# Batch upsert Withholding Tax rate rows, applying the write-time gates before any row lands.

`BatchUpsertWithholdingTaxRates`

`POST /api/withholdingtax/rates/{scope}/{code}/$batchUpsert`

- [OpenAPI fragment](https://www.lusid.com/docs/api/lusid/endpoints/withholding-tax/BatchUpsertWithholdingTaxRates.json)
- [Rendered page](https://www.lusid.com/docs/api/lusid/endpoints/withholding-tax/BatchUpsertWithholdingTaxRates)

Row identity is the series identifiers plus effectiveAt; a rate is superseded by loading a row with a
later effectiveAt for the same series identifiers. One batch carries one rule source, so a feed mixing rows
from a source with rows that apply at every source is loaded in two calls.

## Referenced schemas

- [UpsertWithholdingTaxRateRequest](https://www.lusid.com/docs/api/lusid/schemas/UpsertWithholdingTaxRateRequest.txt)
- [BatchUpsertWithholdingTaxRatesResponse](https://www.lusid.com/docs/api/lusid/schemas/BatchUpsertWithholdingTaxRatesResponse.txt)

[< Withholding Tax](https://www.lusid.com/docs/api/lusid/endpoints/withholding-tax/llms.txt)