Checkout V3:


The latest version of the checkout pages supports sign up without entering payment details when there are no ‘immediate charges’. To enable this, navigate to Settings > Configure Chargebee > Checkout & Self Service Portal > Allow customers to checkout without payment details.


More on this here.



Note:

This feature is applicable only for new subscriptions created through checkout.

The total checkout value should be "0" or no immediate charges eg; a trial.



Checkout Pages V2:


Sign-up without payment details is not directly supported on the earlier version of the checkout pages. However, you can set this up by building a form on your website to collect the customer's name and email address and create the trial subscription.


Attached is a sample sign up page with the code to create trial subscriptions without a credit card. Similarly, you can build your own form.


In the attachment, if you browse to "trial_signup > chargebee_js > signup.html", you will see a code similar to what I've pasted below.





The changes you need to make for this sample sign up form to work(indicated with arrows above) are:


1. Your Chargebee site name (only the sub-domain name).

2. A publishable API key. You can create one under Settings > Configure Chargebee > API keys > Add API Key.

3. Your trial plan ID. You will find this when you open your trial plan under "Product Catalog".


When creating a publishable API key, please ensure that you check the option "Use From Browser" as shown below:





And also select the option "Publishable API Key".




Related post: https://support.chargebee.com/discussions/topics/304854