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Denmark · Bookkeeping Act · NemHandel / Peppol

Denmark digital bookkeeping and e-invoicing integration

Denmark's Bookkeeping Act requires businesses to use a digital accounting system that can send and receive structured e-invoices, over NemHandel or Peppol, while public-sector invoicing has been mandatory for years. We make your system meet the Act and exchange compliant invoices.

Prefer to write? Email sales@nowgray.com with the software you run today and your timeline.

Digital system compliance
2026

The Bookkeeping Act requires a compliant digital accounting system that can send and receive structured e-invoices, with compliance dates through 2026 by business type. B2G invoicing has been mandatory for years via NemHandel.

  • Bookkeeping Act compliance
  • Send & receive e-invoices
  • NemHandel & Peppol
  • OIOUBL / Peppol BIS formats

What is Bookkeeping Act digital invoicing (NemHandel / Peppol) in Denmark?

Denmark's updated Bookkeeping Act (Bogforingsloven) does not mandate B2B e-invoicing directly, but it requires businesses to keep their records in a compliant digital accounting system, and that system must be able to send and receive structured electronic invoices. The practical effect is that your software has to support e-invoicing even if you are not forced to use it for every transaction.

Denmark has been a public-sector e-invoicing pioneer: B2G invoicing has been mandatory for years through the NemHandel network, historically in the OIOUBL format, with Peppol BIS now widely used. The compliance dates for the digital-system requirement run through 2026 depending on business type and whether you use a registered or in-house system.

We make your accounting or billing software meet the Act and exchange structured invoices over NemHandel or Peppol.

What we deliver

A complete Denmark integration.

Whether you run an off-the-shelf ERP, a cloud accounting app, or a POS you built in-house, we make it comply with Bookkeeping Act digital invoicing (NemHandel / Peppol), end to end.

Bookkeeping Act readiness

We make your accounting or billing software meet the digital-system requirements of the Act.

NemHandel integration

We connect your software to NemHandel for sending and receiving e-invoices.

Peppol connection

We connect you to the Peppol network where that is the right route for your partners.

OIOUBL / Peppol BIS mapping

We map your invoice data to the accepted formats so documents validate.

Send & receive

Your system can issue and accept structured invoices as the Act requires.

ERP / accounting integration

All of this runs inside your existing accounting or billing software.

Timeline

The Denmark compliance timeline.

Starting before enforcement means a calm cutover. Waiting means doing it under pressure.

Long-standing

B2G via NemHandel

Public-sector e-invoicing has been mandatory for years through NemHandel.

2023

Bookkeeping Act requirement

The Act introduced the compliant-digital-system requirement, including e-invoice send and receive.

Through 2026

Compliance dates

Compliance dates apply through 2026 by business type and system. Confirm with the Danish Business Authority.

Who it is for

Who the Bookkeeping Act digital invoicing (NemHandel / Peppol) rules affect.

Businesses with bookkeeping duties

Companies required to use a compliant digital accounting system able to send and receive e-invoices under the Bookkeeping Act.

Public-sector suppliers (B2G)

Businesses invoicing the public sector, where e-invoicing has long been mandatory via NemHandel.

Users of in-house systems

Businesses running custom or in-house accounting systems that must meet the Act's requirements.

Dates and thresholds change, and scope depends on your exact situation. Treat this page as a starting point, confirm the detail with the Danish Business Authority (Erhvervsstyrelsen), and tell us what you run today, we will tell you plainly what an integration would involve.

How we help

Built into the software you already run.

We make your existing accounting or billing software meet the Bookkeeping Act, connect it to NemHandel and Peppol, and map it to the accepted formats so you can send and receive structured invoices. If your in-house system cannot be adapted, we build one that can.

Because Denmark uses Peppol, the same connection often covers other Peppol countries you trade with.

FAQ

Denmark e-invoicing questions.

Does Denmark mandate B2B e-invoicing?

Not directly. The Bookkeeping Act requires a compliant digital accounting system that can send and receive structured e-invoices, so your software must support it. B2G invoicing has been mandatory for years via NemHandel. Confirm with the Danish Business Authority.

What is NemHandel?

Denmark's national e-invoicing infrastructure, long used for public-sector invoicing, historically in the OIOUBL format, with Peppol BIS now widely used. We connect your software to it.

When do I need to comply?

The Bookkeeping Act's digital-system compliance dates run through 2026 depending on business type and whether you use a registered or in-house system. Confirm your date with the Danish Business Authority.

Can you make my accounting software compliant?

Yes. We make your existing accounting or billing software meet the Act and connect it to NemHandel and Peppol, and we also build compliant systems.

How do I get started?

Email sales@nowgray.com with your accounting or billing software. We will scope the Bookkeeping Act and e-invoicing work.

Get Denmark-ready

Start your Denmark e-invoicing integration.

Tell us what software you run and your timeline. We will scope the integration and get you compliant with Bookkeeping Act digital invoicing (NemHandel / Peppol) well before enforcement reaches you.

Enquiries: sales@nowgray.com · Source of truth: Danish Business Authority (Erhvervsstyrelsen)