# TaxRegistration

object type

A tax registration — the org's NEXUS declaration for ONE jurisdiction: tax computes ONLY where the org holds an ACTIVE registration (the calc gate). The OPERATIONAL semantics: active = the org collects there · inactive = a lapsed/suspended registration (resumable) · doomed = deregistered. ONE live registration per (org × jurisdiction) — the pair marker; the PAIR is IMMUTABLE at birth (re-register = create + doom). jurisdictionId refs the SHARED canonical tree. Physical-nexus seeding from PFLs and economic-nexus tracking are spec-deferred.

## Fields

| Field | Type | Notes |
| --- | --- | --- |
| `id` | [ID](/types/#scalars) `ID!` | The record’s id — a UUID the platform assigned when the record was created; every reference to this record uses it. |
| `sysId` | [String](/types/#scalars) `String!` | The group-scoped human-facing system id (TN-…). |
| `type` | [String](/types/#scalars) `String!` | The kind of record — always `TaxRegistration` here. |
| `caption` | [String](/types/#scalars) `String!` | The record’s display name — what people see it called. |
| `status` | [String](/types/#scalars) `String!` | The FSM state: active \| inactive \| doomed. |
| `parentId` | [ID](/types/#scalars) `ID!` | The registering Organization; for a TaxRegistration parentId!== rootId. |
| `rootId` | [ID](/types/#scalars) `ID!` | The org-group family root. |
| `createdAt` | [String](/types/#scalars) `String!` | When the record was created, as a UTC timestamp. |
| `updatedAt` | [String](/types/#scalars) `String!` | When the record last changed, as a UTC timestamp. |
| `revisionNum` | [Int](/types/#scalars) `Int!` | How many times this record has been edited; the first save is 0. |
| `revision` | [ID](/types/#scalars) `ID!` | The OCC revision token — supply it on every mutation of this record; rotates on every write. |
| `refCaptions` | [RefCaption](/types/RefCaption/) `[RefCaption!]!` | The server-composed captions of this record's declared references (the referenced-caption rule) — one row per referenced id; see RefCaption. |
| `jurisdictionId` | [ID](/types/#scalars) `ID!` | The registered TaxJurisdiction. IMMUTABLE at birth (the pair is the identity + its uniqueness marker). |
| `registrationNumber` | [String](/types/#scalars) | Optional permit/registration number issued by the jurisdiction. Editable (corrections are real). |
| `code` | [String](/types/#scalars) | Optional mutable merchant reference code; uniqueness NOT enforced. |

## Used by

- [createTaxRegistration](/reference/tax-registration/createTaxRegistration/)
- [deactivateTaxRegistration](/reference/tax-registration/deactivateTaxRegistration/)
- [doomTaxRegistration](/reference/tax-registration/doomTaxRegistration/)
- [reactivateTaxRegistration](/reference/tax-registration/reactivateTaxRegistration/)
- [taxRegistration](/reference/tax-registration/taxRegistration/)
- [updateTaxRegistration](/reference/tax-registration/updateTaxRegistration/)