> For the complete documentation index, see [llms.txt](https://dev.ropo.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.ropo.com/guides/basics/invoice/cash-discount.md).

# Cash discount

Cash discount speeds up payments. You offer a discount if the debtor pays before a given date.

### How it works

Add `cashdiscountrow` under the invoice `dataset`. It is an array, even if you only send one discount.

#### Fields

* `discountdate` (YYYY-MM-DD)
* `discountpercent` (0–100)
* `discountamount` (EUR)
* `discountfreetext` (optional)

### Example

```json
{
  "datastream": {
    "dataset": [
      {
        "jobtype": "0",
        "customertype": "1",
        "company": "Example Company",
        "address": "Example street 1",
        "postcode": "00100",
        "city": "Helsinki",
        "billdate": "2026-02-06",
        "paydate": "2026-02-20",
        "payrow": [
          { "desc": "Subscription", "count": "1", "amount": "1415.00", "taxpr": "24" }
        ],
        "cashdiscountrow": [
          {
            "discountdate": "2026-02-16",
            "discountpercent": "2",
            "discountamount": "28.30",
            "discountfreetext": "10 days -2%"
          }
        ]
      }
    ]
  }
}
```

{% hint style="info" %}
If you omit `discountfreetext`, the service can generate the text automatically.
{% endhint %}

{% hint style="warning" %}
The service validates `discountpercent` and `discountamount` against the invoice totals. Keep rounding consistent in your own calculations.
{% endhint %}


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