
E-Invoicing: What It Is, How It Works & EU Requirements
Learn what e-invoicing is, why it's mandatory in many countries, and how to implement it. Streamline compliance and get paid faster today.
You're here:
Tax Content Lead at Quaderno
I write to transform complex information into clear, practical articles about invoicing and tax basics for online businesses.
My focus at Quaderno is on providing useful explanations that help online business owners understand their next steps.
82 articles

Learn what e-invoicing is, why it's mandatory in many countries, and how to implement it. Streamline compliance and get paid faster today.

E-reporting sends transaction data straight to a tax authority, with no invoice involved. Here is how it works, which European countries require it, and what changes in 2030.

France's B2B e-invoicing mandate starts on 1 September 2026. Here's who has to receive, who has to issue, what counts as an electronic invoice, and how the approved platforms work.

Portugal e-invoicing & digital reporting rules apply to all B2G businesses and some others. Learn about how electronic invoices work, when it’s required & how to comply.

What a merchant of record does, what it costs at real sales volumes, the downsides most MoR guides leave out, and when a payment processor plus tax software is the better choice.

Spanish e-invoicing & e-reporting rules apply to all B2B businesses. Learn about how electronic invoices work, when it’s required & how to comply.

The VAT CESOP Directive, or Central Electronic System of Payment Information, helps the EU enforce VAT rules. Here’s how it will affect remote sellers!

Learn the complexities of applying sales tax to discounted products. From cash discounts to coupons, navigate the rules with this comprehensive guide.

Learn what the EU’s VIES (VAT Information Exchange System) is, how to validate VAT numbers, and why it’s essential for cross-border trade & compliance.

New Zealand’s digital tax rate is 15% GST, but not all foreign businesses must charge GST, and not every time. It all depends on a certain sales threshold.