E-Invoicing and the Kleinunternehmerregelung: What Actually Applies to You
Germany's e-invoicing mandate has been rolling out since January 2025, and if you operate under the Kleinunternehmerregelung, you have probably wondered whether any of this actually applies to you. The short answer is: yes and no, and the distinction matters.
You are not required to send structured e-invoices. But you are required to receive them. And if you work with business clients, the reality on the ground is already shifting faster than the official deadlines suggest.
This guide covers what Kleinunternehmer specifically need to know about e-invoicing in Germany in 2026 — what you can ignore, what you cannot, and why getting set up with the right ZUGFeRD invoicing software now is worth doing even if the law does not require it yet.
What Is a Kleinunternehmer Under §19 UStG?
The Kleinunternehmerregelung under §19 of the German VAT Act (Umsatzsteuergesetz) is a VAT exemption available to businesses and self-employed individuals whose revenue stays below certain thresholds. If you qualify, you do not charge VAT on your invoices and you do not file regular VAT returns.
Since January 2025, the qualifying thresholds have been updated under the Wachstumschancengesetz. Your net turnover from the previous year must not have exceeded €25,000, and your expected net turnover for the current year must not exceed €100,000. Both conditions need to be met for the exemption to apply.
The Kleinunternehmerregelung is one of the most common arrangements for freelancers, sole traders, and side-business owners in Germany. It keeps invoicing simple and reduces administrative overhead — which is why so many people starting out in Germany choose it. But simplicity in one area does not mean you can ignore what is changing in another. For a full breakdown of how to invoice correctly under the exemption see our Kleinunternehmerregelung invoicing guide.
Does the E-Invoicing Mandate Apply to Kleinunternehmer?
This is the question most Kleinunternehmer have when they first hear about Germany's e-invoicing rollout. The answer has two parts.
Receiving e-invoices: mandatory since January 2025
Since January 1 2025, every business in Germany — including Kleinunternehmer — must be able to receive structured electronic invoices. This is part of the broader E-Rechnungspflicht introduced by the Wachstumschancengesetz. If a supplier sends you a ZUGFeRD or XRechnung invoice, you are legally required to accept it. You cannot ask them to send a plain PDF instead.
In practice, receiving a ZUGFeRD invoice is not complicated. ZUGFeRD is a hybrid format — it looks exactly like a normal PDF when you open it, but contains embedded machine-readable XML data. Your email inbox already satisfies the minimum requirement for receipt. The more important thing is that you store the original file correctly, since the XML embedded in the document is the legally relevant part under GoBD archiving rules.
Sending e-invoices: Kleinunternehmer are exempt
Kleinunternehmer are exempt from the obligation to send structured e-invoices. This exemption exists because the Kleinunternehmerregelung under §19 UStG sits outside the standard VAT system — the e-invoicing sending mandate is tied to taxable domestic B2B transactions between VAT-registered businesses.
Can a Kleinunternehmer send a ZUGFeRD invoice without VAT? Yes — and doing so is perfectly valid. The VAT exemption is handled in the embedded XML using specific category codes that reflect your §19 UStG status. The question is whether your invoicing software handles this correctly by default.
For a broader overview of how the e-invoicing mandate affects all freelancers see the e-invoicing for freelancers in Germany guide.
Does a Kleinunternehmer Need to Receive E-Invoices?
Yes — without exception. The receiving obligation under the E-Rechnungspflicht applies to all businesses in Germany regardless of VAT status, turnover, or business type. There is no transition period for receiving. Since January 1 2025 you must be able to accept, open, and correctly archive any ZUGFeRD or XRechnung invoice a supplier sends you.
The practical requirement is straightforward. Your email inbox satisfies the minimum technical requirement. What matters is that you retain the original ZUGFeRD file — not just a printed PDF copy — in an audit-proof manner that meets GoBD archiving standards.
The Practical Reality: B2B Peer Pressure in 2026
Here is what the official timeline does not fully capture. Large German companies — and many mid-sized ones — have already updated their procurement and accounts payable systems to process structured e-invoices automatically. If you invoice a company that has made this switch, they may start asking for ZUGFeRD or XRechnung invoices even before any legal deadline requires it of you.
This is already happening in practice. Freelancers and small service providers working with DAX companies, public sector clients, retail chains, and larger agencies are increasingly receiving requests to submit compliant e-invoices. A plain PDF that used to be accepted might get flagged as non-compliant by an automated AP system, or trigger a request from a procurement team to resubmit in the correct format.
Being exempt from a legal obligation to send e-invoices does not mean your clients are exempt from expecting them.
Free ZUGFeRD Invoicing Software for Kleinunternehmer: What to Look For
Not all invoicing tools handle the Kleinunternehmerregelung correctly in their e-invoice output. When you are looking for free ZUGFeRD invoicing software for small businesses in Germany, look specifically for these capabilities.
