How do I install the Cross Border Invoicing Compliance skill?

Run npx skillmds@latest add openaccountants/cross-border-invoicing-compliance in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Cross Border Invoicing Compliance skill do?

> Cross-border invoicing rules — which country's requirements apply, what goes on the invoice, and how to handle e-invoicing mandates. Use when the user asks about: cross-border invoice, invoicing foreign client, reverse charge invoice, multi-currency invoice, self-billing cross-border, credit note cross-border, e-invoicing cross-border, which invoicing rules apply, Article 219a, supplier country invoicing, Italy SDI foreign, India IRN cross-border, Mexico CFDI foreign, invoice retention cross-border, archiving invoices, ECB exchange rate, VAT currency conversion, recipient-created invoice, or any question about the correct format, content, or process for invoices crossing borders. It is listed under AI & ML on SkillMD.

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Which AI agents work with Cross Border Invoicing Compliance?

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Is Cross Border Invoicing Compliance free to use?

Yes. Installing skills from SkillMD is free. This skill is licensed under AGPL-3.

Who published Cross Border Invoicing Compliance?

openaccountants (@openaccountants) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Cross Border Invoicing Compliance by openaccountants

Name: Cross Border Invoicing Compliance
Author: openaccountants

Cross-Border Invoicing Compliance

General reference only. This skill is general tax/accounting reference material for AI-assisted workflows. It has not been reviewed for any specific person's facts, documents, elections, deadlines, residency, filing status, or local procedures. Do not rely on it to file, pay, amend, or take a tax position without review by a qualified professional in the relevant jurisdiction.

Disclaimer: This skill provides general guidance on cross-border invoicing rules. Invoice requirements are jurisdiction-specific and evolving rapidly due to e-invoicing mandates. Consult a qualified advisor before relying on this information for compliance.

Skill Metadata

Field	Value
Jurisdiction	Multi-jurisdiction (EU, UK, US, India, Italy, Mexico, and general principles)
Primary Legislation	EU: VAT Directive 2006/112/EC, Articles 217–240; Art 219a (invoicing rules applicable); ViDA Directive (phased 2028–2035)
Scope	Invoice format, content, currency, e-invoicing, and archiving requirements for cross-border transactions
Contributor	OpenAccountants
Validation Date	May 2026
Skill Version	1.0
Cross-references	`eu-reverse-charge.md`, `vat-place-of-supply-master.md`, `eu-oss-digital.md`, country-specific e-invoicing skills

Section 1: General Principle — Whose Rules Govern the Invoice?

The Basic Rule — Article 219a(1) [T1]

Invoicing follows the rules of the Member State where the supply is deemed to take place (i.e., the place-of-supply country).

The Exceptions — Article 219a(2) [T1]

Exception	When It Applies	Whose Rules
(a) Reverse charge — supplier not established in supply country	B2B intra-EU services where customer self-assesses VAT (Art 196)	Supplier's country sets the invoicing rules
(b) Supply outside the EU	Services deemed supplied outside the EU	Supplier's country sets the invoicing rules
Self-billing under reverse charge	Customer issues the invoice on behalf of the supplier	Place-of-supply country's rules apply (basic rule)
Non-EU supplier making taxable supplies in EU	Non-EU seller with EU-taxable transactions	Place-of-supply country's rules always apply (no exception)

Practical Impact [T1]

Scenario	Whose Invoicing Rules?
German consultant invoices French company (B2B reverse charge)	Germany (supplier's rules — exception (a))
French company sells goods domestically	France (place of supply = France)
Italian company invoices US client for consulting	Italy (supply outside EU — exception (b))
US company sells SaaS to French consumer via non-Union OSS	France (place of supply = France; non-EU supplier — no exception)
Dutch company issues self-billing invoice for services received from Malta under reverse charge	Netherlands (self-billing under reverse charge = basic rule)

Section 2: EU Cross-Border Invoicing (Intra-EU B2B)

Mandatory Invoice Content for Intra-EU B2B Under Reverse Charge [T1]

Legislation: VAT Directive Art 226.

