As of today, Kable relies on our payment partners to calculate tax.
If you connect your Stripe account to Kable, you can enable automatic tax calculation in your Stripe dashboard, and invoices generated by Kable will be taxed by Stripe. As we add other payment partners, we will follow the same pattern. In the future, though, we do plan to add the option to calculate taxes directly within Kable.
Kable uses Stripe's Invoice API directly (we don't create Stripe subscriptions which would cost an extra 0.5%). You can set up Stripe Tax to work with Invoices, and I believe most of what you'd want happens automatically.
I may be wrong though -- please let me know if you've had a different experience!
Integrating Paddle (and other payment providers) is in our plans for the spring. Our existing customers have skewed toward Stripe, so we started there. If you're using Paddle today and want to get started with Kable, let me know and we can chat about prioritizing Paddle sooner
We don't currently have any customers using Kable and GraphQL together. To be totally honest, I'm not a GraphQL expert, and I don't want to give you any false information, so unfortunately no, I don't have an example for you.
Kable can be accessed through our Node and Python libraries (more languages on the way) or over HTTPS REST API. I will have to defer to your design sense about the best way to leverage these technologies with a GraphQL API today.
If you connect your Stripe account to Kable, you can enable automatic tax calculation in your Stripe dashboard, and invoices generated by Kable will be taxed by Stripe. As we add other payment partners, we will follow the same pattern. In the future, though, we do plan to add the option to calculate taxes directly within Kable.