

Decrease of 1% of the VAT rates for the year 2023
Decided by the Tripartite and concretised by the law of 26 October 2022 (memorial A n°534), the VAT decrease will concern the rates of 17%, 14% and 8% (going respectively to 16%, 13% and 7%).
The super-reduced VAT rate will remain unchanged at 3%.
This 1% reduction will apply to all products and services, without restriction as to activity, between 1st of January 2023 and 31st December 2023.
What about operations carried out in 2022 but invoiced in 2023?
- In theory
To determine the applicable VAT rate (17% or 16%), the VAT law refers to the chargeable event, i.e., when the delivery of goods is made / when the provision of services is completed. This is therefore the moment when the operation is carried out.
However, there are some exceptions to this rule:
In the case of a deposit/advance invoice, the VAT payable will be that at the rate in force at the time of collection, up to the amount received.
For simplification, if there is an obligation to issue an invoice (the most frequent situation), the VAT rate will be determined by the date of the invoice.Point of attention: the invoice must be issued no later than the fifteenth day of the month following that during which the delivery of goods or supply of services was made. If the invoice is issued after this period, the key date for the application of the VAT rate will remain the 15th day of the month following the completion of the transaction.
- In practice / examples
If the invoice is issued in December 2022, a VAT rate of 17% applies (rate from the date of the invoice).
If the invoice is issued in January 2023, a VAT rate of 16% applies (rate from the date of the invoice).
If the invoice is issued late, after 15 January 2023, in February for example, the applicable VAT rate is that in force on 15 January 2023 (invoicing deadline), i.e., 16%.
The invoice issued in January 2023 must include a VAT rate of 17%!
The applicable rate is not based on the date of the invoice issued (2023) but on the billing deadline (15th day of the month following the operation / 2022).
The 17% rate must be maintained in accounting billing software in 2023.
The credit note must include the same VAT rate as the initial invoice. The credit note issued in 2023 for an initial invoice of 2022 must include 17% VAT.
What if a new invoice, corrected, is issued after the credit note for this same accounting service, in 2023? The VAT rate is linked to the deadline for billing the service. The invoicing deadline for a service carried out in November 2022 is 15 December 2022.
The new invoice, dated 2023, must include VAT at 17% (rate in force on 15 December 2022).
The rent for December 2022 will include VAT at 17%, that for January 2023 will include VAT at 16%.
From a Luxembourg point of view, the foreign service provider / supplier must invoice the 15th day of the month following the service. The Luxembourg customer must self-assess VAT under reverse-charge mechanism on this date.
- In practice / examples
If the invoice is issued in December 2022, VAT is self-assessed at the rate of 17% under reverse-charge mechanism (rate of the date of the invoice).
If the invoice is issued in January 2023, VAT is self-assessed at the rate of 16% under reverse-charge mechanism (rate of the date of the invoice).
If the invoice is issued late (according to Luxembourg VAT rules, but potentially on time according to foreign rules), after 15 January 2023, in February 2023 for example, VAT is self-assessed at the rate of 16% under reverse-charge mechanism (Luxembourg rate applicable on the billing deadline / on 15 January 2023).
The credit note must be self-assessed based on the same VAT rate as the initial invoice. The credit note issued in 2023 for an initial invoice of 2022 will have to be self-assessed under reverse charge mechanism with 17% VAT.
What if a new invoice, corrected, is issued after the credit note for this same accounting service, in 2023? The VAT rate is linked to the billing deadline. The billing deadline for a service in November 2022 is 15 December 2022. The new bill, dated 2023, must be self-assessed under reverse-charge at 17% (rate in force on 15 December 2022).
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