Every VAT invoice in the EU must include these elements. For reverse charge invoices, additional requirements apply:

Element	Requirement
Invoice number	Sequential, unique
Date of issue	Date the invoice is created
Date of supply	Date the service was performed or goods delivered (if different from issue date)
Supplier identification	Full name, address, VAT identification number
Customer identification	Full name, address, VAT identification number (verified via VIES)
Description	Nature and quantity of goods supplied or extent and nature of services
Taxable amount	Net amount in the agreed currency
VAT rate	N/A for reverse charge (0%)
VAT amount	EUR 0.00 or blank
Reverse charge notation	Mandatory. Must state "Reverse charge" or equivalent in the relevant language
Reference to legislation	"Article 196, Council Directive 2006/112/EC" or national equivalent

Reverse Charge Notation by Country [T1]

Country	Notation
English	"Reverse charge — Article 196, Council Directive 2006/112/EC"
German	"Steuerschuldnerschaft des Leistungsempfängers — § 13b UStG"
French	"Autoliquidation — Article 196, Directive 2006/112/CE"
Italian	"Inversione contabile — Art. 196, Direttiva 2006/112/CE"
Spanish	"Inversión del sujeto pasivo — Artículo 196, Directiva 2006/112/CE"
Dutch	"BTW verlegd — Artikel 196, Richtlijn 2006/112/EG"
Portuguese	"Autoliquidação — Artigo 196.º, Diretiva 2006/112/CE"

Time Limits for Issuing Invoices [T1]

The VAT Directive requires invoices to be issued by the 15th of the month following the month in which the supply took place (Art 222). Individual member states may impose shorter deadlines.

Country	Deadline
Germany	Immediately, but no later than 6 months after supply (§14 UStG)
France	By the 15th of the following month
Italy	By the 15th of the following month (12th for immediate invoices)
Spain	By the 15th of the following month
Netherlands	Before the 15th of the following month
Belgium	By the 15th of the following month

Section 3: Reverse Charge Invoice Requirements

What Changes on the Invoice When Reverse Charge Applies [T1]

Normal Invoice	Reverse Charge Invoice
Shows VAT rate (e.g., 19%)	Shows 0% or no VAT line
Shows VAT amount (e.g., EUR 950)	Shows EUR 0.00 or omits VAT amount
No special notation needed	Must include reverse charge notation
Only supplier's VAT number required	Both supplier and customer VAT numbers required
Customer pays gross amount	Customer pays net amount only

Customer's Obligations Upon Receiving a Reverse Charge Invoice [T1]

Self-assess output VAT at local rate on the net amount
Claim input VAT on the same return (if entitled — fully taxable business)
Both entries must appear on the VAT return (see eu-reverse-charge.md for box mappings)
Report on Intrastat / acquisition reporting if required by the member state

Common Mistakes [T1]

Mistake	Consequence
Supplier charges domestic VAT instead of reverse charge	Customer pays VAT they shouldn't. Double taxation risk if customer also self-assesses. Supplier must issue credit note.
Missing reverse charge notation	Invoice does not meet legal requirements. Customer's tax authority may deny input VAT deduction.
Customer's VAT number not on invoice	Cannot prove B2B nature. Tax authority may reclassify as B2C.
Supplier doesn't verify VAT number via VIES	If number is invalid, reverse charge does not apply. Supplier liable for domestic VAT.

Section 4: Multi-Currency Invoicing

Which Currency for VAT Calculation? [T1]

Jurisdiction	Rule
EU (VAT Directive Art 230)	VAT amount must be expressed in the currency of the Member State where the supply takes place. If invoiced in a foreign currency, convert using ECB rate or national customs rate.
ECB exchange rate	Use the rate on the date of the chargeable event (typically date of supply). Alternatively, some member states accept the rate on the date of invoice.
UK	HMRC accepts the rate at the date of supply. Use HMRC, ECB, or a reputable financial source.
US	No VAT — but for sales tax, use the exchange rate on the date of transaction.

Practical Guidance for Multi-Currency Invoices [T1]

Element	Best Practice
Invoice currency	Invoice in whatever currency the contract specifies (USD, GBP, EUR, etc.)
VAT amount	Convert to the local currency using the applicable exchange rate
Exchange rate source	ECB daily rate (EU), HMRC rate (UK), Federal Reserve rate (US)
Document the rate	State the exchange rate and source on the invoice or in your records
Consistency	Use the same exchange rate source consistently — switching sources can trigger audit queries

OSS Returns and Currency [T1]

Scheme	Currency Required
Union OSS / Non-Union OSS	EUR. If your MSI doesn't use EUR, convert at ECB rate on the last day of the quarter.
IOSS	EUR
Domestic VAT return	Local currency of the member state

Section 5: Self-Billing / Recipient-Created Invoices Cross-Border

What Is Self-Billing? [T1]

Self-billing (or recipient-created tax invoice) is where the customer issues the invoice on behalf of the supplier. This is permitted under Art 224 of the VAT Directive, subject to conditions.

