Permit Amendment Singapore Customs: Amend, Cancel or Refund
S$0.21 is what one TradeNet amendment costs you in messaging charges (AskGov, 3 March 2026). A new permit costs you about S$3.19 (Singapore Customs, 18 February 2026). So the first question on any permit amendment Singapore Customs receives is about timing, not the size of the mistake.
Short version: if the field can change, amend it in TradeNet. If it can't, cancel the permit while it is valid and file a new one. Once the permit is used, expired or paid, permit amendment is over and the route becomes a refund, a short-payment permit or a voluntary disclosure (Singapore Customs, 25 March 2026).
This guide starts once a permit is approved. A rejected application is a different problem, covered in our guide to rejected permits.
Updated 23 September 2026. Written for the finance or operations person holding an approved permit with a mistake on it. We amend permits for clients as part of our import and export permit declarations work. If you only want the answer, read on.
Key takeaways
You can amend an approved permit while it is valid and unused, with no limit on the count (Singapore Customs). Each one is S$0.21.
GIRO pays a GF or G7 permit 5 working days after approval. An unpaid one can be cancelled only on the approval day, before 23:59:59 (AskGov, 3 June 2026).
A fully or partially paid permit cannot be cancelled at all, and TradeNet says so in capital letters (AskGov, 26 February 2025).
Customs refunds have a 5-year window. Under GF and TX, a GST-registered importer claims the GST from IRAS instead (Singapore Customs, 16 February 2026).
Amend an export permit after its CO has gone to print and every CO under it is void. The new one is ready 2 working hours after approval (Singapore Customs, 18 February 2026).
Has the incorrect permit been used yet?
If your permit has cleared cargo, you can't amend or cancel it. If it expired more than 1 calendar day ago, you can't cancel it either (Singapore Customs). Your permit's status picks the route; the mistake only picks the field.
"My new staff made an error to the 'Importer's Name' in a permit application that was approved. Can the permit be used to clear my cargoes?" — a trader asking Singapore Customs, published on AskGov
Customs replied that you can amend the Importer Name while the permit is valid and not yet used. That is a S$0.21 fix (AskGov).
"Declarant tried to apply permit cancellation for an IG permit with GF and TX conditions but encountered rejection message, CANCELLATION IS NOT ALLOWED FOR PAID PERMIT. PLEASE APPLY FOR REFUND, what is the reason?" — a declarant asking Singapore Customs, published on AskGov
The usual question, when can I amend my permit, has a short answer: while it is valid and unused. Check 3 things, in this order.
Has the permit been used for clearance?
Has it expired?
Has GIRO already taken the payment, 5 working days after approval (Singapore Customs)?
Background: how a Cargo Clearance Permit is obtained.
Amend, cancel, refund or disclose: four routes on one clock
Singapore Customs explains these 4 routes on 4 separate pages. Side by side, they give you 1 timeline, with the fee and the GST or CO effect.
Situation | Route | Clock | Government fee | GST or CO effect | Source |
Valid, unused, field can be amended | Amend in TradeNet | Before use or expiry | S$0.21 each | Printed CO on an export permit is voided | |
Valid, unused, field locked | Cancel, file a new permit | While valid; exports before loading | About S$3.19 | Export with CO: new joint permit and CO, about S$9.27 | |
GF or G7 permit in error, unpaid | Cancel | Approval day, before 23:59:59 | About S$3.19 to replace | No GIRO deduction once cancelled | |
Payment permit already paid | Refund, or input tax claim under GF and TX | Refund within 5 years | None cited | GST comes back in the GST return | |
Used, value too low | Short-payment permit | After clearance | None cited | Evidence for the extra input tax | |
Used, value too high, incorrect HS code or importer | Refund for value too high; voluntary disclosure for an incorrect HS code or importer | Disclosure processed in 3 working days | None cited | Importer in error: replacement permit too | |
Export already loaded or exported | No cancellation; voluntary disclosure | Window closed at loading | None cited | Any CO follows the permit |
Whether you amend or cancel an export permit or an import one, 3 rules hold. You can't move cargo on a cancelled permit (Singapore Customs, 25 February 2026). After an amendment, you show the newest approved copy wherever Customs checks it. Once the Manifest Compliance Unit asks to audit your permit, you can no longer cancel it, and your route is a disclosure (Singapore Customs).
