> ## Documentation Index
> Fetch the complete documentation index at: https://sigma-docs.pastelhq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Billing

> Sigma uses a wallet system linked to your company account

### How Billing Works

Sigma uses a **pay-per-request** model with a centralised company wallet. You fund the wallet in advance, and Sigma deducts the cost of each successful API request automatically.

You are only charged when a request is successfully processed. Failed requests due to invalid authentication or malformed payloads do not consume wallet balance.

**Centralised wallet:** A single wallet covers all your applications and all Sigma products. You do not need separate accounts or balances for Transaction Monitoring, AML, CDD, and Reporting. One top-up funds everything.

### How to Fund Your Wallet

1. Log in to [Sigma](https://sigma.pastelhq.ai/)
2. Click **My Account → Billing**
3. Click **Fund Wallet**
4. Enter the amount you want to add
5. Add a card and complete payment securely
6. Your updated balance appears immediately on the Billing Overview page

### Monitoring Your Usage

The **Billing Overview** page shows:

* **Current balance**: how much credit remains in your wallet
* **Plan details**: your current plan and expiration date
* **Billing history**: a log of all top-ups and deductions
* **Request transactions**: a breakdown of API usage by product and date

Review your usage regularly to ensure you have sufficient balance, especially before high-volume periods or before running bulk operations like batch CDD runs or bulk AML searches.

### Keeping Your Wallet Funded

Running out of wallet balance will cause API requests to fail. To avoid disruption:

* Top up your wallet before it runs low. There is no automatic recharge.
* Monitor the billing dashboard after large batch operations
* Consider maintaining a minimum buffer based on your average daily API volume

### Pricing

Pricing is based on the volume and type of API requests. For detailed pricing information, contact the sales team.

[Contact Sales →](mailto:partnership@pastelhq.ai)