C79 Certificate: How to Check and Reclaim Import VAT

A C79 is HMRC's monthly import VAT certificate, and it is the evidence that supports reclaiming import VAT as input tax in box 4 of a VAT return. A duty deferment statement is not that evidence. Neither is the import VAT line on the freight forwarder's invoice. Those two documents tell you what was paid and by whom; only the C79 records what HMRC has credited as import VAT against your EORI number, and only that certificate will satisfy an inspector asking what supports the claim.

Where the figures land is equally specific. The import VAT itself goes in box 4 as input tax. The value of the goods goes in box 7. The duty on the same consignment goes nowhere on the return at all, because duty is not VAT.

Certificates are published in the Customs Declaration Service financial dashboard each month, usually by the 10th working day, covering the previous month. They can only be accessed there for 6 months from the date of publication. Nothing arrives in the post and nothing is emailed, so a certificate that is never downloaded is a reclaim that quietly ages out.

The reason a C79 needs checking rather than simply adding up is structural. Its entries are built from the customs declarations your forwarder or clearing agent submitted, not from your purchase ledger. The certificate is a record of what was declared in your name, which is not automatically the same as what your business actually imported, and not the same as what you were invoiced for. Declarations are made by third parties under time pressure at the border, using an EORI number typed into a field. Bookkeepers who handle importers describe C79s as notoriously inaccurate for exactly this reason, and the correction runs one way: every line on the certificate should be matched to the corresponding freight forwarder invoice before the VAT is claimed.

That matters beyond tidiness, because when HMRC inspects an importer's VAT records the test is whether the certificate matched what was processed in the ledger. A total that happens to agree, supported by nothing, is not the same as a reconciled month.

If you have arrived here with a specific problem rather than a definition, it is probably one of a short list. The C79 certificate does not agree with your forwarder's invoices. A consignment you know you imported is absent from it. Goods that are not yours have appeared on it. You cannot work out whether to reclaim from the certificate, the forwarder's invoice or the deferment statement. Or a C79 and a postponed VAT statement have both landed in the same VAT period and you need to split them without claiming anything twice. Each of those has a cause and a fix, and each of them is worked through below.

The Import Document Chain: Entry, Forwarder Invoice, C79 and Deferment Statement

Four documents cover a single consignment, and each one exists for a different reason.

The customs entry, still widely called the C88 or SAD, is the declaration itself. It states what the goods are, what they are worth, whose EORI number they are being imported under, and what duty and import VAT are due. Acceptance of that entry generates an import entry reference, and everything downstream hangs off it.

The freight forwarder's or clearing agent's invoice is a recharge document. The forwarder has paid duty and import VAT to HMRC on your behalf at the border and billed you for it, along with its own clearance and handling services. It is a purchase invoice from a supplier, and it is the only one of the four that arrives through the normal purchase ledger route.

The C79 is HMRC's monthly certificate of import VAT recorded as paid against your EORI number. It is built from accepted declarations, not from anything your forwarder sends you.

The duty deferment statement is an account statement. If your business holds a deferment account, the statement lists the duty and import VAT deferred through it during the period and the total collected. It proves the money moved. It does not prove entitlement to reclaim, because it says nothing about which VAT HMRC has recorded against your EORI as import VAT rather than duty. Stated in operational terms: claim from the deferment statement and you are claiming from a bank-style statement of an account, a document that includes duty you cannot reclaim at all.

Deferment mechanics matter here only as far as timing. A deferment account gives roughly a month's credit on duty and import VAT, carries its own monthly statement, and is collected by direct debit on the 15th of the month following the accounting period, or the next working day where the 15th falls on a weekend or bank holiday. Many small importers never see one of these, because the forwarder clears the goods on the forwarder's own deferment account and recharges the cost. That arrangement is normal and it does not affect the reclaim, provided the declaration carried your EORI number: you get no deferment statement, but you should still get the C79.

The fields that make matching possible

Reconciliation is only workable if you know which fields appear on more than one document. In practice there are four.

