ACCOUNTING & ADVISORY FIRMS · CUSTOMS AUDIT ADVISORY

Your clients assume someone checks their customs line. Does anyone?

Customs duty is a self-assessed tax that clears silently through customs agents — and 17% of UK declarations contain errors. BorderAudit adds a post-clearance customs audit capability to your practice without customs headcount: the platform does the analysis, your firm owns the client.

Book a partner callRun a free audit on one client
Flat Partner pricing · no success fees · white-label or co-branded
THE BLIND SPOT

The tax line nobody in the engagement reviews.

UK IMPORTS · POST-CLEARANCE

Corporation tax is planned. VAT is reviewed every quarter. Customs duty — often one of the largest tax lines an importing client pays — is calculated once at the border by a customs agent and almost never looked at again. Not by the agent, not by the client, and historically not by the practice either.

▲ The assumption
FDs file customs under 'handled'
Finance directors (FDs) assume customs duty is reviewed the way VAT and corporation tax are. It sits on the P&L inside cost of goods — so nobody treats it as a tax line that can be wrong.
▲ The reality
17% of UK declarations contain errors
Customs duty is self-assessed at the border, usually by a customs agent working at speed across 4.4 million declaration lines a day. Errors clear silently — there is no bill to query, just a cost that lands slightly wrong.
▲ The liability
Your client carries the risk, not the agent
Under direct representation, the importer — your client — is legally responsible for every declaration made in their name. HMRC (His Majesty's Revenue and Customs) can revisit those declarations years after clearance.
▲ The window
The 3-year reclaim window closes monthly
Duty overpaid can generally be reclaimed up to three years from the entry. Every month a client goes unreviewed, their oldest recoverable entries expire — quietly, and for good.
THE CAPABILITY

What is customs audit advisory?

Customs audit advisory is the post-clearance review of a client's import declarations — re-checking the duty paid against the tariff classification, customs valuation and origin rules that actually applied. Because customs duty is self-assessed at the border and never re-examined unless someone chooses to look, it is the one tax line that escapes normal advisory discipline. For an accounting firm, customs audit advisory means treating it like VAT or corporation tax: recover overpayments while the three-year reclaim window is open, and correct errors before HMRC raises them.

Coverage 01
Duty overpayments
Every declaration line re-checked against the tariff classification, customs valuation and duty rate that actually applied — surfacing duty the client paid but never owed.
Coverage 02
Unclaimed reliefs & preference
Preference claims and customs reliefs the client was entitled to but never made — the gaps that quietly inflate a landed-cost line year after year.
Coverage 03
Compliance exposure
Errors that underpaid duty, flagged for correction on the client's own terms — typically voluntary disclosure — before HMRC raises them with penalties attached.
Why it never gets checked

A manual customs review means specialist headcount reading declaration lines against tariff, valuation and origin rules — a capability most practices could never justify hiring for. A post-clearance audit platform removes that constraint: the analysis is automated, the review is specialist, and the advisory stays with your firm. Read the post-clearance audit guide →

HOW IT WORKS

A customs capability without customs headcount.

Step 01 · Introduce
Your client authorises once
The client grants access to their HMRC declaration data through the Government Gateway. No spreadsheets from your team or theirs, no systems integration, no change to how they import.
Step 02 · Analyse
The platform audits every line
Automated analysis re-checks each declaration against tariff, origin and valuation rules — scoring overpayments, unclaimed reliefs and compliance gaps across the full history.
Step 03 · Review
Specialist review, your brand
A customs specialist reviews every finding before it goes anywhere. The findings report is white-label or co-branded — presented by your firm, in your client meeting.
Step 04 · Advise
You deliver the outcome
Reclaim files are prepared for HMRC — 91% are accepted first time — and compliance gaps become an advisory conversation your client remembers at renewal.
The relationship stays yours

BorderAudit works behind your practice. The findings carry your brand, the client conversations are yours, and the platform fee is flat — your advisory margin is never taxed by a success fee.

SEE HOW CLIENT AUDIT READINESS IS SCORED →
PROOF

Advice your client can put a number on.

UK CUSTOMS · FIGURES TO DATE

A mid-size fashion retailer — exactly the profile sitting on most practices' client lists — recovered £144,000 in overpaid duty after BorderAudit analysed two years of its HMRC declaration data. The reclaim was accepted by HMRC first time. When you can open a client review with a number like that, the customs line stops being invisible.

£4.7M
Recovered for UK importers
91%
HMRC first-time acceptance
17%
Of UK declarations contain errors
200+
Businesses on the platform
SEE HOW DUTY RECLAIMS ARE PREPARED →
TWO WAYS IN

Prove it on one client, or build the service line.

START WITH ONE CLIENT

Test the capability on a single client file.

✓Free eligibility check — two minutes, no data upload
✓Full audit of the client's HMRC declaration data, free to start
✓Findings you can take into the next client review meeting
✓No commitment from the practice
FOR THE PRACTICE

Make customs part of the service line.

✓Partner tier: one flat platform subscription for the practice
✓White-label or co-branded reports — your letterhead, our engine
✓No success fees, ever — your advisory pricing is your business
✓Specialist review behind every finding
MORE ON THE PARTNER MODEL →
BOOK A PARTNER CALL

Bring one client in mind.

A short call with the team: how the platform audits a client's HMRC declaration data, what a white-label findings report looks like on your letterhead, and what flat Partner pricing means for your advisory margin. Bring one importing client in mind — anonymised is fine — and we'll talk through what an audit would cover.

●Flat Partner pricing, in writing
●White-label report walkthrough
●No obligation on the practice

Rather see it work first? Run a free audit on one client →

FAQ

Customs for accountants, answered.

Customs audit advisory is the post-clearance review of a client's import declarations — re-checking the duty they paid against the tariff classification, customs valuation and origin rules that actually applied. Customs duty is a self-assessed tax: it is calculated at the border, usually by a customs agent, and rarely examined again. Customs audit advisory treats that line with the same discipline as VAT or corporation tax — recovering overpayments while the three-year reclaim window is open and correcting errors before HMRC raises them.

Add customs to the practice. Skip the headcount.

The platform audits every client declaration line; a customs specialist reviews every finding; your firm owns the client and the advisory. Flat Partner pricing — never a success fee.

Book a partner callborderaudit.io