Correct VAT exemption handling in the XML
The structured XML embedded in your ZUGFeRD invoice needs to reflect your Kleinunternehmer status accurately — not just your invoice PDF. Software that is not designed for §19 UStG invoicing will typically default to a standard 19% VAT rate in the XML even when the PDF shows no VAT. This creates a technically non-compliant invoice that looks correct when printed but fails structured validation.
Look for software that explicitly supports §19 UStG invoicing in the embedded XML output, not just the PDF template.
ZUGFeRD 2.4 or Factur-X 1.0.8 support
ZUGFeRD 2.4 and Factur-X 1.0.8 are the current versions of the Franco-German hybrid e-invoicing standard, released in January 2026. These versions are EN 16931 compliant and ready for both the German and French e-invoicing mandates. Software that only supports older ZUGFeRD versions or claims compliance without specifying a version is worth scrutinising more closely. For a detailed comparison of ZUGFeRD versus XRechnung see our format comparison guide.
No paywall for e-invoicing features
Some tools charge extra for e-invoicing compliance or limit the number of compliant invoices you can send per month on their free plan. For a Kleinunternehmer sending a modest number of invoices, paying extra for what is essentially a legal requirement makes little sense. Look for invoicing software where compliant ZUGFeRD output is included on every plan — including the free one.
Multilingual invoice documents
If you work with clients outside Germany, being able to send invoice documents in English, French, or other languages matters. The structured XML stays the same regardless of the document language, but your client sees the PDF — and a German-only invoice sent to a Danish or French client adds unnecessary friction. For a full rundown of what must appear on every German invoice see the mandatory invoice fields guide.
ZUGFeRD and the Kleinunternehmer VAT Exemption: How It Works in the XML
This is where Kleinunternehmer invoicing gets technical in a way that most guides skip over. When you issue a ZUGFeRD invoice as a Kleinunternehmer, the embedded XML data must correctly reflect your VAT status — not just the visible PDF.
A standard ZUGFeRD invoice includes VAT rate and VAT amount fields in the XML. For Kleinunternehmer invoicing without VAT under §19 UStG, these fields need to be handled differently. The VAT category code in the XML should reflect the exemption, and the embedded data should include the legal basis for why no VAT is being charged.
An invoice where the PDF shows no VAT but the XML defaults to 19% would be technically non-compliant, even if it looks correct when printed. This is one of the most common issues with generic invoicing software that was not designed with Kleinunternehmer in mind.
Checking that your software handles this correctly before sending your first ZUGFeRD invoice to a business client is worth doing. You can verify the XML output using the free Facturwise validator which checks every EN 16931 Business Term field by field.
Why Sending E-Invoices Voluntarily Makes Sense Right Now
Even though you are not legally required to send structured e-invoices as a Kleinunternehmer, there are practical reasons to start doing it anyway.
Clients with automated invoice processing handle ZUGFeRD invoices faster than plain PDFs. Faster processing means faster payment. For freelancers managing cash flow carefully, the difference between a 30-day and a 45-day payment cycle on a regular client can matter more than the time it takes to set up the right invoicing tool.
It also future-proofs your workflow. If you eventually cross the Kleinunternehmer revenue threshold and switch to regular VAT, the e-invoicing sending obligation kicks in automatically. Having a setup already in place means you will not be scrambling to migrate at the same time as everything else changes. For the full EU-wide timeline see the e-invoicing deadlines overview.
If your invoicing software supports ZUGFeRD at no extra cost, there is no reason not to use it.
E-Invoicing for Kleinunternehmer: Timeline Summary
Since January 1 2025 — The E-Rechnungspflicht receiving obligation applies to all businesses including Kleinunternehmer. You must be able to accept, read, and archive structured e-invoices from suppliers. No transition period applies to receiving.
Throughout 2026 — You can still send invoices as plain PDFs. However, clients above €800,000 turnover are already required to handle e-invoice receipt, meaning their systems are increasingly configured for structured input. Voluntary ZUGFeRD sending avoids future friction with these clients.
From January 2027 — Businesses above €800,000 turnover must send structured e-invoices. Your largest business clients will be issuing ZUGFeRD or XRechnung invoices to you from this point.
From January 2028 and beyond — Kleinunternehmer are confirmed exempt from the e-invoice sending obligation beyond January 2028 under current legislation. The Annual Tax Act explicitly preserves this exemption — Kleinunternehmer can continue sending plain PDF or paper invoices beyond this date. The receiving obligation remains in force regardless.
Cross-Border Invoicing as a Kleinunternehmer: Germany and France
If you invoice clients in France as well as Germany, there is a practical advantage worth knowing about. ZUGFeRD and Factur-X are technically identical from version 2.1 onwards. A ZUGFeRD 2.4 invoice and a Factur-X 1.0.8 invoice are the same document under two different national names.
