> ## Documentation Index
> Fetch the complete documentation index at: https://www.helius.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# getMinimumBalanceForRentExemption

> Returns minimum balance required to make account rent exempt.

## Request Parameters

<ParamField body="address" type="number" required>
  Size of account data in bytes that you need to store on the Solana blockchain.
</ParamField>

<ParamField body="commitment" type="string">
  The commitment level for the request.

  * `confirmed`
  * `finalized`
  * `processed`
</ParamField>


## OpenAPI

````yaml openapi/rpc-http/getMinimumBalanceForRentExemption.yaml POST /
openapi: 3.1.0
info:
  title: Solana RPC API
  version: 1.0.0
  description: >-
    Account storage cost calculator API for determining the minimum SOL balance
    required to make Solana accounts rent-exempt based on their data size
    requirements.
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
servers:
  - url: https://mainnet.helius-rpc.com
    description: Mainnet RPC endpoint
  - url: https://devnet.helius-rpc.com
    description: Devnet RPC endpoint
security: []
paths:
  /:
    post:
      tags:
        - RPC
      summary: getMinimumBalanceForRentExemption
      description: >
        Calculate the minimum SOL balance required to make a Solana account
        permanently rent-exempt.

        This essential economic API helps determine the precise amount of SOL
        that must be allocated

        to an account based on its data size to avoid paying recurring rent
        fees. Accounts that

        maintain this minimum balance are exempt from the network's storage rent
        charges, ensuring

        their long-term persistence on the blockchain. Critical for wallet
        developers, DApp builders,

        and any application creating on-chain accounts to accurately estimate
        account creation costs

        and properly fund new accounts based on their intended storage
        requirements.
      operationId: getMinimumBalanceForRentExemption
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - jsonrpc
                - id
                - method
              properties:
                jsonrpc:
                  type: string
                  description: The JSON-RPC protocol version.
                  enum:
                    - '2.0'
                  example: '2.0'
                  default: '2.0'
                id:
                  type: string
                  description: A unique identifier for the request.
                  example: '1'
                  default: '1'
                method:
                  type: string
                  description: The name of the RPC method to invoke.
                  enum:
                    - getMinimumBalanceForRentExemption
                  example: getMinimumBalanceForRentExemption
                  default: getMinimumBalanceForRentExemption
                params:
                  type: array
                  description: Parameters for the method.
                  default:
                    - 50
                  items:
                    oneOf:
                      - type: integer
                        description: >-
                          Size of account data in bytes that you need to store
                          on the Solana blockchain.
                        example: 50
                      - type: object
                        description: Configuration object with additional options.
                        properties:
                          commitment:
                            type: string
                            description: The commitment level for the request.
                            enum:
                              - confirmed
                              - finalized
                              - processed
                            example: finalized
      responses:
        '200':
          description: Successfully retrieved the minimum balance for rent exemption.
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                    description: The JSON-RPC protocol version.
                    enum:
                      - '2.0'
                    example: '2.0'
                  id:
                    type: string
                    description: Identifier matching the request.
                    example: '1'
                  result:
                    type: integer
                    description: >-
                      Minimum SOL balance in lamports required to make an
                      account with this data size permanently rent-exempt.
                    example: 500
        '400':
          description: Bad Request - Invalid request parameters or malformed request.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                jsonrpc: '2.0'
                error:
                  code: -32602
                  message: Invalid params
                id: '1'
        '401':
          description: Unauthorized - Invalid or missing API key.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                jsonrpc: '2.0'
                error:
                  code: -32001
                  message: Unauthorized
                id: '1'
        '429':
          description: Too Many Requests - Rate limit exceeded.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                jsonrpc: '2.0'
                error:
                  code: -32005
                  message: Too many requests
                id: '1'
        '500':
          description: Internal Server Error - An error occurred on the server.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                jsonrpc: '2.0'
                error:
                  code: -32603
                  message: Internal error
                id: '1'
        '503':
          description: Service Unavailable - The service is temporarily unavailable.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                jsonrpc: '2.0'
                error:
                  code: -32002
                  message: Service unavailable
                id: '1'
        '504':
          description: Gateway Timeout - The request timed out.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                jsonrpc: '2.0'
                error:
                  code: -32003
                  message: Gateway timeout
                id: '1'
      security:
        - ApiKeyQuery: []
components:
  schemas:
    ErrorResponse:
      type: object
      properties:
        jsonrpc:
          type: string
          description: The JSON-RPC protocol version.
          enum:
            - '2.0'
          example: '2.0'
        error:
          type: object
          properties:
            code:
              type: integer
              description: The error code.
              example: -32602
            message:
              type: string
              description: The error message.
            data:
              type: object
              description: Additional data about the error.
        id:
          type: string
          description: Identifier matching the request.
          example: '1'
  securitySchemes:
    ApiKeyQuery:
      type: apiKey
      in: query
      name: api-key
      description: >-
        Your Helius API key. You can get one for free in the
        [dashboard](https://dashboard.helius.dev/api-keys).

````