Do I charge VAT selling digital goods to Luxembourg?

Seller in Ireland, customer in Luxembourg, electronically supplied service. Answers below are live responses from a working API, not written from memory.

Selling to a consumer: charge 17% Luxembourg VAT.

Charge LU VAT at 17% (customer's country) and report via the One-Stop Shop (OSS).

Selling to a business with a valid VAT number: charge 17%.

Charge LU VAT at 17% (customer's country) and report via the One-Stop Shop (OSS).

Why the rate is Luxembourg's and not Ireland's

For digital goods sold to EU consumers the place of supply is where the customer belongs, so the customer's national rate applies and it is reported through the One-Stop Shop. Applying the seller's own rate is the single most common mistake in hand-rolled checkouts.

B2C electronically supplied services taxed where the customer belongs (Art. 58); reported via OSS.

The numbers

CaseCharge VAT?RateMechanism
Consumer (B2C)Yes17%standard
Business with VAT ID (B2B)Yes17%standard
Standard digital rate in Luxembourg17% (VAT)

Check it yourself

curl "https://checkout-tax-api.pages.dev/decide?seller_country=IE&buyer_country=LU&product_type=digital"

Free, no key. A valid VAT number in buyer_vat_id flips it to reverse charge.

Running this logic yourself?

The decision above — place of supply, reverse charge, out of scope, and the invoice wording for each — is about 30 branches once you cover the EU, UK, US, Canada and Australia. It also ships as a one-time $49 self-host kit, which is off sale for the moment — a packaging fault broke its install step, and rather than take money for something that fails on the first command I have pulled the buy link until the corrected build is listed. Email craniusmaximusllc@gmail.com if you want it now and I will send it. The hosted API is free either way.