> ## Documentation Index
> Fetch the complete documentation index at: https://gobl-cli-install-gobl-dev.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# KeyDef

KeyDef defines a key that can be used inside a tax category.

## Schema ID

`https://gobl.org/draft-0/tax/regime-def#/$defs/KeyDef`

## Properties

| Title | Property | Type | Description |
| - | - | - | - |
| Key | `key` | [cbc.Key](/draft-0/cbc/key) | Key identifies this rate within the system |
| Name | `name` | [i18n.String](/draft-0/i18n/string) | Human name of the rate set |
| Description | `desc` | [i18n.String](/draft-0/i18n/string) | Useful description of the rate. |
| No Percent | `no_percent` | boolean | NoPercent when true implies that the rate when used in a tax Combo should not define a percent value. |


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