A typo on an invoice is now one of the four legal triggers for a credit note.

The four cases

Paragraph (d) is the one that changes daily practice. The other three describe commercial events that already produced a credit note in most finance departments. An administrative or numerical error usually did not: the ordinary fix was to void the invoice internally and issue a replacement. Once an invoice has been transmitted through the eInvoicing network and its tax data reported to the Federal Tax Authority, that route is closed — the document exists in the FTA's records and the correction has to exist there too.

Note also what paragraph (b) does not say. It does not say "reduced by agreement", or "reduced following a dispute". It says reduced for any reason. A goodwill reduction applied unilaterally by the supplier is inside it.

The deadline is 14 days, and it runs from the transaction

Article 6(5) of MD 243 sets the backstop clock: an Electronic Invoice or Electronic Credit Note "must be issued and transmitted by the Issuer through the Electronic Invoicing System within 14 days from the Date of Business Transaction."

Two things follow that are easy to get wrong.

• The clock starts at the transaction, not at your month-end close. A credit note agreed on the 3rd and processed in the following month's run is late, however neatly it lands in the ledger.
• VAT registrants are governed first by the VAT Law — and it is also 14 days, counted from somewhere else. Article 6(4) applies to a Registrant: the electronic invoice and electronic credit note must be issued and transmitted "within the timeline prescribed by the VAT Law", and Article 6(5) is expressed as subject to it. MD 243 does not restate that figure. The VAT Decree-Law does: under Article 62(2), where the output tax calculated exceeds the tax that should have been charged, the Registrant "shall issue a Tax Credit Note according to the provisions of this Decree-Law within 14 days from the date in which any of the situations provided for in Clause 1 of Article 61 of this Decree-Law took place." Same number, different starting gun — and the difference is the whole point.

Which clock actually applies to you, and why the two differ. MD 243 counts from the Date of Business Transaction, which it defines as the earlier of the date the business transaction occurred or the date payment for it was received — that is, the original supply. Article 62(2) of the VAT Decree-Law counts from the adjustment event: the cancellation, the change in the nature of the supply, the alteration of the agreed consideration for any reason, the return of goods with the consideration, or the moment tax was charged or treated in error (Article 61(1)(a)–(e)). Read literally, the MD 243 clock for a credit note is unusable for an error found in month four — it expired in month one. Article 6(4) is what stops that being a problem: if you hold a TRN, your deadline is 14 days from the event that made the credit note necessary, not 14 days from the invoice it corrects. The 14 days in Article 6(5) is the residual rule for an issuer in scope of eInvoicing whom the VAT timeline does not already catch.

Two further provisions are worth holding alongside it. Article 70(4) of the Decree-Law — the article that otherwise sets the conditions for issuing a tax credit note — states that a Registrant subject to the Electronic Invoicing System must issue and transmit the tax credit note in the form of an Electronic Credit Note. Not may: the electronic form becomes the only compliant form once your phase begins. And Article 60(8) of the VAT Executive Regulation removes part of the paper-era rulebook for exactly those documents: where a credit note is required as an Electronic Credit Note under Article 70(4), or is issued as one voluntarily, paragraph (e) of Clause 1 and Clauses 2 and 3 of Article 60 do not apply — the prescribed presentation of old value, corrected value, difference and tax on the difference, the FTA-approval route for omitting particulars, and the conditions for issuing "by electronic means" all fall away, because the XML specification now governs. The rest of Article 60 stands, including the words "Tax Credit Note" on the document and enough information to identify the supply.

Missing the window is violation 3 in Cabinet Decision No. 106 of 2025: AED 100 for each electronic credit note not issued and transmitted in time, capped at AED 5,000 in any calendar month. That cap is the reason a systemic failure and a single oversight cost the same after fifty documents — and the reason the uncapped notification penalties matter more. The full penalty table is here.

