance: when does EUDR apply?

The date from which EUDR requirements apply depends on the size of the business and the products being traded.

Business type	EUDR application date
Large and medium-sized businesses	30 December 2026
Micro and small primary operators already subject to the EU Timber Regulation (EUTR)	30 December 2026
Other micro and small primary operators	30 June 2027
Certain newly added palm oil-derived products (including specified soap, hygiene) and soluble coffee products	30 December 2027

Businesses should identify whether the products they trade are within the scope of EUDR and understand when the relevant obligations begin to apply.

Where EUDR applies, businesses may be required to undertake due diligence and submit a DDS in the EUDR Information System before placing goods on the NI or EU market, or before exporting relevant goods from NI.

Key takeaways

The EUDR will apply in NI as part of arrangements which ensure NI’s unique access to the EU single market is maintained
Access to the EU single market is particularly vital to NI’s agricultural sector, which relies on privileged access to cross-border supply and processing facilities on the island of Ireland. At the same time, HMG’s confirmation that it will deliver an approach that operates consistently alongside the EUDR in GB provides assurance that the UK internal market is also protected. This ensures the dual market access upon which NI businesses depend is maintained
Further technical customs guidance will be published ahead of implementation, including declaration completion instructions and operational processes for specific facilitations

Customs Duty Waiver Scheme users: confirm beneficiary details from 14 September

From 8:00am on 14 September 2026, undertaking administrators must log into their Customs Duty Waiver online service account and follow the instructions to confirm beneficiary details for every business in their undertaking. This will include one of the following:

Company Registration Number
VAT Registration Number
Charity Registration Number
National Insurance Number

To comply with new legal requirements, you must complete this process by 25 September 2026. If beneficiary details have not been confirmed by an administrator for all relevant businesses by this date, none of them will be able to use the Customs Duty Waiver Scheme (CDWS). The process for claiming a customs duty waiver will not change.

If you believe any beneficiary details are incorrect, contact HMRC as soon as possible at [email protected].

Why is this required?

HMRC is required to comply with relevant legal requirements on state aid. Updated legal requirements on state aid will mean that limited information on ‘de minimis’ state aid granted under the CDWS will need to be recorded in a register and made publicly accessible. This legal requirement is aimed at ensuring transparency of state aid awards.

The limited information relating to de minimis aid awards that must be recorded by HMRC and published is:

the beneficiary’s name
the relevant beneficiary identifier
amount of aid granted (the value of the customs duty waiver, which may in future account for adjustments)
date the aid was granted (the date of the waiver)
granting authority (in the case of the CDWS, this is HMRC)
type of aid instrument (for the customs duty waiver, this will always be Tax Advantage or Tax Exemption)
economic sector of the undertaking (NACE classification)

Where a National Insurance Number is used, it will be pseudonymised in the public register in line with applicable data protection requirements.

Members as well as undertaking administrators can also log in to view: