How to Apply for Inward Processing Relief in the UK — A Step-by-Step Guide
KEY TAKEAWAY
Inward Processing Relief allows UK businesses to import goods, process or manufacture them, and pay import duty only on the portion sold into the UK market — or pay nothing at all if the finished goods are re-exported. Applying requires an HMRC authorisation through the Customs Declaration Service. This guide covers every step.
If your business imports raw materials, components, or semi-finished goods for manufacturing, processing, or repair — and then either re-exports the finished product or sells part of it back into the UK — Inward Processing Relief could be saving you significant amounts in import duty and VAT right now.
The challenge is the application. Many businesses know IPR exists but either assume it is too complex to bother with, or attempt the application without proper preparation and find themselves rejected or delayed by HMRC. This guide walks through the entire process, from checking your eligibility to maintaining compliance once authorised.
What is Inward Processing Relief and who is it for?
Inward Processing Relief is an HMRC customs special procedure that suspends import duty and import VAT on goods brought into the UK temporarily for processing. The suspension lasts for the duration of the authorisation period — typically between one and three years — and duty only becomes payable on goods that are released into free circulation (i.e. sold into the UK market) at the end.
IPR is designed for businesses that:
Import raw materials or components to manufacture a finished product
Import goods for repair or refurbishment before re-exporting
Import goods for processing where some or all of the output will be exported
Use the Duty Inversion method — where the finished product attracts a lower duty rate than the raw materials
If you manufacture in the UK using imported materials, or if you repair goods brought in from overseas clients, IPR almost certainly applies to your operation. The key question is not whether you are eligible — most manufacturers are — but whether your internal systems are in a state to support an application.
Before you apply: eligibility and pre-application checks
HMRC will assess your application against a defined set of eligibility criteria. Working through these before you submit will significantly improve your chances of a clean, undelayed approval.
Economic conditions test
For most applications, HMRC requires you to demonstrate that IPR is in the economic interest of UK processing — in other words, that using IPR does not unfairly undercut UK producers of equivalent goods. In practice, this test is either automatically met for most commodity types, or HMRC will assess it as part of your application. Your consultant or agent can confirm whether your specific goods require a formal economic conditions assessment.
Customs compliance record
HMRC will check your compliance history. Businesses with recent customs penalties, outstanding debts, or a history of declaration errors will face additional scrutiny. If your record has issues, address them — ideally through a voluntary disclosure — before submitting.
Record-keeping readiness
This is where most applications run into problems. HMRC requires that you can account for every unit of goods entering and leaving your IP procedure. Your systems must be able to:
Track goods from import entry through production to export or home use
Produce a Bill of Discharge (BoD) on a quarterly basis
Reconcile commercial and customs records at the line level
Identify yield rates and wastage for manufacturing processes
If your current systems cannot do this, you need to address it before applying — not after. Receiving an authorisation you cannot operationally comply with creates significant HMRC risk.
Not sure if your business qualifies for IPR or whether your systems are ready? We offer a free gap analysis before any application.
Book a free consultationThe IPR application process — step by step
Step 1: Define your procedure and commodity scope
Before you apply, you need to define exactly what goods you are importing, under which commodity codes, and what process they will undergo. This forms the core of your application narrative. Be specific — vague applications attract more HMRC queries and extend your timeline.
You also need to decide which type of IPR you are applying for:
Suspension system — duty is suspended entirely until goods are discharged. This is the most common type.
Drawback system — duty is paid on import and reclaimed when goods are re-exported. Less common and less cash-flow efficient.
Almost all businesses benefit from the suspension system. There are limited circumstances where drawback is preferable, usually where goods are sold to a third party who then re-exports them.
Step 2: Apply through HMRC's Customs Declaration Service (CDS)
IPR authorisations are applied for through the Customs Declaration Service. The application requires your EORI number, details of the goods and processes involved, evidence of your record-keeping systems, and an estimate of your annual throughput volumes.
HMRC will assess the application and may issue a Supplementary Authorisation Request — a set of follow-up questions that must be answered promptly to avoid delays. Response times on these queries directly affect your overall timeline. Applications with slow responses can take six months or more; well-prepared applications with fast responses typically achieve authorisation in eight to twelve weeks.
