Germany E-Invoicing for Small Businesses and Kleinunternehmer: 2026–2028 Rules
Understand Germany e-invoicing rules for small businesses and Kleinunternehmer, including the €800,000 threshold, receiving, issuing transition, exceptions, and preparation.
Table of Contents
Small businesses often ask a simple question:
"Does Germany's E-Rechnung mandate apply to me?"
The answer is not simply yes or no.
Germany gives certain smaller businesses more time to move to mandatory E-Rechnung issuance. For transactions performed in 2027, an issuer whose total turnover in the preceding calendar year did not exceed €800,000 may use the extended transition, subject to the statutory conditions.
Kleinunternehmer also have specific rules.
But there is one point small businesses should not miss:
Not having to issue an E-Rechnung does not mean you can ignore receiving E-Rechnungen.
The receiving requirement has applied since January 1, 2025.
Key Takeaways
- German domestic businesses generally need to be able to receive E-Rechnungen from January 1, 2025.
- For transactions performed in 2027, issuers with previous-calendar-year total turnover of no more than €800,000 may use the extended transition, subject to the statutory conditions.
- The extended transition ends on December 31, 2027. It is not a permanent small-business exemption.
- Qualifying Kleinunternehmer generally do not have to issue E-Rechnungen for their supplies under the mandatory issuing rule, but they must still be able to receive them.
- A PDF is a “sonstige Rechnung,” not an E-Rechnung, even where its use is permitted during a transition period.
- B2C, B2G, cross-border, tax-exempt, small-value, and other exceptional transactions require separate analysis.
- Businesses should preserve the structured invoice data and maintain a retrievable accounting record.
Scope: This article focuses on German VAT rules for domestic B2B transactions. Separate requirements may apply to B2G invoices, cross-border transactions, sector-specific procurement, and invoices involving foreign businesses or foreign establishments.
Does Germany E-Invoicing Apply to Small Businesses?
Yes, but the practical deadline can differ.
For domestic B2B transactions covered by the mandatory issuing rule, the extended transition ends on December 31, 2027. From January 1, 2028, the invoice generally must be issued as an E-Rechnung unless another statutory exception applies.
The rules do not apply identically to every invoice or customer. Exceptions include, among others:
- B2C transactions
- Certain tax-exempt transactions
- Small-value invoices up to €250 gross
- Certain passenger transport documents
- Invoices for services supplied by Kleinunternehmer
- Certain invoices to non-business legal persons
- Specific transactions involving final consumers and property-related services
Businesses should therefore determine whether the particular transaction falls within the mandatory issuing rule before treating January 1, 2028 as a general deadline.
What Is the €800,000 Rule?
For the 2027 extended transition, the invoice issuer's previous-calendar-year total turnover must not exceed €800,000.
For transactions performed in 2027, the relevant reference year is generally 2026. The threshold applies to the issuer’s total turnover, not simply B2B turnover or the value of an individual invoice.
In practical terms, first check the issuer’s 2026 total turnover, then determine whether the statutory conditions for the 2027 transition are met.
This is based on total turnover, not simply the value of one invoice.
What About Kleinunternehmer?
Kleinunternehmer have specific rules under the German VAT framework.
Invoices for services supplied by a business applying the German Kleinunternehmer regime are among the transactions that do not have to be issued as E-Rechnungen under the mandatory issuing rule. This is an exception from the mandatory E-Rechnung issuing requirement, not a general exemption from invoicing or all digital-record obligations.
They must still be able to receive E-Rechnungen.
The result may change if the business no longer qualifies as a Kleinunternehmer or opts for regular VAT taxation.
Can a Small Business Still Send PDFs?
During the relevant transition period, a paper invoice remains possible. A PDF or other non-structured electronic format generally requires the recipient’s consent. The transition permission does not turn the PDF into an E-Rechnung.
From January 1, 2025 to December 31, 2026, eligible issuers may generally continue using paper invoices or, with recipient consent, a non-E-Rechnung electronic format such as PDF.
For transactions performed in 2027, the extended option applies only where the issuer’s total turnover in the preceding calendar year did not exceed €800,000, subject to the statutory conditions.
From January 1, 2028, the transition ends for covered transactions unless another statutory exception applies.
The statutory transition is a legal permission, not a guarantee that every customer will accept paper or PDF invoices. Commercial contracts, procurement requirements, or customer onboarding rules may require structured invoicing earlier.
What Should Freelancers Do?
Freelancers should first determine whether they fall under the Kleinunternehmer rules and whether the transaction is B2B or B2C.
Then check:
- Business status
- Customer type
- Transaction
- Applicable exception
- Applicable transition
- Appropriate invoice format
A freelancer working only with private consumers may have a very different e-invoicing situation from a freelancer billing German companies.
Receiving Supplier E-Rechnungen
An E-Rechnung may be transmitted by email, and an email inbox is sufficient to satisfy the basic ability-to-receive requirement. The business must still preserve the structured invoice data and maintain an appropriate accounting and archiving process.
A practical receiving process can include:
- Receive the invoice.
- Check the invoice and its structured data.
- Record or import the data into the accounting system.
- Approve the invoice where required.
- Retain the original structured data.
If the business receives many invoices, automation can reduce manual data entry.
Small Business ERP Requirements
A small business does not necessarily need a large enterprise ERP to prepare for German e-invoicing.
A practical system should ideally be able to:
- Receive structured invoices
- Display and process invoice information
- Preserve the original structured data
- Support appropriate accounting records
- Handle the formats and workflows relevant to the business
Technical validation is recommended because it helps detect missing or logically inconsistent data, although validation by a particular tool is not itself a statutory condition for tax recognition.
An e-invoicing platform can provide missing capabilities without requiring a complete system replacement.
