> For the complete documentation index, see [llms.txt](https://docs.avis.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.avis.xyz/guide/get-started/avis-topup.md).

# How to top up your balance

Avis runs on prepaid credits, you top up a balance, and usage across the API and toolkit draws down from it. You can add credits, review your balance, and download invoices from the **Credits & Billing** page, with payment via MoMo or VNPAY.

**Step 1:** Go to [avis.xyz/profile/credits](https://www.avis.xyz/profile/credits), or open [your profile](https://www.avis.xyz/profile/) and click **Credits & Billing**.

<figure><img src="/files/rye9Yc81k2jsEK3u4GNG" alt=""><figcaption></figcaption></figure>

Here you can see your **total balance** and your **invoice history**.

***

## How to Top Up

**Step 1:** Click the **Top Up** button.

<figure><img src="/files/lUCRIBQesnwxNXNZzEy4" alt=""><figcaption></figcaption></figure>

**Step 2:** Configure your payment:

1. Choose a payment provider, currently **MoMo** and **VNPAY** are supported
2. Enter the amount you want to top up.
3. If you don't need an invoice, untick the **Request VAT Invoice** option.

**Note:** A **10%** VAT applies and is included directly in your purchase total.

<div><figure><img src="/files/OctIQYoIZqnVI6IUdQrj" alt=""><figcaption></figcaption></figure> <figure><img src="/files/VVJtsavq0P0Y2L2dad3G" alt=""><figcaption></figcaption></figure></div>

**Step 3:** If you left **Request VAT Invoice** ticked, clicking **Pay** opens the **Invoice Details** window. Choose whether you're buying as a **Company** or an **Individual**, then fill in the required information.

<figure><img src="/files/DEVUBzuLnFjbQRN1Wcou" alt=""><figcaption></figcaption></figure>

**Tip:** Only complete this step if you need an invoice issued. If you leave the invoice option unticked, you're redirected straight to the payment page.

**Step 4:** Proceed with payment through your chosen provider to complete the top-up.

<figure><img src="/files/fvit495kLg3SPZHAar1m" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/CAQW4zQlENRfYCq3y4FA" alt=""><figcaption></figcaption></figure>

Your new balance is reflected on the **Credits & Billing** page once payment clears.

***

## What's Next

* Ready to build? Create an [How to get API Key](/guide/get-started/avis-api-key.md) to start spending your credits.
* Invite friends and earn — see [How to Earn Rewards with Avis Referrals](/guide/get-started/avis-ref.md).

***

## FAQ

### What payment methods does Avis accept?

You can top up using **MoMo** or **VNPAY**.

### Is VAT included in the price?

Yes. A 10% VAT is deducted directly into your purchase total, so the amount you pay already includes it.

### How do I get an invoice?

During top-up, enter your invoice details and choose **Company** or **Individual**. If you don't need an invoice, leave the option unticked and you'll go straight to payment. Past invoices are available in your invoice history on the **Credits & Billing** page.

### Where can I check my current balance?

Your total balance is shown at the top of the [Credits & Billing](https://www.avis.xyz/profile/credits) page, alongside your invoice history.


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# Agent Instructions
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