# Correct an invoice and credit notes

> How to correct an invoice with wrong details, and when Tentary creates a credit note automatically.

Source: https://tentary.com/en/help/correct-invoice/
Last updated: 2026-10-13

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An invoice shows a wrong address or company name? With an invoice correction, Tentary creates a credit note and a new, corrected invoice.

## When to correct an invoice

An invoice that has already been sent must not simply be overwritten. Instead, it is cancelled and replaced by a new one. That is exactly what an invoice correction does: Tentary creates a **credit note** for the previous invoice and a new, **corrected invoice** with the right details.

Typical reasons are a typo in the address, a missing company name or a missing VAT ID of your customer.

You can correct an invoice on orders that are paid, already have an invoice and have not been refunded. Subscriptions cannot be corrected.

## How to correct an invoice

1. Open the order under [**Sales**](https://app.tentary.com/orders).
2. Under **Invoice correction**, click **Manual invoice correction**.
3. In the window, correct the details of the **Buyer**, for example name, company, address or **VAT ID**. If needed, you can also adjust the details of the **Seller**.
4. Under **Reason for correction (visible on invoice)**, enter why you are correcting the invoice.
5. Leave **Send to buyer** switched on if your customer should receive the credit note and the corrected invoice by email.
6. Click **Create correction**.

Afterwards, both documents are in the order under **Credit notes & corrections**, each as a PDF. They also appear in your accounting under [**Your invoices to customers**](https://app.tentary.com/settings/revenues/customerinvoices).

### Changing tax and amounts

Under **Tax & amounts**, **Edit tax-relevant fields** also lets you change the type of purchase, **Business purchase (B2B)** or **Private purchase (B2C)**, as well as the tax rate and the amounts. Tentary then recalculates the amounts on the invoice. With **Tax note (visible on invoice)** you can add a VAT note if needed.

> **Important:** You are responsible for the correctness of the tax details. Your monthly [revenue reports](https://tentary.com/en/help/find-invoices-and-sales/) do not take over such a change, they keep showing the original amounts.

### For installment payments

For an [installment payment](https://tentary.com/en/help/installment-payment/), the credit note reverses the full original invoice. The corrected invoice shows the amount your customer has paid so far.

## Credit notes for refunds

When you refund an order that has an invoice, Tentary automatically creates a credit note. It is sent to your customer together with the refund confirmation. To learn more about refunds, see [refunds and chargebacks](https://tentary.com/en/help/refunds-and-chargebacks/).

If a refunded order has no credit note, for example an older order, you can create it in the order afterwards with **Generate credit note**.

> **Note:** If you chose **Do not create invoices** under [invoicing](https://tentary.com/en/help/invoicing-for-sales/), Tentary does not create credit notes either.