Conditions for Self-Billing [T1]

Condition	Requirement
Prior agreement	Supplier and customer must have a written agreement that the customer will issue invoices on the supplier's behalf
Acceptance procedure	There must be a mechanism for the supplier to accept or reject each invoice
Invoicing rules	Follow the rules of the place-of-supply country (Art 219a basic rule applies to self-billing under reverse charge)

Cross-Border Self-Billing [T2]

Scenario	Whose Rules?
Dutch customer self-bills for services received from Italian supplier (reverse charge)	Netherlands (place of supply = Netherlands; self-billing under reverse charge follows basic rule, not supplier's rules)
US customer self-bills for services from German supplier	Germany (supply outside EU — exception (b) — supplier's rules)

Common Use Cases

Large retailers issuing invoices to many small suppliers
Royalty payments where recipient calculates the amount
Commission arrangements where the principal issues invoices to agents

Section 6: Credit Notes and Corrections Cross-Border

When to Issue a Credit Note [T1]

Trigger	Action
Price reduction after supply	Issue credit note referencing original invoice
Return of goods	Issue credit note for returned items
Invoice error (wrong amount, wrong VAT)	Issue credit note + new corrected invoice
Retrospective discount (e.g., volume rebate)	Issue credit note at end of period

Credit Note Requirements (EU) [T1]

Legislation: VAT Directive Art 219.

Element	Requirement
Format	"Any document or message that amends and refers specifically and unambiguously to the initial invoice"
Reference	Must cite the original invoice number and date
Content	Corrected amounts, including VAT adjustments
Reverse charge credit notes	Same reverse charge notation as original. Customer must reverse their self-assessment.

Cross-Border Credit Note Complications [T2]

Issue	Guidance
Different reporting periods	Credit note may fall in a different quarter from the original invoice. Report in the period the credit note is issued.
OSS corrections	Corrections to previous OSS quarters are made on the next regular quarterly return (not by amending the original).
Currency differences	If exchange rate has changed since the original invoice, use the rate at the date of the credit note for the adjustment.
Customer in a different country has already filed	Customer must adjust their VAT return in the period the credit note is received.

Section 7: Country-Specific E-Invoicing Quirks

Italy — SDI (Sistema di Interscambio) [T1]

Element	Rule
Mandate	All Italian-established businesses must issue e-invoices via SDI (since 2019 for domestic; since July 2022 for cross-border)
Cross-border sales	Italian businesses must submit an XML e-invoice to SDI even when invoicing foreign customers. The Esterometro was abolished in 2022; replaced by SDI reporting.
Format	FatturaPA XML format. SDI validates the invoice before forwarding.
Foreign supplier selling to Italy	Not required to use SDI (unless established in Italy). The Italian buyer self-assesses VAT and reports via SDI using document types TD17–TD19.
2026 update	SDI technical specs v1.9.1 effective May 15, 2026. New validation checks (error 00327 for VAT Groups).
ViDA impact	EU ViDA Directive will require alignment with EN16931 standard. Italy's SdI clearance model may need adaptation by 2035.

India — IRN (Invoice Reference Number) [T1]

Element	Rule
Mandate	E-invoicing mandatory for businesses with turnover ≥₹5 crore (since August 2023)
Cross-border exports	Export invoices must also be reported to the Invoice Registration Portal (IRP) and receive an IRN. Tax invoice must include QR code.
Format	JSON schema submitted to IRP. IRP validates, generates IRN + QR code, digitally signs.
Foreign supplier to India	Not required to use IRP. Indian buyer handles GST under reverse charge.
Key fields for exports	Supply type = "EXPWP" (export with payment of IGST) or "EXPWOP" (export without payment — under LUT). Shipping bill details required.

Mexico — CFDI (Comprobante Fiscal Digital por Internet) [T1]

Element	Rule
Mandate	All invoices by Mexican-established entities must be CFDI 4.0 format, issued through a PAC (Authorized Certification Provider) with real-time SAT clearance
Cross-border sales	Mexican entity invoicing a foreign client not registered with SAT must still generate a CFDI through the clearance process. Use RFC "XEXX010101000" for foreign recipients.
Foreign supplier to Mexico	Not required to issue CFDI. Mexican buyer may need to issue a CFDI for the foreign payment (complemento de pagos).
Penalties	Non-compliance: 5%–10% of invoice amount. Fraudulent CFDI: criminal liability (prison). SAT has expedited powers to suspend digital certificates.
Complements	Specific transaction types require CFDI complements: payroll (nómina), foreign trade (comercio exterior), payments (pagos), tax withholdings (retenciones).

EU ViDA (VAT in the Digital Age) — Phased Rollout [T1]

Date	Change
July 2028	Deemed supplier rules for platforms (accommodation, transport). Strengthened reverse charge.
July 2030	Mandatory e-invoicing for intra-EU B2B transactions. Digital reporting requirements. E-invoicing becomes default form. EN16931 standard.
2035	Italy's SdI derogation expires. Full ViDA alignment required.

Section 8: Archiving Obligations When Invoicing Cross-Border

Whose Retention Rules Apply? [T1]

Legislation: VAT Directive Articles 244–248.

