# Income derivation

Indicates the source and methodology used to derive a household's income estimate (e.g., observed records, modeled, geographic average).

- API name: `income_derivation`
- Category: Financial
- Type · unit: Text
- Individuals with a value: 257.6M (100.0%)
- Latest collection: Jun 1, 2026, refreshed every two months
- How values combine: Read from a single source field.

## Links

- [Catalog page](/catalog/v2/income_derivation)
- [Published statistics (JSON)](https://static.faraday.ai/figv2/income_derivation.json)
- [API reference](/docs/reference/getattribute)