• The import entry reference (the entry number, its date and the declaring agent's identifier) is the primary match key. It is the one value that appears on the customs entry, on a properly itemised forwarder invoice and on the C79.
• The EORI number the declaration was made under determines whose certificate the VAT lands on, which makes it the first thing to check when a consignment is missing.
• The VAT amount is a secondary key, useful for confirming a match and unreliable for making one.
• The declaration acceptance date determines which month's certificate the entry appears on, which is not necessarily the month of the invoice or the month the goods arrived.

A C79 line itself is sparse: the entry reference and date, the declaring agent, the VAT amount, and little else. There is no supplier name, no purchase order number and no goods description on it. Nothing on the certificate looks like anything in your purchase ledger, which is precisely why the match has to run through the entry reference. A C79 cannot be reconciled by recognising suppliers, and attempts to do it that way tend to end with the conclusion that the certificate is wrong.

One step further upstream sits the commercial invoice from the overseas supplier, which sets the value declared to customs and therefore the duty and import VAT calculated on it. An error there propagates through the entry and onto the certificate without anyone in the chain querying it, which is why UK commercial invoice requirements for customs are worth getting right at the point of purchase rather than at the point of reclaim.

How to Download Your C79 from the Customs Declaration Service

Certificates sit in the Customs Declaration Service financial dashboard. Access is through the Government Gateway user ID and password the business used when it first subscribed to CDS, which is a narrower condition than it sounds. A different Gateway ID will sign in perfectly happily and show an empty dashboard: the ID used for filing VAT returns is not necessarily the CDS one, and an accountancy practice's own credentials are not the client's. A missing certificate is very often a wrong login rather than a missing certificate.

The Customs Declaration Service has replaced CHIEF for import and export declarations, and with it the green paper certificate that used to arrive in the post. Nothing is sent out now, so somebody has to go and collect the certificate every month. That change is responsible for a great deal of the import VAT that has gone unreclaimed since the migration.

The retrieval window is short and it is absolute. According to HMRC's guidance on getting your import VAT certificates, certificates are published each month, usually by the 10th working day, and a statement can only be accessed for 6 months from the date it is published. Statements older than 6 months are archived and must be requested from HMRC separately rather than downloaded on demand.

The practical consequence deserves stating bluntly, because it has real money attached. A practice that picks up a new importer client in March and starts reviewing the previous year's VAT position will find that anything published before roughly the previous October is no longer sitting in the dashboard. It can still be requested, but a request takes time you will not have at a filing deadline. Download every certificate as it publishes and store it locally. Retrieving on demand works right up until the month it does not.

The same dashboard carries duty deferment statements and postponed import VAT statements alongside the C79. If your consignments clear by more than one route, collect all of the month's statements in a single visit rather than returning for the second one when a variance forces the issue.

There is an access prerequisite that catches practices in particular. The certificate sits under the importer's own CDS subscription, so an external accountant or bookkeeper needs either their own authorised access or a copy supplied by the client each month, and neither happens reliably by accident. Assign retrieval to a named person with a fixed date in the month-end calendar rather than leaving it to whoever notices the return is due.

How to Code the Four Line Types on a Freight Forwarder's Invoice

A single clearance invoice usually mixes four distinct things with four different VAT treatments, and the invoice's own layout rarely distinguishes them. Coding it as one VATable purchase, or reclaiming whatever VAT figure appears on it, produces errors that run every month until somebody reconciles a certificate and finds them.

The forwarder's own fees. Clearance, entry, handling, port charges levied by the agent, storage, admin: these are a standard-rated supply of services to your business. The VAT on them is ordinary input tax, reclaimable in the normal way on the strength of the forwarder's own VAT invoice, and it has nothing whatever to do with the C79. This is the only VAT on the document you reclaim from the document itself. Because that reclaim depends on the invoice qualifying as a VAT invoice, it is worth knowing what HMRC requires on a valid UK VAT invoice before accepting a forwarder's summary billing as sufficient.

Customs duty. The forwarder paid it to HMRC on your behalf and is recharging it at cost. It is a disbursement. It is not VAT, it is not reclaimable as VAT under any circumstances, and it belongs in the cost of the goods or in an import duty expense account. Duty coded to a VAT control account is a straightforward overstatement of input tax, and it is a common one because the duty and the VAT sit next to each other on the invoice in similar-looking columns.