If you already filed a replacement, deal with the original too: cancel it if valid, unused and unpaid, or apply for a refund if paid (AskGov, 3 June 2026). On payment permits, two live permits for 1 shipment means GIRO collects twice.
A re-export runs on its own permit type, so check it first on our re-export permit declarations page.
What permit amendment Singapore Customs allows, field by field
You can change most fields. The list you probably check for the ones you can't is older than you think. Annex B has 45 non-amendable fields and reads 'Last Update: 23 September 2013' (Singapore Customs Annex B, 23 September 2013). Customs itself calls its list non-exhaustive (AskGov, 3 June 2026).
Field | Amendable? | Source |
Importer Name | Yes, within validity and before clearance | |
Exporter Name | No: a critical field, so cancel and re-file | |
Exporter UEN | No | |
CPC | No | |
Declaration Type | No | |
Total number of items | No: adding or dropping a line is a new permit | |
Declaring Agent Name | No | |
Departure date, with controlled or dutiable goods | No |
Compare the first two rows. You can change the Importer Name but not the Exporter Name, which the 2013 annex does not even list. Customs refuses it anyway, as a critical field (AskGov).
That is the risk of reading a 13-year-old PDF as the full answer. Every permit amendment Singapore Customs refuses sends you the same way: cancel the permit and take out a new one (AskGov, 3 June 2026). Use Annex B as a first filter. If the goods are controlled or dutiable, ask before you file the change.
Why won't a paid permit cancel?
Because your money has already moved. On a GIRO payment permit, the payment arrives 5 working days after approval (Singapore Customs). The approval day is the only window you can count on without a condition.
Customs says 3 things, in 3 places:
Its permit page: a payment permit cancelled before 11:59 pm is processed that day. Otherwise it takes 5 working days while GIRO is checked (Singapore Customs).
AskGov: you can cancel an unpaid GF or G7 permit on the day it was approved, provided it is unused and your request is in by 23:59:59 (AskGov).
AskGov again: no cancellation once a permit is fully or partially paid (AskGov).
Here is our reading of those 3 statements. It is ours, not a Customs rule. The approval day is the safe window. After it, a request may still be taken in while GIRO is checked; once the deduction lands, about 5 working days after approval, TradeNet treats the permit as paid.
If a date turns on it, ask Customs before you rely on our reading. Two answers soften the wait. With a cancellation pending, an urgent shipment can go on a new payment permit (AskGov, 26 February 2025). Once it is approved, GIRO takes nothing (AskGov, 26 February 2025).
Miss the window after filing the corrected permit and GIRO collects on both, each 5 working days after its own approval (Singapore Customs). Getting the first payment back is the next question.
Does the GST come back from IRAS or from Singapore Customs?
If you are GST-registered, usually from IRAS. Where GST left your own IBG account under GF and TX, Customs says to claim it as input tax in your GST return, not as a refund (Singapore Customs). It told the declarant quoted above the same (AskGov, 3 June 2026).
Situation | Who returns the money | How | Source |
GF and TX, importer's IBG, importer named correctly | IRAS | Input tax in the GST return for that period | |
Importer name or UEN in error | Singapore Customs | Refund, plus a new permit in the right name | |
G7, paid from the declaring agent's IBG | Singapore Customs | The declaring agent files the refund | |
Value declared too low | You pay the difference | Short-payment permit; IRAS accepts it as evidence for the input tax | |
ME permit value in error | IRAS | Correct it in the GST return; no need to cancel |
A mistaken importer is the exception for one reason. IRAS wants the permits behind an import GST claim to name you as importer (IRAS, 24 June 2026). A permit in someone else's name can't support yours, so that GST comes back from Customs.
