Cancel your Flatex subscription by mail
Flatex takes cancellation requests by mailed letter, so a dated certified-mail letter is the record that counts. Flatex receives written requests in Frankfurt am Main, Germany.
Let Postbye cancel Flatex for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
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Postbye is not affiliated with Flatex.
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- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Flatex by mail
Get your account details together
Have the account email, the last four digits of the linked bank account or card and the membership tier to hand. The details in the letter need to match what Flatex has on file.
Draft the request
Flatex is based in Germany, so the letter goes out in German, built from our German template. Subject line: “Betreff: Kündigungsanfrage – [your name]”. It asks for the subscription to end, for further charges to stop and for written confirmation.
Mail it with tracking
Send the letter to the Frankfurt am Main mailing address shown below by certified mail. Keep the tracking number safe.
Hold on to the receipt
File the receipt with the letter. A Flatex charge dated after delivery is the one to dispute, and these two documents are what you quote.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Flatex cancellation letter goes
Flatex lists Große Gallusstraße 16-18, 60312 Frankfurt am Main, Germany as its mailing address.
Frankfurt am Main is in Hessen, Germany; the postal code to quote is 60312.
The letter is addressed “Sehr geehrte Damen und Herren,” and its details block uses the labels Kontoinhaber, Hinterlegte Rechnungsadresse and Hinterlegte E-Mail-Adresse.
Prefer to write it yourself? Use our letter template
Before you cancel Flatex, check these
- Investment and credit-builder products can have their own steps for closing the underlying account.
- Check your bank statement after the cancellation date for any further charge.
- Settle any outstanding balance first. Closing a membership does not clear what you owe.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Flatex for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Cancelling a finance or credit subscription
Finance and credit apps bill a membership fee through a linked account, so the request has to end the membership and the authorisation to take payments.
A mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
Flatex cancellation at a glance
- How Flatex accepts cancellations
- By mailed letter
- Mailing address on file
- Flatex Große Gallusstraße 16-18 60312 Frankfurt am Main Germany
- Country
- Germany
- Letter language
- German (template de)
- Category (from the company name)
- Finance & credit
- Added to the database
- May 19, 2026
- Data last checked