Import VAT. Also a disbursement, also recharged at cost, and this is where the money gets lost. The recharge line carries no VAT of its own, and the amount is reclaimable only on the evidence of the C79, never on the strength of the forwarder's invoice. The mechanism is worth being precise about: the forwarder is not making a VATable supply of that amount to you. It is passing on a tax that HMRC has already recorded against your EORI number, and HMRC will evidence that through the certificate. Reclaiming it here and again at reconciliation is the double claim, and it starts with this line.

International transport. Freight to the point of import is commonly zero-rated, so the transport line often carries no VAT at all while the clearance fee immediately beside it carries VAT at the standard rate. A zero-rated line and a standard-rated line on the same invoice is correct, not an error to query with the forwarder.

The coding consequence follows directly. The only VAT you reclaim from a forwarder's invoice is the VAT charged on the forwarder's own services. Duty passes through as a cost. Import VAT passes through as an amount recoverable from HMRC once the certificate confirms it, which is a receivable, not input tax.

Reading an invoice that does not label its lines

Most forwarder invoices do not present themselves this neatly. Three checks will usually resolve an ambiguous line:

• Does the amount have VAT added on top at the standard rate? Then it is a supply to you, and that VAT is yours to reclaim.
• Does the amount match a figure on the customs entry exactly? Then it is a disbursement being passed through, whether it is duty or import VAT.
• Is the invoice's stated VAT total roughly a fifth of the fee lines, or is it a large number closely matching the import VAT? A large figure is a recharge appearing in the wrong column, not output tax the forwarder has charged you.

One condition sits underneath all of this. A genuine disbursement is a payment made as your agent, on your behalf, recharged at exact cost. If the forwarder marks up the duty, or bundles it into a composite service fee, it stops qualifying as a disbursement and the treatment of that amount changes. This is the practical reason to insist on an itemised invoice showing the entry reference, the duty and the import VAT separately. A forwarder invoice that reads "import charges: £4,180" cannot be coded correctly by anyone, and it cannot be reconciled to a certificate at all.

How to Reconcile the C79 to Your Freight Forwarder Invoices, Line by Line

The workflow experienced bookkeepers use is simple to state: process the import agents' invoices as they arrive, coding each line type as set out above, then check every entry against the C79 when it turns up the following month. The ledger is never held open waiting for a certificate. The certificate is used to verify what has already been posted, and to release the import VAT for reclaim.

The layout is one row per customs entry, not one row per invoice. Six columns do the work:

• Import entry reference
• Entry or acceptance date
• Forwarder invoice number that recharged it
• Import VAT per the forwarder invoice
• Import VAT per the C79
• Difference

A month with 40 consignments gives you 40 rows, and every row should net to nil.

Match on the import entry reference first. It is the only field that appears on both sides, and it is unambiguous. Where the forwarder's invoice omits it, fall back to entry date plus VAT amount, and where that combination is ambiguous, ask the forwarder for the entry documents rather than guessing. Matching on amount alone is unreliable in any business that imports repeat orders, because two consignments in a month carrying identical VAT is common rather than exceptional.

A reconciliation is complete when two conditions hold, not one. The total import VAT on the C79 equals the total import VAT recharged on the month's forwarder invoices, and every individual line on both sides is accounted for. A total that agrees while individual lines do not is not reconciled. Offsetting errors are frequent, they have different causes, and each one is a separate exposure: an entry belonging to another business cancelling out a consignment of yours that was declared under the wrong number produces a perfect total and two real problems.

What you are left with is the control. The reconciled C79 total is the figure supporting the import VAT element of box 4, and the working paper behind it is what HMRC asks to see at inspection.

For a business clearing three or four consignments a month, this is twenty minutes with the certificate open beside the ledger. The effort scales badly in one specific place, and it is not the comparison. An importer clearing dozens of consignments across two or three forwarders spends the time assembling the sheet, because the certificate side arrives as a downloadable list while the invoice side is scattered across a batch of PDFs, each laying out its entry reference, duty and import VAT differently. Getting those figures into columns is what turns a half-day exercise into a short one, and it is the same problem AI-powered invoice data extraction exists to solve: upload the month's forwarder invoices, describe the fields you need in plain language, and get back a spreadsheet.