Where a Customs refund applies, you have 5 years from the GST payment date. You or your declaring agent file it in the TradeNet Refund Module. Reasons Customs accepts include a cancelled shipment and an incorrect HS code, value, or importer name or UEN (Singapore Customs).
A refund on its own needs no voluntary disclosure (Singapore Customs, 11 June 2026). Under the Major Exporter Scheme, read the ME row and our Major Exporter Scheme support page. This is general information, not tax advice.
What an export permit amendment does to your Certificate of Origin
If you filed a CO with your export permit, the two are tied. You can amend the CO only while the export permit is valid, and only if the same field is amendable on the permit (Singapore Customs).
Your timing matters most here. Amend the export permit after the CO was generated for printing, and every CO issued under it is null and void. You get a new CO number, ready to collect 2 working hours after approval. Your buyer now holds an outdated copy (Singapore Customs).
If the field is locked, cancel the export permit and file a new joint export permit and CO. That costs you about S$9.27 combined, against about S$6.29 for a CO alone (Singapore Customs).
The old CO: only unused COs can be cancelled, through FormSG. If Customs raises nothing within 7 days, you can treat them as cancelled (Singapore Customs).
An electronic preferential CO: once sent to the importing country's authority, it can't be amended. Give your buyer the new reference.
We covered the print-stage trap in why a Certificate of Origin takes weeks. For the paperless side, see our electronic Certificate of Origin rules.
Want a second pair of eyes on your permits? WhatsApp the declaration desk on +65 8786 3987 with the permit or invoice you want checked. |
What does each fix cost?
An amendment costs you S$0.21. A new permit costs you about S$3.19, made up of S$0.90 in statutory fee and S$2.29 in processing and messaging charges (Singapore Customs).
By our own sum (S$3.19 divided by S$0.21), cancelling and re-filing costs about 15 times what an amendment does. That is before any agent charges, and before GIRO collects on a second payment permit.
Those figures are for traders who file their own permits, and leave out third-party charges. Customs' AskGov answer on the S$0.21 adds that service fees may apply when someone files for you, so ask your agent for its amendment and cancellation charges in writing before you choose (AskGov).
For the whole bill, see what customs clearance actually costs.
So which route should you take?
Most amend-or-cancel questions turn on 2 facts printed on the permit. Follow the clock and the payment code, not the size of the mistake. A one-word slip in the Exporter Name can cost you a new permit and a new CO; an incorrect Importer Name on an open permit costs S$0.21 (AskGov).
4 calls we would make:
The field can be amended? Amend it, even if cancelling feels cleaner. On a payment permit the cancel door may already be shut.
A payment permit in error on its approval day? Decide that day. Before 23:59:59 an unpaid GF or G7 permit can still be cancelled (AskGov). Tomorrow it may not.
GST deducted under GF, importer named correctly? The money comes back through your GST return. Don't wait on a Customs refund that Customs will point back to IRAS.
Permit already used? Split the problem. A short-payment permit or a refund settles the money. For an incorrect HS code or importer, a voluntary disclosure settles the record; a refund on its own needs none.
The common advice is 'just cancel it and file a new one.' That is right for an unpaid, unused permit on the right day. After the GIRO deduction it produces the refusal quoted earlier, and if you then ask Customs for the GST, you are sent to IRAS (AskGov).
Ask your agent in writing who pays when its own keying caused the change. Our note on who carries a wrong declaration covers how that split usually falls.
The first hour after you spot the error
Check whether the permit has been used for clearance. If yes, skip to the next section.
Read the payment condition and the approval date. GF or G7 tells you whose IBG pays, yours or your agent's; the date tells you where you are in the 5-working-day GIRO window. These first two checks decide whether a permit amendment Singapore Customs will accept is still open to you (Singapore Customs).
Check the field against Annex B, then ask anyway. It is dated 23 September 2013 and is not the full list (Annex B).
For an export, check for a CO issued with the permit, and whether it has gone to print.
