Timelydo helps you write invoices, send them and get paid. You are the seller, so the tax and invoicing rules of your country apply to you. Some countries now require many invoices to go through a national e-invoicing system or network. This page lists them, with the official sources, so you can check what applies to you.
Last checked 20 अक्टूबर 2026. Rules change often. The official source always wins over this page.
Whether a rule covers you depends on where you are registered, your size, your customer and the kind of sale. Only you, your tax adviser or your tax authority can decide that. Timelydo does not decide it for you.
In these countries many invoices must be issued or reported through a national system. Timelydo does not connect to any of them yet. If your invoices are covered, issue those invoices through a provider that supports the system, and ask your tax adviser which of your invoices are covered.
B2B and B2C invoices must go through the Sistema di Interscambio (SDI). An invoice not sent through SDI counts as not issued.
KSeF is required for invoices between businesses, from 1 February 2026 for the largest and 1 April 2026 for most others, with relief for very small sellers until 1 January 2027.
Invoices between Belgian VAT registered businesses must be structured e-invoices, usually sent over Peppol, since 1 January 2026, including small businesses.
Since 1 September 2026 every business must be able to receive e-invoices through an approved platform, and large and mid sized businesses must issue them. Small and micro businesses must issue them from 1 September 2027.
Since 1 January 2025 businesses must be able to receive structured e-invoices (XRechnung or ZUGFeRD). Issuing them becomes required from 1 January 2027 for larger businesses and 1 January 2028 for the rest, with exceptions such as small businesses (Kleinunternehmer) and invoices up to 250 euros.
Invoicing software used by Spanish taxpayers must meet the VERI*FACTU rules from 1 January 2027 (companies) and 1 July 2027 (others). A separate e-invoicing duty between businesses is being introduced. Timelydo is not a VERI*FACTU system, so from those dates invoices for Spanish tax purposes need software that meets these rules.
E-invoicing through an accredited service provider is required from 1 January 2027 for businesses with revenue of 50 million dirhams or more and from 1 July 2027 for the rest. Sales to consumers are not covered for now.
E-invoices must be validated through MyInvois, phased in by revenue since August 2024. Businesses below a revenue threshold are exempt; the official pages have given different figures, so check the current guideline.
Registered businesses with turnover of 5 crore rupees or more must register B2B invoices on an Invoice Registration Portal (IRN). From 10 crore rupees they must do so within 30 days.
Invoices must be generated electronically (since 4 December 2021) and, in waves by revenue, integrated with ZATCA's FATOORA platform.
Tax invoices must be CFDI, version 4.0 since 2023, stamped by the tax authority (SAT) or an authorised provider (PAC).
Service invoices (NFS-e) and goods invoices (NF-e) are national electronic documents. Small businesses under Simples Nacional must use the national NFS-e from 1 November 2026.
InvoiceNow (sending invoice data to IRAS over Peppol) applies to new voluntary GST registrants now and is phased in for all GST registered businesses from 1 April 2028 to 1 April 2031.
No e-invoicing mandate today. The government has announced e-invoicing for all VAT invoices from April 2029, with details still to come.
The EU VAT Directive sets what a VAT invoice must show in every member state. From 1 July 2030 the EU's VAT in the Digital Age rules add digital reporting based on e-invoices for sales between businesses in different EU countries.
Source 1 (eur-lex.europa.eu) Source 2 (taxation-customs.ec.europa.eu)
In these countries an ordinary invoice, like the ones Timelydo makes, is generally used, but the tax authority sets what it must show. Check that your invoices include everything required.
No national e-invoicing mandate. Each state sets its own sales tax rules, including what an invoice or receipt shows.
No national e-invoicing mandate. What a GST/HST invoice must show depends on the amount (under 100, 100 to 499.99, and 500 dollars or more).
No e-invoicing mandate for businesses. A tax invoice must show what the ATO requires, with more detail from 1,000 dollars.
No e-invoicing mandate. Under the qualified invoice system a registered seller's invoice must show their registration number and tax by rate.
Countries not listed here may have rules of their own. Before you rely on Timelydo for invoices in your country, check with your tax authority or adviser.
Questions about this page, or a rule we have wrong? Write to us at support@timelydo.com.