The prompt is a sentence or two naming the entry reference, invoice number, invoice date, duty, import VAT and the forwarder's own fee, one row per consignment, and it can be saved so next month is a re-upload rather than a rebuild. The spreadsheet that comes back pastes in beside the certificate lines, and every row carries a reference to its source file and page, so a queried figure traces back to the original invoice without hunting through the folder.

What to Do With Each Type of Variance

Rows that do not net to nil fall into a small number of patterns, and each pattern has its own diagnosis.

A C79 line with no matching forwarder invoice. Three causes, in rough order of frequency: the consignment was invoiced in a different month and the invoice is sitting in the next period; a second forwarder made the declaration and its invoice has not reached the ledger; or goods declared under your EORI number are not yours at all. The first two resolve themselves against the following month's invoices. The third does not, and it is identified the same way as the others, by quoting the entry reference to the declaring agent and asking for the entry documents. Those documents name the consignee and the goods, which settles the question immediately.

A forwarder invoice showing import VAT with no C79 line. Most often this is timing, and it clears on the next certificate. Where it does not clear, the cause is almost always the wrong EORI on the declaration, which is dealt with below.

Amounts that differ on a matched line. Check the customs entry before querying the invoice. The C79 reflects what was declared; the forwarder's invoice reflects what the forwarder recharged, which is usually but not always the same thing. Amended declarations, post-clearance adjustments and valuation corrections all produce this pattern, and in every case the certificate follows the declaration. If the entry and the certificate agree with each other, the forwarder's invoice is what needs correcting.

Split or partial declarations. One commercial shipment can clear as several entries when goods arrive in parts or under different commodity codes, and one entry can be recharged across several invoices. The rows will not align one to one, and forcing them to is where reconciliations get abandoned. Run the match at entry-reference level with a subtotal on the invoice side, and reconcile the subtotal.

Timing differences are not errors

The variance that most often gets logged as an error is not one at all; it is built into the documents. The C79 reflects the month in which the declaration was accepted and the import VAT accounted for, not the date on the forwarder's invoice and not the date the goods reached your warehouse. A container clearing customs on the 29th and invoiced on the 4th of the following month appears on the earlier certificate while the invoice sits in the later ledger period. Nothing has gone wrong.

The consequence is that a real reconciliation always carries a small population of items in transit between the two documents at each end of the month. List them, carry them forward with a note of which side they are waiting on, and clear them next month. A reconciliation that has been forced to nil by writing off the timing items has destroyed the evidence trail it was supposed to create.

One rule governs all of these situations: the reclaim follows the certificate, not the invoice. Where a line appears on the C79, the import VAT is claimable in the period the certificate covers, even if the forwarder's invoice arrives weeks later. Where it does not appear, it is not claimable yet, whatever the invoice shows and however clearly the money left your bank account.

Small differences still need a name. A £14 variance is not worth an hour of investigation on its own merits, but a £14 variance appearing every month is a systematic coding error at a low value, and the reason to identify it is not the £14. It is the certainty that whatever produces it will eventually produce a larger one.

Failure Modes: Wrong EORI Numbers, Double Reclaims and Missing Certificates

Some errors are one-off variances. The four below are structural, they repeat every month until someone finds them, and each has a detection method that works retrospectively on a ledger you have inherited.

The declaration was made under the wrong number

A forwarder declares under its own EORI, under a superseded entity number after a group restructure, or under another client's number entirely. The import VAT is recorded against that business, not yours, and it will never reach your certificate.

You spot it as a forwarder invoice carrying import VAT with no certificate line, persisting past the following month's C79. The fix has to come from the forwarder, who must amend the declaration; until the amended entry flows through to a certificate, the VAT is not reclaimable, and claiming it in the meantime on the strength of the invoice is exactly the error the certificate exists to prevent.

The mirror image is more dangerous because it looks like good news. Another party's goods appear on your C79, inflating the total you would otherwise have claimed. That VAT is not yours. Do not claim it, flag it to the declaring agent so the entry can be corrected, and keep the correspondence with the reconciliation as evidence you identified it rather than banked it.

