One-Click Cash Payments!

GNU Taler is an electronic payment system under development at Inria. We expect to make it operational in 2018. You can learn about Taler on this website, try the demo and look at our documentation.

Practical

Taler is easy to integrate with existing Web applications. Payments are cryptographically secured and are confirmed within milliseconds with extremely low transaction costs.

Stable

Taler does not introduce a new currency. Taler uses a digital wallet storing coins and payment service providers with escrow accounts in existing currencies. Thus, Taler's cryptographic coins correspond to existing currencies, such as US Dollars, Euros or even Bitcoins.

Secure

By design Taler does not suffer from many classes of security problems such as phishing or counterfeit. Thanks to its security features, Taler never rejects a legitimate customer due to a fraud-detection false positive.

Taxable

When using Taler, merchant's revenue is transparent for tax collection authorities. Unlike cash and most digital currencies, Taler helps prevent black markets. Taler is not suitable for illegal activities.

Private

When you pay with Taler, your identity does not have to be revealed. Just like payments in cash, nobody else can track how you spent your electronic money. However, you obtain a legally valid proof of payment.

Libre

Taler provides protocols and reference implementations that in principle enables anybody to run their own payment infrastructure, be it individuals, organizations or whole countries. Since the reference implementation is a GNU package, it will always remain free software.

Paying with Taler

To pay with Taler, customers install an electronic wallet on their device. Before the first payment, the desired currency must be added to the wallet's balance by some other means of payment.

Once the wallet is charged, payments on websites take only one click, are never falsely rejected by fraud detection and do not pose any risk of phishing or identity theft.

Receiving payments with Taler

To receive Taler payments, a merchant needs a bank account in the desired currency. We provide supporting software in various programming languages to make the integration painless. The merchant's backend for Taler transaction processing can run on the merchant's premises or be hosted by a third party.

Taler News

2017-10: GNU Taler v0.5.0 released

We are happy to announce the release of GNU Taler v0.5.0. The main new feature is customer tipping, which allows merchants to pay small rewards directly into a customer's wallet. Technical improvements include numerous performance improvements and bug fixes, as well as a new, simpler to use API for merchants that also enables the implementation of GNU Taler wallets on platforms that do not support WebExtensions.
The Chrome and Chromium wallets are available for download via the App store. The exchange, merchant backend and bank components are on the GNU FTP mirrors.

2017-10: GNU Taler v0.4.0 released

We are happy to announce the release GNU Taler v0.4.0 with support for customer refunds, protocol versioning, incremental key material download, returning funds from the wallet directly back into one's bank account, and various other minor improvements. The Chrome and Chromium wallets are available for download via the App store. The exchange, merchant backend and bank components are on the GNU FTP mirrors. Note that the Firefox wallet will take a few more days to become available in the App store due to the Mozilla review process.

2017-08: We explain GNU Taler at SHA 2017

"Taler" by Jeff Burdges, Christian Grothoff and Sereni-T, produced by c3voc.de is licensed under a Creative Commons Attribution NoDerivatives 3.0 Unported License.

2017-04: Sva explains GNU Taler at EasterHegg and Torsten demonstrates it is child's play

"Taler" by Sva, produced by c3voc.de is licensed under a Creative Commons Attribution NoDerivatives 3.0 Unported License.

2017-03: Sva explains GNU Taler at FOSSASIA in Singapore

"Taler" by Sva, produced by Engineers.SG is licensed under a Creative Commons Attribution NoDerivatives 3.0 Unported License.

2017-02: Florian Dold explains Taler at 50p in Bangalore

"Taler" by Florian Dold, produced by 50p is licensed under a Creative Commons Attribution NoDerivatives 3.0 Unported License.

2017-01: Taler Documentation pages updated

docs.taler.net is now online, providing a new portal to the Taler system documentation.