Small Business Preparation Checklist
Start with:
- Identify B2B customers
- Check previous-year turnover
- Check Kleinunternehmer status
- Prepare receiving
- Review accounting software
- Choose format
- Test validation
- Prepare archiving
The practical process is:
Accounting software sends the invoice data to the e-invoicing platform, where it is converted into the required structured invoice format and validated before being sent to the customer.
Why Waiting Can Still Be Risky
The extended transition gives time, but implementation can still take weeks or months.
A small business may need to update:
- Accounting or invoicing software
- Customer and supplier data
- Invoice processes
- Accounting workflows
- Staff procedures
- Archiving controls
Starting early gives the business room to fix problems without rushing.
Complyance for Small Businesses
Depending on the accounting system and integration setup, an e-invoicing platform can provide an additional compliance and exchange layer without requiring a full accounting-system replacement.
For example:
Accounting software sends the invoice data to Complyance, where it is converted into a structured E-Rechnung and validated before being sent to the customer.
For incoming invoices:
The supplier sends the E-Rechnung to Complyance, which receives and validates it before the invoice is transferred to accounting and archived.
This can help small teams manage structured invoices without building their own integration.
What Small Businesses Should Do in 2026 and 2027
The transition period gives small businesses time to prepare.
A simple roadmap is:
2026: Understand the rules
2026: Prepare receiving
2026/2027: Clean and verify accounting data
2027: Test structured issuing where applicable
End of 2027: Complete production readiness for the 2028 requirement
This is easier than trying to change everything in December 2027.
Small Business and Cash Flow
E-invoicing can also affect cash flow.
A rejected or incorrectly addressed invoice can delay payment.
A structured and validated invoice can reduce avoidable errors.
For a small business, even a few delayed invoices can matter.
That makes validation and delivery tracking useful business controls, not just compliance features.
What a Small Business Does Not Need
A small business does not necessarily need to build its own XML engine, Peppol connection, or validation system.
A practical approach can be:
The accounting software sends the invoice data to the e-invoicing platform, which prepares and transmits the E-Rechnung to the customer.
The right setup depends on the business’s transaction volume, accounting system, customer requirements, and integration needs.
Small Business Record Keeping
Small businesses should include E-Rechnung records in their normal accounting controls.
For VAT purposes, businesses generally need to retain invoices for eight years. For an E-Rechnung, at least the structured part must be preserved in its original form and remain retrievable. Other commercial, tax, or sector-specific retention requirements may also apply.
Keep the original structured invoice and make sure the accounting record can be traced back to it.
The process should remain simple:
The invoice should be recorded in accounting, archived securely, and kept easy to retrieve.
A small business does not need a complicated system to achieve this, but it does need a consistent process.
When Should a Small Business Move Early?
There is no need to wait for the last day of the transition.
Moving earlier can be useful when the business:
- Has many B2B customers
- Receives many supplier invoices
- Uses cloud accounting
- Sells across several countries
- Wants to reduce manual entry
- Needs better invoice tracking
The right level of technology depends on the business, not just its size. Earlier automation may be especially useful for businesses with many B2B customers, high invoice volumes, multiple systems, cross-border activity, or a need for better invoice tracking.
The right level of technology depends on the business, not just its size.
How Complyance Helps
Complyance is designed to make e-invoicing practical for businesses of different sizes.
A small business can keep its accounting system and add a dedicated e-invoicing layer:
The existing accounting system can send invoice data to Complyance for validation and preparation before transmission.
That means the business can prepare for the German requirement without turning compliance into a large IT project.
Conclusion
Small businesses have more time in some areas, but they still need a plan.
The important distinction is:
Issuing transition ≠ receiving exemption
For covered domestic B2B transactions, the turnover-based extended transition applies to qualifying 2027 transactions and ends on December 31, 2027. From January 1, 2028, covered transactions generally need to be invoiced as E-Rechnungen unless another statutory exception applies.
Prepare the receiving process now, understand your turnover and VAT status, identify applicable exceptions, and use the transition period to test your future invoice workflow.
Frequently Asked Questions
Domestic businesses generally fall within the German E-Rechnung framework for covered B2B transactions. For transactions performed in 2027, an issuer whose previous-calendar-year total turnover did not exceed €800,000 may use the extended transition and issue a paper invoice or, with the recipient’s consent, a non-structured electronic invoice. From January 1, 2028, the transition ends, subject to statutory exceptions.
Invoices for services supplied by qualifying Kleinunternehmer are among the transactions that do not have to be issued as E-Rechnungen under the mandatory issuing rule. The business must still issue compliant invoices where required and must be able to receive E-Rechnungen.
Yes. A business applying the Kleinunternehmer regime must still be able to receive E-Rechnungen from January 1, 2025. An email inbox can satisfy the basic receiving capability, although the business also needs an appropriate process for checking, recording, and retaining the structured data.
A freelancer may be able to send a PDF where the transaction is outside the mandatory E-Rechnung scope, where a statutory exception applies, or where a transition provision applies. A PDF is not itself an E-Rechnung. For a domestic B2B transaction, recipient consent is generally needed when using a PDF as a non-structured electronic invoice during the transition.
The turnover-based extended transition ends on December 31, 2027. It applies to transactions performed in 2027 where the issuer’s total turnover in the preceding calendar year did not exceed €800,000. It does not create a permanent exemption for small businesses.
About the Author
Swathy
Content Marketer
I’m a Content Marketer at Complyance, focused on e-invoicing. Over the years, I’ve created a wide range of content, including blog posts, whitepapers, and product guides, which have supported Complyance’s growth across markets such as the UAE and EU regions. My goal is to deliver content that is comprehensive, clear, accurate, and easy to understand, no matter how complex the topic.