Import VAT reclaimed twice

The most expensive failure on this list. Import VAT is claimed once when the forwarder's invoice is coded, then again when the C79 is processed at reconciliation, overstating input tax on every single consignment. It is invisible in any individual month because both entries look reasonable in isolation.

Detection is arithmetic: total the import VAT element of input tax claimed across a period and compare it against the C79 totals for the same period. An input tax figure materially above the certificate total means the same VAT has been claimed from two documents. The same test catches the two related coding errors, since duty treated as recoverable VAT and forwarder disbursements treated as VATable supplies both inflate input tax beyond the certificate, and a ledger that mishandles one line type on a clearance invoice usually mishandles the others.

Once found, this is an error correction rather than an adjustment to bury in the next return, and the thresholds are specific. Errors can be corrected going back four years. A net error of £10,000 or less can be corrected on your next return, as can an error between £10,000 and £50,000 where it is less than 1 per cent of the total value of your sales. Anything over £50,000, anything over £10,000 that breaches the 1 per cent test, and any deliberate error must be reported to HMRC separately. Reconciliation working papers are what demonstrate that the business found the error rather than waited to be told.

The certificate is missing

Four different situations wear the same appearance, and the remedy differs entirely, so establish which one you have before escalating:

• It has not published yet. Certificates arrive around the 10th working day. A certificate chased on the 4th is not late.
• The declaration used the wrong EORI. Covered above, and the only fix runs through the forwarder.
• You are looking at the wrong CDS account. Check that the Government Gateway ID is the one the business subscribed to CDS with.
• It has aged past the 6-month window. It is archived rather than lost, and must be requested from HMRC.

Readers asking whether import VAT can be reclaimed without a C79 at all deserve a straight answer. The certificate is the normal and expected evidence, and HMRC's starting position is that a claim is supported by it. Where a certificate genuinely cannot be obtained, HMRC has discretion to accept alternative evidence that the import VAT was paid and that the business was the owner of the goods, typically the customs entry, the commercial invoice, the forwarder's documentation and proof of payment. That discretion is a remedy for a genuinely irrecoverable certificate, not a routine substitute for retrieving one, and a business that habitually claims on alternative evidence rather than certificates should expect the question at inspection.

A C79 and a postponed VAT statement in the same period

This happens whenever consignments cleared by different routes in the same month, most commonly when one forwarder uses postponed accounting and another pays the VAT at the border. Both statements are correct. The risk is that the same period's box 4 picks up VAT from both sources for the same goods.

The resolution is practical: identify which consignments cleared which way from the entry documents, reconcile each population separately against its own statement, and confirm no entry reference appears in both reconciliations. Keep the two working papers separate and total them into box 4 once. If the underlying question is which route the business should be using, or how postponement affects the return more broadly, that is a different decision from this one and is covered in how UK postponed VAT accounting works for imports.

Posting Import VAT to the Ledger and the VAT Return

The posting structure that makes all of this work is a holding account. Following one consignment through:

When the forwarder's invoice is entered, the service fee goes to the relevant expense account with its input tax coded normally. Duty goes to cost of goods or an import duty expense account. The import VAT recharge goes to an import VAT holding account, not to input tax. When the C79 confirms that amount against the entry reference, the holding account is cleared to input tax.

Two things follow from that structure. The balance on the holding account at any point in the month is the import VAT paid but not yet certified, which makes the unreconciled position visible without running a report. And because input tax can only be reached through the certificate, the double reclaim becomes structurally awkward rather than merely discouraged.

A worked month

An importer clears three consignments in April with customs values of £40,000, £25,000 and £15,000. Duty runs at 4 per cent, giving £1,600, £1,000 and £600, or £3,200 in total. Import VAT is charged at 20 per cent on the customs value plus that duty, which produces £8,320, £5,200 and £3,120. The forwarder's own clearance and handling fees for the month are £900 plus £180 VAT.

The duty-inclusive base is worth pausing on, because import VAT is not 20 per cent of your supplier's invoice. A figure derived from the purchase invoice will never agree to the certificate.