Two kinds of credit note, and only one of them can be self-billed

The Ministry's guidelines set out six categories of electronic invoice. Credit notes account for three of them.

An electronic Tax Credit Note is issued by a Taxable Person when a reduction of output tax occurs. An Electronic Credit Note — without "Tax" — is the commercial equivalent, used against a Commercial Invoice: the document type for sales that do not require a tax invoice under the VAT Decree-Law, such as exempt or out-of-scope supplies, or any supply made by a business that is not VAT-registered at all.

That last category is where most small businesses in the UAE sit, and it is worth being explicit about it: not being registered for VAT does not put you outside this. You issue Commercial Invoices and Electronic Credit Notes rather than tax documents, but you issue them through the same network on the same clock. The scope rule that catches you is here.

The blank cells are not an oversight. Self-billing — where the buyer raises the document on the supplier's behalf — is available for VAT purposes only, and Article 9 of MD 243 permits it only where both the recipient and the issuer are Registrants. There is consequently no self-billed commercial credit note. And because self-billing requires the buyer to be on the eInvoicing system, an arrangement that works fine today can break at a phase boundary: if your customer self-bills you and their mandatory date falls after yours, they may not yet be able to issue the document you are relying on.

What a credit note is allowed to do

Four practical permissions sit in chapter 12 of the guidelines, and each of them removes a workaround businesses commonly invent.

• Partial credit notes are allowed. An Electronic Credit Note can cover only part of the electronic invoice amount. You do not have to reverse the whole invoice and re-issue it to correct one line.
• One credit note can reference several invoices. Where a single electronic Tax Credit Note is issued against multiple past electronic Tax Invoices, references to all of them can be provided in that one credit note, in the Preceding Invoice Reference section. A quarterly rebate across twelve invoices does not need twelve documents.
• Volume discounts have their own reason code. Electronic Credit Notes can be used to reflect volume discounts, with the Credit Note Reason Code set to volume discount. Note the distinction from ordinary discounts, which are not credit notes at all: item-level discounts belong in Line Level Allowances and document-level discounts in Document Level Allowances, each with a reason field and a code list. A discount applied when the invoice is raised is an allowance; a discount granted afterwards is a credit note.
• A negative total must be a credit note. On a summary invoice — multiple transactions with the same customer consolidated over an invoicing period — document-level fields can be zero or positive to pass Peppol validation. If the total payable comes out negative, the guidelines are direct: the transaction must be documented using an electronic Credit Note. You cannot net a period down to a negative invoice.

There is no provisional invoice to correct later

The guidelines close off the most common escape route in one sentence: there is no Electronic Invoice category for 'provisional invoices'. Every provisional invoice issued should be an Electronic Invoice, full stop. Adjustments to a provisional amount are then made the ordinary way — an Electronic Credit Note if the amount comes down, an additional Electronic Invoice if it goes up.

Two related arrangements are handled without credit notes at all, and it is worth knowing which is which:

• Advance payments. When an advance was invoiced and the final invoice is later issued for the balance, the adjustment goes in the Paid Amount field, with the original advance invoice cited in Preceding Invoice Reference. No credit note is involved. Prepayments work the same way.
• Retentions. Where a contract retains part of a milestone, the guidelines describe an acceptable practice: issue the electronic invoice for the amount payable after the retention is deducted, then issue a separate electronic invoice for the retained amount when the buyer becomes liable to release it. The calculation showing the deduction belongs on a separate commercial document — the guidelines say expressly that these calculations should not appear on the electronic invoice. Construction and fit-out businesses that currently show the retention line on the face of the invoice will need to move it.

You still have to keep them, and delegating storage does not delegate the duty

Article 11 of MD 243 requires every person subject to the system to store electronic invoices, electronic credit notes and any associated data for the period prescribed by the Tax Procedures Law. That is 5 years following the tax period for a taxable person, 5 years from the end of the calendar year in which the document was created for everyone else, and 7 years for real estate records — plus 4 further years where there is a dispute with the FTA, an ongoing audit, or notice of an intended audit, and 1 further year from a voluntary disclosure falling in the fifth year.

