> ## Documentation Index > Fetch the complete documentation index at: https://docs.kalshi.com/llms.txt > Use this file to discover all available pages before exploring further. # Intra Account Transfer > Transfers funds within the same account. When `source_exchange_shard` and `destination_exchange_shard` are the same, Kalshi treats the request as a subaccount transfer. The returned transfer ID appears in the subaccount transfer history. Cross-exchange-index subaccount transfers run in up to three non-atomic steps. If a later step fails, completed steps are not undone, so funds may remain in the primary account on the source or destination exchange index. ## OpenAPI ````yaml /openapi.yaml post /portfolio/intra_exchange_instance_transfer openapi: 3.0.0 info: title: Kalshi Trade API Manual Endpoints version: 3.34.0 description: >- Manually defined OpenAPI spec for endpoints being migrated to spec-first approach servers: - url: https://external-api.kalshi.com/trade-api/v2 description: Production Trade API server - url: https://api.elections.kalshi.com/trade-api/v2 description: Production shared API server, also supported - url: https://external-api.demo.kalshi.co/trade-api/v2 description: Demo Trade API server - url: https://demo-api.kalshi.co/trade-api/v2 description: Demo shared API server, also supported security: [] tags: - name: api-keys description: API key management endpoints - name: orders description: Order management endpoints - name: order-groups description: Order group management endpoints - name: portfolio description: Portfolio and balance information endpoints - name: communications description: Request-for-quote (RFQ) endpoints - name: multivariate description: Multivariate event collection endpoints - name: exchange description: Exchange status and information endpoints - name: live-data description: Live data endpoints - name: markets description: Market data endpoints - name: milestone description: Milestone endpoints - name: search description: Search and filtering endpoints - name: incentive-programs description: Incentive program endpoints - name: fcm description: FCM member specific endpoints - name: events description: Event endpoints - name: structured-targets description: Structured targets endpoints paths: /portfolio/intra_exchange_instance_transfer: post: tags: - portfolio summary: Intra Account Transfer description: > Transfers funds within the same account. When `source_exchange_shard` and `destination_exchange_shard` are the same, Kalshi treats the request as a subaccount transfer. The returned transfer ID appears in the subaccount transfer history. Cross-exchange-index subaccount transfers run in up to three non-atomic steps. If a later step fails, completed steps are not undone, so funds may remain in the primary account on the source or destination exchange index. operationId: IntraExchangeInstanceTransfer requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/IntraExchangeInstanceTransferRequest' responses: '200': description: Transfer request accepted. The transfer is processed asynchronously. content: application/json: schema: $ref: '#/components/schemas/IntraExchangeInstanceTransferResponse' '400': $ref: '#/components/responses/BadRequestError' '401': $ref: '#/components/responses/UnauthorizedError' '403': $ref: '#/components/responses/ForbiddenError' '409': $ref: '#/components/responses/ConflictError' '500': $ref: '#/components/responses/InternalServerError' security: - kalshiAccessKey: [] kalshiAccessSignature: [] kalshiAccessTimestamp: [] components: schemas: IntraExchangeInstanceTransferRequest: type: object required: - source - destination - amount properties: client_transfer_id: type: string format: uuid description: > Client ID for duplicate prevention. Reuse only to retry the same request: if a transfer from the same source exchange instance and shard was already accepted with this ID, the request returns 409 and creates no new transfer. The returned transfer_id is always generated by Kalshi. Only supported for primary accounts. Transfers involving numbered subaccounts reject this field. If omitted, each request creates a new transfer. source: $ref: '#/components/schemas/ExchangeInstance' description: The source exchange instance destination: $ref: '#/components/schemas/ExchangeInstance' description: The destination exchange instance amount: type: integer format: int64 description: The amount to transfer in centicents source_exchange_shard: type: integer minimum: 0 maximum: 100 default: 0 x-go-type-skip-optional-pointer: true description: Source exchange shard index (default 0) x-oapi-codegen-extra-tags: validate: gte=0,lte=100 destination_exchange_shard: type: integer minimum: 0 maximum: 100 default: 0 x-go-type-skip-optional-pointer: true description: Destination exchange shard index (default 0) x-oapi-codegen-extra-tags: validate: gte=0,lte=100 source_subaccount: type: integer default: 0 x-go-type-skip-optional-pointer: true description: >- Source subaccount number (default 0 for the primary account). Only supported for event contract to event contract transfers. x-oapi-codegen-extra-tags: validate: gte=0 destination_subaccount: type: integer default: 0 x-go-type-skip-optional-pointer: true description: >- Destination subaccount number (default 0 for the primary account). Only supported for event contract to event contract transfers. x-oapi-codegen-extra-tags: validate: gte=0 IntraExchangeInstanceTransferResponse: type: object required: - transfer_id properties: transfer_id: type: string description: The ID of the transfer that was created ExchangeInstance: type: string enum: - event_contract - margined description: The exchange instance type ErrorResponse: type: object properties: code: type: string description: Error code message: type: string description: Human-readable error message details: type: string description: Additional details about the error, if available responses: BadRequestError: description: Bad request - invalid input content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' UnauthorizedError: description: Unauthorized - authentication required content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' ForbiddenError: description: Forbidden - insufficient permissions content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' ConflictError: description: Conflict - resource already exists or cannot be modified content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' InternalServerError: description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' securitySchemes: kalshiAccessKey: type: apiKey in: header name: KALSHI-ACCESS-KEY description: Your API key ID kalshiAccessSignature: type: apiKey in: header name: KALSHI-ACCESS-SIGNATURE description: >- Base64 signature of the pre-sign text (timestamp + method + path) made with the API key's algorithm - RSA-PSS with SHA-256 for RSA keys, Ed25519 for Ed25519 keys kalshiAccessTimestamp: type: apiKey in: header name: KALSHI-ACCESS-TIMESTAMP description: Request timestamp in milliseconds ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.