This means a single compliant e-invoicing setup covers both markets simultaneously. You do not need separate tools for German and French clients. One invoice workflow handles the German E-Rechnungspflicht and the French facturation électronique mandate simultaneously.
France's e-invoicing mandate takes effect from September 2026 for receipt and September 2027 for sending. If you have French clients, the same ZUGFeRD software you set up for Germany already handles Factur-X compliance for France. For the full picture of France's e-invoicing rules see our Factur-X and auto-entrepreneur guide.
Frequently Asked Questions
Do Kleinunternehmer need to send ZUGFeRD invoices?
No. Kleinunternehmer are exempt from the obligation to send structured e-invoices — and this exemption is confirmed beyond January 2028 under current legislation. You can continue sending plain PDF invoices. However you must be able to receive structured e-invoices since January 2025.
Does a Kleinunternehmer need to receive e-invoices?
Yes — without exception since January 1 2025. The receiving obligation applies to all German businesses regardless of VAT status. There is no transition period for receiving. You must be able to accept, read, and archive ZUGFeRD and XRechnung invoices from suppliers.
Can a Kleinunternehmer send a ZUGFeRD invoice without VAT?
Yes. ZUGFeRD supports VAT-exempt invoices when the software is configured correctly for Kleinunternehmer status. The embedded XML uses specific VAT category codes to reflect the §19 UStG exemption. Not all software handles this correctly by default — verify before your first ZUGFeRD invoice goes out.
What is the best free ZUGFeRD invoicing software for Kleinunternehmer?
Look for software that includes ZUGFeRD 2.4 compliance on every plan including free, correctly handles §19 UStG VAT exemption in the embedded XML, and supports multilingual invoice documents for cross-border clients. Paying extra for e-invoicing compliance features makes no sense for a Kleinunternehmer operating within the free plan limits.
What format do I need for German e-invoices?
ZUGFeRD 2.x (version 2.0.1 or higher) and XRechnung are the accepted formats for German B2B e-invoices. ZUGFeRD is generally the more practical choice for Kleinunternehmer because it is a hybrid format — your client receives a normal-looking PDF, but the embedded XML satisfies the structured e-invoice requirement.
Do Kleinunternehmer need to file VAT returns?
No. Since 2025 Kleinunternehmer are no longer required to file annual VAT returns. The last annual VAT return obligation was for the 2023 tax year. This change was introduced alongside the updated revenue thresholds as part of the same Wachstumschancengesetz reform. Note that if you had reverse charge transactions with EU suppliers you may still need to submit a VAT declaration for those specific transactions — check with your Steuerberater if this applies to you.
What happens if I exceed the Kleinunternehmer threshold?
If your net turnover crosses the qualifying threshold during the year, you lose your Kleinunternehmer status from the following year and must charge VAT on all invoices. At that point the e-invoicing sending obligation will also apply depending on your turnover level. Having an e-invoicing setup already in place makes that transition significantly smoother.
Do I need to archive e-invoices I receive as a Kleinunternehmer?
Yes. E-invoices you receive must be stored in their original format — the complete ZUGFeRD PDF or XRechnung XML file. Storing just a PDF printout or visual copy is not sufficient under GoBD archiving rules.
Does the Kleinunternehmerregelung apply in France too?
France has an equivalent called the franchise en base de TVA, which operates on the same principle — VAT-exempt invoicing below certain revenue thresholds. French auto-entrepreneurs operating under this regime are still subject to France's e-invoicing mandate from September 2026 for receiving and September 2027 for sending, regardless of their VAT-exempt status.
Getting Your E-Invoicing Right as a Kleinunternehmer
The e-invoicing transition in Germany is not going to reverse. The E-Rechnungspflicht receiving obligation is already in force, client expectations are shifting ahead of the sending deadlines, and the right tools are available at no cost for Kleinunternehmer who do not need a large feature set.
The practical question is not whether to get set up — it is whether to do it now while it is straightforward, or later when your first client rejects a plain PDF and you are scrambling to figure out which ZUGFeRD format they need.
Facturwise generates ZUGFeRD 2.4 and Factur-X 1.0.8 compliant e-invoices with correct handling of Kleinunternehmer VAT exemptions in both the visible PDF and the embedded XML. Every plan includes e-invoicing compliance — no add-ons, no configuration, no paid upgrades. Start invoicing German and French clients for free at facturwise.com.
This article reflects rules and guidance in effect at the time of publication (April 2026). Tax regulations can change — consult a qualified tax advisor for your specific situation.
Facturwise generates ZUGFeRD 2.4 and Factur-X 1.0.8 e-invoices with correct Kleinunternehmer VAT exemption handling — in both the PDF and the embedded XML. Every plan includes full e-invoicing compliance, no add-ons required. Start sending compliant e-invoices for free.