Rule	Detail
General principle	Each member state sets its own retention period and format requirements for invoices related to supplies made in its territory.
Supplier	Must retain copies of issued invoices per the rules of the member state where they are established.
Customer	Must retain received invoices per the rules of the member state where they are established.
Cross-border	Both parties retain under their own country's rules. If these differ, the stricter rule is the safest approach.

Retention Periods by Country [T1]

Country	Retention Period	Format
Germany	10 years (§14b UStG)	Original format (paper or electronic). Electronic invoices must remain in electronic form.
France	10 years (Art L102B, Livre des Procédures Fiscales)	Electronic invoices in original electronic format
Italy	10 years (Art 2220, Codice Civile)	Must be stored via approved electronic conservation ("conservazione sostitutiva")
Spain	4 years (Art 29.2, Ley General Tributaria) + additional years if open audit	Original format
Netherlands	7 years (Art 52 AWR)	Original format
UK	6 years (VAT Regulations 1995)	Original format
Belgium	7 years (Art 60 Code TVA)	Original format
US	Varies by state — typically 3–7 years for sales tax; 7 years recommended	Any legible format

Key Principles for Cross-Border Archiving [T1]

Principle	Guidance
Authenticity of origin	You must be able to prove who issued the invoice (digital signature, EDI, internal controls)
Integrity of content	The invoice content must not have been altered after issue
Legibility	The invoice must be readable (human or machine) throughout the retention period
Storage location	EU: May store outside the member state, but must provide online access to the tax authority on request (Art 247)
Language	Some countries (France, Germany, Italy) may require invoices to be in the local language or translatable on request during audit

PROHIBITIONS

NEVER issue an intra-EU B2B reverse charge invoice without the mandatory notation. The invoice is legally deficient without it.
NEVER assume the supplier's country rules always apply. Check Art 219a — the basic rule is place-of-supply country.
NEVER invoice in a foreign currency without documenting the exchange rate used for VAT conversion.
NEVER issue a credit note without referencing the original invoice number and date.
NEVER assume foreign suppliers to Italy don't need to worry about SDI — if established in Italy, SDI is mandatory.
NEVER treat Mexican CFDI requirements as optional for cross-border sales by Mexican entities.
NEVER destroy electronic invoices and store only paper copies. Many jurisdictions require retention in original electronic format.
NEVER assume one retention period fits all. Apply the rules of your own country AND consider the rules of the transaction country.

Test Suite

Test 1 — Intra-EU reverse charge invoice, DE to FR

Input: German consultant invoices French company (valid FR VAT) EUR 5,000 for advisory services. Expected: Invoice follows German rules (Art 219a exception (a)). No VAT. Notation: "Steuerschuldnerschaft des Leistungsempfängers" or "Reverse charge — Art 196 Directive 2006/112/EC." Both VAT numbers on invoice.

Test 2 — Italian company invoicing US client

Input: Italian software company invoices US client EUR 20,000 for development services. Expected: Supply outside EU (Art 219a exception (b)). Italian invoicing rules apply. Must submit XML to SDI (post-July 2022). No VAT (out of scope). Retain for 10 years in electronic conservation.

Test 3 — Multi-currency, Maltese company invoicing in USD

Input: Maltese company invoices a Japanese client USD 10,000 for consulting. Place of supply = Japan. Expected: Maltese invoicing rules (exception (b)). Invoice in USD is fine. If VAT were applicable, convert to EUR at ECB rate on date of supply. Retain for Maltese period.

Test 4 — Credit note for OSS sale

Input: German e-commerce seller issued an OSS invoice to an Italian consumer in Q1. In Q2, the consumer returns the goods. Expected: Issue credit note referencing original invoice. Report the correction on the Q2 OSS return under Italy, not by amending Q1.

Test 5 — Mexican company invoicing foreign client

Input: Mexican SaaS company invoices a Colombian client $5,000/month for software. Expected: Must issue CFDI 4.0 via PAC with real-time clearance. Use RFC "XEXX010101000" for foreign recipient. Complemento de comercio exterior may be required.

Disclaimer

This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. Open Accountants and its contributors accept no liability for any errors, omissions, or outcomes arising from the use of this skill. Invoicing requirements are evolving rapidly due to e-invoicing mandates worldwide. Always verify current rules with official sources and a qualified advisor.

Data reflects 2025–2026 rules. OpenAccountants — open-source accounting skills for AI — info@openaccountants.com

Source: OpenAccountants — open tax Guides for AI, reviewed by named CPAs/CAs/EAs. Quality: source-cited draft. For always-current figures and named-accountant backing, connect the OpenAccountants MCP server (openaccountants-mcp).

Cross Border Invoicing Compliance

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