> For the complete documentation index, see [llms.txt](https://docs.stammer.ai/stammer.ai-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.stammer.ai/stammer.ai-docs/account-management.md).

# Account Management

- [Billing Usage & Settings](https://docs.stammer.ai/stammer.ai-docs/account-management/billing-usage-and-settings.md): The billing usage & settings tab is shown to both sub-accounts and agencies to manage their payments.
- [Agency Billing](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-billing.md): Agency billing describes all of the information related to a Stammer.ai subscription.
- [Subscription Plans](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-billing/subscription-plans.md): Learn how much each stammer.ai plan costs and the features included.
- [Change Subscription Plan](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-billing/change-subscription-plan.md)
- [Update Credit Card](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-billing/update-credit-card.md): Update or change the credit card on file for your wallet and to pay for your Stammer.ai subscription
- [Download Invoice](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-billing/download-invoice.md)
- [Refunds](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-billing/refunds.md): Learn more about how you can get a refund if you are unhappy with Stammer.ai
- [Cancel Subscription](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-billing/cancel-subscription.md): How to cancel your Stammer.ai subscription.
- [Agency Wallet](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-wallet.md): The agency wallet is how the usage-based billing system for Stammer.ai works.
- [The Agency Wallet System](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-wallet/the-agency-wallet-system.md): The wallet is used to pay for AI messages sent, extra storage and extra AI agents.
- [Agency vs Sub-Account Wallet](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-wallet/agency-vs-sub-account-wallet.md): How the agency and sub-account wallets work inside Stammer.ai
- [Auto Billing](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-wallet/auto-billing.md)
- [Add Funds to Wallet](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-wallet/add-funds-to-wallet.md)
- [AI Messages Costs](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-wallet/ai-messages-costs.md): The cost of each AI message sent depends on which AI model is being used and will reduce your agency's wallet balance accordingly.
- [AI Agents Costs](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-wallet/ai-agents-costs.md)
- [Storage (Characters) Costs](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-wallet/storage-characters-costs.md): The cost of additional storage will be billed directly from the available wallet balance.
- [Admin Account Profile](https://docs.stammer.ai/stammer.ai-docs/account-management/admin-account-profile.md)
- [Change Password](https://docs.stammer.ai/stammer.ai-docs/account-management/admin-account-profile/change-password.md): Forgot how to login? Easily change and reset your password.
- [Google Auth Login](https://docs.stammer.ai/stammer.ai-docs/account-management/admin-account-profile/google-auth-login.md)