# KfW fax numbers for Frankfurt, Bonn and Berlin contacts

Find KfW office fax numbers for Frankfurt, Bonn and Berlin.

Country: Germany
Category: Financial
Last reviewed: 2026-10-04 (published sources, not a test transmission)

## Which KfW fax number should I use?

These are office contacts. They do not establish a universal KfW loan or grant application route. Check the program: an application may need to go through a financing partner or another designated channel.

## Frankfurt headquarters

Fax: +49 69 74312944
E.164: +496974312944

Frankfurt headquarters at KfW.

Use only when: These are branch contact faxes, not a general loan-application intake. Confirm the program and whether applications must go through your financing partner.

[KfW: official contact or submission instructions](https://www.kfw.de/About-KfW/Contact/) — reviewed 2026-10-04

## Bonn branch

Fax: +49 228 8319500
E.164: +492288319500

Bonn branch at KfW.

Use only when: These are branch contact faxes, not a general loan-application intake. Confirm the program and whether applications must go through your financing partner.

[KfW: official contact or submission instructions](https://www.kfw.de/About-KfW/Contact/) — reviewed 2026-10-04

## Berlin branch

Fax: +49 30 202645188
E.164: +4930202645188

Berlin branch at KfW.

Use only when: These are branch contact faxes, not a general loan-application intake. Confirm the program and whether applications must go through your financing partner.

[KfW: official contact or submission instructions](https://www.kfw.de/About-KfW/Contact/) — reviewed 2026-10-04

## What to include in your fax to KfW

Send correspondence requested by the office handling your case. Submit funding applications and supporting documents through the program’s stated application process.

## Check the destination and prepare your cover page

Name the KfW department, your contact person if known, the document title and the total page count. Provide a callback number. Put personal, policy or account details only where the recipient’s form requires them.

Check the official source and recipient instructions before sending. A reviewed source confirms a published number, not live availability.

## Confirm delivery and follow up with KfW

These are fax destinations, not voice support lines. Keep the transmission result and a copy of the documents. Confirm with the receiving department that the packet is complete and can be processed; a delivery receipt does not establish acceptance or a decision. Check with that department before sending a duplicate.

## How to fax KfW without a fax machine

Prepare a legible PDF, verify the department and number, review the pages and authorize sending. DearFax supports [online sending](https://dearfax.com/send-fax-online) and workflows with [ChatGPT](https://dearfax.com/chatgpt) or [Codex](https://dearfax.com/codex) through [MCP](https://dearfax.com/mcp). Retain the transmission result.

## Frequently asked questions

### What KfW fax number should I use?

Frankfurt headquarters: +49 69 74312944. Bonn branch: +49 228 8319500. Berlin branch: +49 30 202645188. These are office contacts. They do not establish a universal KfW loan or grant application route. Check the program: an application may need to go through a financing partner or another designated channel.

### Can I apply for any KfW loan by faxing headquarters?

No universal loan intake is established by the office contact. Follow the specific program’s application instructions, including any financing-partner requirement.

### What documents can I fax to KfW?

Send correspondence requested by the office handling your case. Submit funding applications and supporting documents through the program’s stated application process.

### What should I put on a fax cover page for KfW?

Name the KfW department, your contact person if known, the document title and the total page count. Provide a callback number. Put personal, policy or account details only where the recipient’s form requires them.

### How can I fax KfW without a fax machine?

Prepare your documents as a legible PDF and confirm the recipient’s submission requirements. You can use DearFax in your browser or prepare the fax with ChatGPT or Codex through MCP. Review the number and pages before authorizing the send, then keep the transmission result. Delivery does not confirm that the recipient accepted or processed your request.

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