> ## Documentation Index > Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt > Use this file to discover all available pages before exploring further. # Preview jurisdiction tax amounts > Computes disbursement IOF tax amounts using the active compiled jurisdiction profile without persisting data. ## OpenAPI ````yaml en/openapi/v3-current/lender.yaml post /api/v1/br/tax/preview openapi: 3.1.0 info: contact: email: contact@lerian.studio name: Lerian Studio url: https://lerian.studio description: Code-first OpenAPI 3.1 surface for the Lender service. license: name: Lerian Studio General License title: Lender API version: 1.0.0 servers: - url: https://lender.sandbox.lerian.net security: - BearerAuth: [] tags: - description: >- Ledger accounting operations: journal entries and accrual postings for loan accounts. name: Accounting - description: >- Loan application intake and lifecycle: submission, decisioning, and status. name: LoanApplications - description: >- Loan product catalog: definition, versioning, and activation of lending products. name: LoanProducts - description: >- Loan account servicing operations: balances, schedules, and account-level actions. name: Loan Accounts - description: >- Servicing read operations: repayment schedules and servicing state for loan accounts. name: Servicings - description: >- Portfolio dashboard read operations: aggregated portfolio and performance views. name: Dashboard - description: >- Jurisdiction registry: supported jurisdiction profiles and their capabilities. name: Jurisdictions - description: >- Jurisdiction-specific loan application operations (Brazil origination surface). name: Loan Applications - description: >- Tax computation operations for jurisdiction-specific lending (e.g. Brazil IOF). name: Tax - description: >- Brazil consignado privado operations: contract origination (contratação ativa) and lifecycle. name: Consignado paths: /api/v1/br/tax/preview: post: tags: - Tax summary: Preview jurisdiction tax amounts description: >- Computes disbursement IOF tax amounts using the active compiled jurisdiction profile without persisting data. operationId: previewTax requestBody: content: application/json: schema: $ref: '#/components/schemas/TaxPreviewHumaBody' required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/TaxPreviewEnvelopeResponse' description: OK default: content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Error components: schemas: TaxPreviewHumaBody: additionalProperties: false properties: disbursementDate: description: Disbursement date (RFC3339). examples: - '2026-06-14T12:00:00Z' format: date-time type: string finalDueDate: description: Final due date (RFC3339). examples: - '2026-06-14T12:00:00Z' format: date-time type: string grossAmount: description: >- Gross disbursement amount in major currency units (e.g. "100000.00"). examples: - '100000.00' type: string jurisdictionCode: description: ISO 3166-1 alpha-2 jurisdiction code (e.g. "BR"). examples: - BR maxLength: 2 minLength: 2 type: string netDeliveredAmount: description: Optional net delivered amount in major currency units. examples: - '99913.16' type: string taxRegime: description: Tax regime selector understood by the jurisdiction tax engine. type: string required: - grossAmount - disbursementDate - finalDueDate - taxRegime - jurisdictionCode type: object TaxPreviewEnvelopeResponse: additionalProperties: false properties: data: $ref: '#/components/schemas/TaxPreviewResponse' description: >- The computed tax-preview result (IOF, PIS, COFINS, and net delivered amount) for the requested disbursement. required: - data type: object Detail: additionalProperties: false properties: code: description: >- Stable, machine-readable domain error code scoped to the emitting service (format: -NNNN). examples: - ERR-0001 type: string detail: description: >- A human-readable explanation specific to this occurrence of the problem. examples: - Property foo is required but is missing. type: string errors: description: Optional list of individual error details items: $ref: '#/components/schemas/ErrorDetail' type: - array - 'null' instance: description: >- A URI reference that identifies the specific occurrence of the problem. examples: - https://example.com/error-log/abc123 format: uri type: string status: description: HTTP status code examples: - 400 format: int64 type: integer title: description: >- A short, human-readable summary of the problem type. This value should not change between occurrences of the error. examples: - Bad Request type: string type: default: about:blank description: A URI reference to human-readable documentation for the error. examples: - https://example.com/errors/example format: uri type: string type: object TaxPreviewResponse: additionalProperties: false properties: cofins: description: >- COFINS contribution amount, decimal string in major currency units (scale 2). examples: - '30.00' type: string grossAmount: description: >- Gross disbursement amount before tax, decimal string in major currency units (scale 2). examples: - '100000.00' type: string iofAdditional: description: >- Additional fixed-rate IOF component, decimal string in major currency units (scale 2). examples: - '38.00' type: string iofDaily: description: >- Daily IOF component, decimal string in major currency units (scale 2). examples: - '12.34' type: string jurisdictionCode: description: ISO 3166-1 alpha-2 jurisdiction code (e.g. "BR"). examples: - BR type: string netDeliveredAmount: description: >- Net amount delivered to the borrower after tax deduction, decimal string in major currency units (scale 2). examples: - '99913.16' type: string pis: description: >- PIS contribution amount, decimal string in major currency units (scale 2). examples: - '6.50' type: string profileVersion: description: >- Compiled jurisdiction profile version used to compute the preview (e.g. "1.0.0"). examples: - 1.0.0 type: string rateTableSnapshotId: description: >- Identifier of the rate-table snapshot whose rates produced these amounts. examples: - 550e8400-e29b-41d4-a716-446655440002 type: string taxRegime: description: Tax regime selector applied by the jurisdiction tax engine. type: string totalIof: description: >- Sum of daily and additional IOF, decimal string in major currency units (scale 2). examples: - '50.34' type: string totalTax: description: >- Total tax (IOF + PIS + COFINS), decimal string in major currency units (scale 2). examples: - '86.84' type: string required: - iofDaily - iofAdditional - totalIof - pis - cofins - totalTax - grossAmount - netDeliveredAmount - taxRegime - jurisdictionCode - profileVersion - rateTableSnapshotId type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object securitySchemes: BearerAuth: bearerFormat: JWT description: JWT bearer token issued by the identity provider. scheme: bearer type: http ````