# Create a tax rule set. `CreateTaxRuleSet` `POST /api/tax/rulesets` - [OpenAPI fragment](https://www.lusid.com/docs/api/lusid/endpoints/tax-rule-sets/CreateTaxRuleSet.json) - [Rendered page](https://www.lusid.com/docs/api/lusid/endpoints/tax-rule-sets/CreateTaxRuleSet) Creates a tax rule set definition at the given effective time. The user must be entitled to read any properties specified in each rule. ## Referenced schemas - [CreateTaxRuleSetRequest](https://www.lusid.com/docs/api/lusid/schemas/CreateTaxRuleSetRequest.txt) - [TaxRuleSet](https://www.lusid.com/docs/api/lusid/schemas/TaxRuleSet.txt) [< Tax Rule Sets](https://www.lusid.com/docs/api/lusid/endpoints/tax-rule-sets/llms.txt)