Leitweg-ID: The Key to Your B2G Invoices

You've created your first e-invoice in XRechnung format and are ready to send it to a public client? Then you've probably already stumbled upon the mandatory field "Leitweg-ID."

Without this number, your invoice won't arrive. In this post, we'll explain simply and concisely what the Leitweg-ID is, how it's structured, and - most importantly - where you can find it.

What Is the Leitweg-ID Actually?

Think of the Leitweg-ID like a digital house number. Since public administration in Germany is federally and highly complexly structured, a name as recipient is not sufficient.

The Leitweg-ID ensures that your e-invoice is routed exactly to the right place within the authority landscape - from the small invoice auditing office to the central federal treasury.

The Structure: More Than Just a Random Number

A Leitweg-ID is built according to a fixed standard. Here's an example: 05315-01234-51

• Coarse addressing (e.g., 05): Shows which federal state the recipient is in (e.g., NRW)
• Fine addressing: Identifies the specific authority or agency
• Check digit: Ensures the number was entered correctly

Where Do You Find Your Customer's Leitweg-ID?

The most important rule first: The authority must provide you with the Leitweg-ID. There's no public "phone book" for all IDs.

Here's where you usually find the number:

In the Order Letter

Look in the order confirmation or contract. The Leitweg-ID is often listed in the header or with the payment information.

In the Procurement Documents

For tenders, the ID is often in the fine print - look for sections like "Invoicing" or "E-Invoice."

On the Authority's Website

Many cities and municipalities have an info page on "E-Invoice" with their Leitweg-ID.

Ask

When in doubt, a quick call to the responsible case worker helps.

Pro tip: Save the Leitweg-ID directly in your customer's master data in Clever Invoice to avoid errors on future invoices.

Where Is the Leitweg-ID Entered?

In an XRechnung, there's a special technical field for this information: the Buyer Reference field.

If you use an online invoicing portal (like the federal ZRE or OZG-RE), there's an explicitly labeled field "Leitweg-ID" there. Without this entry, the sending process usually can't even be completed.

Tip: Check your XRechnung before sending with our free E-Invoice Validator.

Why Is the ID So Important for B2G Invoices?

Since the introduction of the e-invoicing obligation for the federal government and many states, invoices without a correct Leitweg-ID are automatically rejected. This means for you:

• Delayed payments - Your invoice won't be processed
• Manual extra effort through corrections and resending
• Possible late fees or loss of early payment discounts

Conclusion: No Panic About the ID

The Leitweg-ID is not a technical monster, but merely the navigation system for your invoice. Once you've stored the number in your system once, the process runs automatically.

With Clever Invoice, you save the Leitweg-ID once per customer and don't have to worry about it for future invoices. The software automatically inserts it into your XRechnung.

Start now: Create XRechnungen with Leitweg-ID - simple and error-free with Clever Invoice.