Pick your route from the first table.
If you file a replacement, keep its number beside the old one, then cancel or refund the original.
Keep the corrected permit with the invoice. Your GST return rests on it, and it is the copy checkpoint officers expect.
If the permit was already used for clearance
Once goods have cleared, the permit is fixed, so the money and the record are handled apart. A value that was too low gets a short-payment permit for the shortfall. A value that was too high gets a refund request (Singapore Customs).
A short-payment permit only collects duty or GST; you can't clear cargo on it (AskGov). Customs lists 4 cases for it, among them CIF charges left out and free supplier items that were never declared (AskGov, 26 February 2025).
With an incorrect importer on a used GST permit, Customs gives 3 steps: take out a replacement permit under the correct name, ask for your money back on the old one, and file a voluntary disclosure (AskGov, 29 June 2026). An incorrect HS code on a used permit goes to a voluntary disclosure (AskGov, 29 June 2026).
Timing: your disclosure must be whole, and it must reach Customs before any check, audit or investigation begins. You face no fixed deadline, and Customs processes it in 3 working days (Singapore Customs, 20 August 2026).
Filing: you log in with Singpass or Singpass (Corporate) and attach an Excel sheet naming each affected permit and its error.
One edge: missing the GIRO permit conditions G1, G7 or GF is outside the programme (Singapore Customs).
To stop the next error at source, see what goes into a Singapore customs declaration and getting the HS code chain right.
Send the permit and the invoice, get the route in writing
Send us the permit that is in error and the commercial invoice behind it. For an export, add any Certificate of Origin issued with it. We'll tell you in writing which of the 4 routes fits your case (amend, cancel and re-file, refund or short-payment, or voluntary disclosure) and what you will pay on the government side.
The answer is yours to use, whoever files the fix. If the route is an amendment, that is work we already do for clients.
WhatsApp +65 8786 3987 or use the contact the declaration desk form. Our office is at 60 Paya Lebar Road, Unit 07-54 Paya Lebar Square, Singapore 409051. For every permit type we handle, see all six permit services.
Frequently asked questions
Can I amend a TradeNet permit after it has been approved?
Yes, while the permit is still valid, has not cleared cargo and the field is one Customs lets you change. You pay S$0.21 in TradeNet messaging charges for each amendment (AskGov). If the field is locked, cancel the permit while it is valid and apply for a new one.
Why does TradeNet say cancellation is not allowed for paid permit?
Because GIRO has already collected the duty or GST, and a fully or partially paid permit cannot be cancelled. An unpaid GF or G7 permit can be cancelled only on its approval day, before 23:59:59 (AskGov). After payment, the money comes back by refund or through your GST return.
Can I change the exporter's name on an export permit?
No. Customs treats the Exporter Name as a critical field, so you can't amend it, even though it is missing from the 2013 list of locked fields (AskGov). Cancel the export permit before the goods are cleared or loaded, and file a new one with the correct name.
Do I get the GST back if I cancel an import permit?
If the cancellation is approved before payment, GIRO deducts nothing. If GST was already paid under GF and TX and you are GST-registered, claim it as input tax from IRAS in your GST return. A Customs refund applies mainly where the importer name or UEN was incorrect (Singapore Customs).
What happens to my Certificate of Origin if I amend the export permit?
If the CO had already been generated for printing, every CO issued under that permit becomes null and void. Customs issues a new CO number, ready 2 working hours after approval (Singapore Customs). Send your buyer the new CO and cancel the unused old one.
About this guide
This guide to permit amendment with Singapore Customs was written by the Declaration Nexus Team. We are a Singapore customs broker and declaring agent.
If you searched 'permit amendment singapore customs', the short answer is at the top: amend while the permit is valid and unused. Sources: Customs and IRAS pages dated 2013 to 2026, linked at each claim. Nothing here is a guarantee of permit approval, clearance, cancellation or refund, and no one can commit Singapore Customs or IRAS to a decision or a timeline.