Step 3: Respond to HMRC queries thoroughly
Nearly all IPR applications receive at least one round of HMRC queries. These typically concern one of three areas:
Clarification of the process being undertaken and the relationship between imported goods and finished products
Evidence of your record-keeping systems and how you will track goods through the procedure
Your proposed Bill of Discharge methodology and submission schedule
Respond to every query in writing, with clear and specific answers. Vague responses invite further questions. If HMRC asks how you will track yield rates, provide a specific answer with reference to your actual systems — not a general description of what you intend to implement.
Step 4: Implement your IP record-keeping framework
Your authorisation will specify the conditions you must comply with. Before the authorisation goes live, you must ensure your internal systems can meet those conditions. At a minimum, you need:
A dedicated IP stock account or ledger tracking goods entering and leaving the procedure
A process for connecting each import entry to specific production batches
A yield calculation methodology agreed with your operations team
A Bills of Discharge preparation process — who does it, how often, where records are held
A process for reporting any deviation from expected yield or any lost, damaged, or stolen goods
Step 5: Submit your first Bill of Discharge
Once trading under IPR, Bills of Discharge must be submitted to HMRC quarterly, showing all goods that entered and left the procedure during the period. The BoD reconciles your imports against your exports and home-use entries, and accounts for any waste or yield loss.
The first BoD is often the hardest. If your systems were not fully ready at go-live, the first quarter's reconciliation will expose gaps. It is better to identify and resolve these with your consultant before submission than to have HMRC raise queries on a submitted BoD.
Common reasons IPR applications are delayed or refused
| Issue | What HMRC looks for instead |
|---|---|
| Record-keeping systems cannot produce a Bill of Discharge | Specific systems with named processes, not aspirational descriptions |
| Yield rates not defined or evidenced | Historical production data showing input-to-output ratios |
| Economic conditions not addressed | Evidence that IPR use does not undercut UK producers |
| EORI or company details inconsistent | Exact match between CDS records and application entity |
| Slow responses to HMRC queries | Prompt, thorough replies — every delay extends the timeline |
| Compliance history issues undisclosed | Proactive disclosure with remediation evidence |
Maintaining IPR compliance once authorised
An IPR authorisation is not a one-time administrative task. Compliance is ongoing and HMRC monitors authorised businesses actively. Key ongoing requirements include:
Quarterly Bills of Discharge submitted accurately and on time
Notifying HMRC immediately of any material changes to your processes, premises, or ownership
Maintaining all IP records for a minimum of four years after the procedure closes
Ensuring your declaration agent submits correct procedure codes on all IP import entries
Monitoring your throughput period — goods must exit the procedure within the authorised timeframe
HMRC can conduct an IPR audit at any point during the authorisation period. If you cannot account for goods that entered the procedure, HMRC will demand the full suspended duty and VAT immediately — often for multiple years of entries. This is not a theoretical risk; it is a routine outcome of poorly managed IPR.
How much can IPR save your business?
The saving depends entirely on your volumes, commodity codes, and re-export ratio. As a reference point, a UK manufacturer importing £500,000 of raw materials annually at an average 4% duty rate is paying £20,000 per year in import duty. If 70% of finished goods are exported, IPR eliminates £14,000 of that liability — immediately, every year, with no reduction in competitiveness.
For businesses with higher duty rates, larger volumes, or near-total re-export ratios, the numbers scale significantly. The application cost is a one-time investment. The saving compounds annually for as long as the authorisation is in place.
Readyset manages the full IPR application process — from initial gap analysis through to authorisation and ongoing BoD compliance.
Should you use a consultant or apply alone?
You can apply for IPR without a consultant. HMRC's process is documented and the application form is accessible. However, the failure rate for unassisted applications — particularly at the record-keeping evidence stage — is high, and a delayed or refused application means months of continued duty payments that IPR would have suspended.
A specialist consultant does three things that the average unassisted applicant cannot easily replicate: they know exactly what HMRC is looking for at each stage, they can pre-empt queries before they are raised, and they can close the gap between your current record-keeping state and what the authorisation requires — often before the application is even submitted.
The question is not really whether to use a consultant — it is whether the duty savings justify the cost of getting expert help. For any business paying more than £5,000 per year in import duty on goods that could qualify for IPR, the answer is almost always yes.