The phrase "within the State" has been given a functional reading. Appendix 4 of Guidelines V1.1 states the policy intent: the requirement is that the records remain accessible, reproducible and verifiable by the FTA throughout the retention period, and the reference to "within the State" should be interpreted as requiring that they can be retrieved and provided on request irrespective of the geographic location of the servers, databases, or cloud-based solutions. In plain terms, a business on a foreign cloud is not automatically in breach — but it carries the burden of producing the records promptly. Separately, the guidelines confirm that using your provider to store the data is permissible by contract and does not transfer the legal obligation: the person remains ultimately responsible.

Frequently asked questions

Sources

• The four compulsory cases, the 14-day clock, self-billing and storage — Ministerial Decision No. 243 of 2025, Arts. 6, 8, 9, 11 (PDF)
• The six document categories, self-billing conditions, partial and multi-reference credit notes, volume discount reason code, the negative summary invoice, provisional invoices, advance payments and retentions, and the Appendix 4 storage reading — UAE Electronic Invoicing Guidelines V1.1, chs. 5.4, 10.1–10.4, 12.2, Appendices 4 and 5 (PDF)
• The 14-day VAT timeline for a tax credit note, the five adjustment events it runs from, and the obligation to issue it in electronic form — Federal Decree-Law No. 8 of 2017 on VAT and its amendments, Arts. 61, 62, 67, 70 (PDF)
• Which Article 60 particulars stop applying to an electronic credit note — Executive Regulation of the VAT Decree-Law, Cabinet Decision No. 52 of 2017 and its amendments to September 2026, Art. 60 (PDF)
• The AED 100 per credit note penalty and its monthly cap — Cabinet Decision No. 106 of 2025, annexed table, violation 3 (PDF)
• Implementation phases and dates — Ministerial Decision No. 244 of 2025 (PDF) · Ministerial Decision No. 66 of 2026 (PDF)
• Programme overview and document library — Ministry of Finance, eInvoicing

Verified 16 September 2026 against the Ministry of Finance's and the Federal Tax Authority's published PDFs, re-downloaded on the date of verification. Updated 16 September 2026: the gap left open in the first version of this page is now closed. Article 6(4) of MD 243 subjects a VAT registrant to "the timeline prescribed by the VAT Law" without restating the figure; we have since read that figure out of the consolidated VAT Decree-Law published by the Authority — Article 62(2) gives 14 days from the date one of the Article 61(1) situations took place — and set it against the Article 6(5) backstop, which counts from the Date of Business Transaction instead. The reading that a registrant's clock therefore starts at the adjustment event is ours; the two provisions are quoted as they stand. The field names used in this guide (Paid Amount, Preceding Invoice Reference, Credit Note Reason Code, Line and Document Level Allowances) are the Ministry's, and their exact form is fixed by Peppol's PINT-AE specification rather than by us.

Related

• Nine VAT rules change on 1 October 2026 — cash payments, employee accommodation, bundled supplies. The rate stays at 5%.
• eInvoicing below AED 50 million — why VAT registration has nothing to do with being in scope, and the 31 March 2027 date.
• The penalties — AED 100 per missing credit note, and the three fines with no cap at all.
• The mandatory fields — what has to be carried on the document itself.
• Self-billing and VAT groups — the 24-month intra-group grace period, the TIN each member needs, and why the buyer has to be live before it can self-bill you.
• Charges, currency and rounding — the one place rounding is allowed, which day's Central Bank rate converts a foreign-currency invoice, and where a municipality surcharge belongs.
• Choosing an accredited provider — what accreditation already guarantees before you ask a single question.
• VAT calculator — the 5%, the registration thresholds, and the eInvoicing timetable in short.
• Corporate tax calculator — the other tax registration every UAE company now has.