> For the complete documentation index, see [llms.txt](https://docs.biodock.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.biodock.ai/user/billing.md).
# Billing
{% hint style="info" %}
Biodock uses Stripe to collect your payment information. We never store, process, or even see your sensitive payment information.
{% endhint %}
### Billing and Payments
#### Adding a Payment Method
To add a payment method:
1. Navigate to **Settings → Billing**.
2. Click **Add Billing Method**.
3. You will be redirected to **Stripe**, where you can securely add a credit card or another supported payment method.
Adding a payment method allows you to purchase additional Run Credits and Storage when needed. Your payment method will only be charged when you complete a purchase.
#### Purchasing Additional Credits and Storage
Academic users can purchase additional **Run Credits** and **Storage** at any time from the **Billing** page in their account settings.
**Run Credits**
Run Credits are available through two purchase options:
* **Annual Subscription** – Renews automatically each year and offers a lower cost per credit.
* **One-Time Purchase** – A single, non-recurring purchase.
**Storage**
Additional Storage is available through an **Annual Subscription**, which renews automatically each year.
#### Subscription Renewals and Cancellations
Subscription plans renew automatically at the end of each billing period. If you do not wish to renew your subscription, please cancel it before the renewal date.
> Refunds are not available for subscription purchases.
---
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