The April C79, downloaded in May, shows £16,640 of import VAT against three entry references matching the three invoices. The reconciliation nets to nil, and the holding account clears.

For the quarter in which April falls, this month contributes:

• Box 4: £16,820. The £16,640 import VAT released by the certificate, plus £180 input tax on the forwarder's own services.
• Box 7: £80,900. The £80,000 customs value of the goods, plus the £900 net clearance and handling fee, which is a purchase in its own right.

The £3,200 of duty appears nowhere on the return. It is a cost, and it stays in the profit and loss account or in stock.

The box 7 question

Box 7 is where practitioners go wrong most often on an import return, usually by entering the import VAT figure or the total paid to the forwarder. Box 7 reports the value of purchases, so for an import it is the value of the goods, consistent with the customs value declared on the entry, rather than any VAT figure and rather than the invoice total from the forwarder. The forwarder's own services are a separate purchase and belong in box 7 in their own right, at the net fee.

At return preparation, the tie is straightforward: the import VAT element of box 4 should equal the reconciled C79 totals for the periods the return covers. That agreement, plus the monthly working papers behind it, is what the return is supported by. The same discipline applies to the rest of the return, and the underlying task is identical to turning supplier invoices into a VAT return working paper for any other category of purchase.

One accounting-software point applies whatever ledger you run. The import VAT recharge line needs a tax code that keeps it out of the VAT return until the certificate supports it, which usually means an out-of-scope or no-VAT code pointing at the holding account. Applying a standard purchase tax code to that line pulls the reclaim into the return a month early, and then the C79 posting pulls it in a second time.

The Monthly Control, the Annual Check and What to Keep

Written as a routine with an owner and a date, the whole of the above is six steps:

1. After the 10th working day, download the previous month's C79 along with any duty deferment and postponed VAT statements, and file them where they will still be readable in five years.
2. Build the comparison against the month's forwarder invoices, one row per entry reference.
3. Investigate the variances, separating timing differences from errors.
4. Clear the import VAT holding account to input tax for every reconciled line.
5. Carry forward unmatched items with a note of what each is waiting on.
6. Raise the queries with the forwarder while the entry is recent enough for anyone to remember it.

Assign it to a person, not to a process. Across every failure in this article, the problem is rarely that the reconciliation is hard; it is that nobody owns the download.

The annual check

There is a backstop worth running once a year, and it is the fastest way to find out whether historical VAT has been left with HMRC. Total the import VAT on the last twelve months of C79s. Compare it against the import VAT element of input tax claimed for the same periods.

If the certificate total is higher, import VAT was paid to HMRC and never reclaimed. That difference is recoverable, subject to the four-year limit and the error correction thresholds set out above, and in an importer of any size it is rarely a small number. If the certificate total is lower, the position is the reverse and more urgent: input tax has been claimed that no certificate supports, which is the double reclaim pattern, and it needs correcting rather than investigating at leisure.

Either result tells you something about the control that produced it. A business whose annual figures tie to the pound is running the monthly reconciliation properly.

Retention

HMRC expects import VAT records to be kept for 6 years: the C79s themselves, postponed VAT statements, customs entries, commercial invoices and the forwarder correspondence that resolved your variances. Read that alongside the 6-month CDS access window and the operational conclusion is unavoidable. The certificate must be downloaded and stored locally within months of publication in order to be available for the remaining five and a half years you are required to hold it. HMRC's retention rule and HMRC's access window do not cover the same period, and the gap is yours to close.

Importers running this control in more than one country will find the structure transfers even though the documents do not, which is why the equivalent TVINN import VAT reconciliation in Norway reads as the same monthly exercise against a different statement. The same is true on the sales side of an e-commerce importer's ledger, where marketplace documentation arrives on its own monthly rhythm and reconciles the same way, whether that means pulling Amazon UK seller VAT invoices into a return-ready spreadsheet or handling any other recurring document flow.

The certificate on its own proves very little. It records what was declared in your name by somebody else, at a border, under time pressure. It becomes evidence at the point where it has been matched, line by line, to what your business actually bought and posted, and that match is the control the reclaim rests on.