# Overpayment and Underpayment

### **Overpayments**

If the payer sends more than the amount specified in the invoice:

* goodPayments processes the payment in full.
* The entire received amount is forwarded to the merchant’s forwarding address.
* The invoice is marked as **«Overpaid».**
* Any refunds or compensation for the overpaid amount must be handled **directly between the merchant and the payer** – goodPayments does not participate in this process.

The service does not split or return any overpaid funds. The full amount received is always sent to the merchant.

### **Underpayments**

If the payer sends less than the amount specified in the invoice:

* goodPayments processes the received amount immediately upon the first incoming transaction;
* The received funds are forwarded to the merchant's forwarding address in full;
* The invoice is marked as **«Underpaid»**.

Any compensation for the shortfall must be handled **directly between the merchant and the payer** – goodPayments does not participate in this process.

{% hint style="info" %}
This rule applies to temporary addresses only. For static addresses, no amount is specified in the invoice.
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://goodpayments.gitbook.io/docs/user-guide/overpayment-and-underpayment.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.