> ## Documentation Index > Fetch the complete documentation index at: https://docs.iotools.cloud/llms.txt > Use this file to discover all available pages before exploring further. # Dividend Reinvestment (DRIP) Calculator > Simulate a Dividend Reinvestment Plan (DRIP) period by period — enter an initial investment, dividend yield, dividend growth rate, and share price growth to see a year-by-year share count, dividend income, and portfolio value, plus a DRIP-on vs. cash-dividend comparison. [Try Dividend Reinvestment (DRIP) Calculator in your browser →](https://iotools.cloud/tool/dividend-reinvestment-calculator/) ## OpenAPI ````yaml https://api.iotools.cloud/v1/openapi post /v1/tool/dividend-reinvestment-calculator openapi: 3.1.0 info: title: iotools.cloud API version: 1.0.0 description: >- Run any iotools.cloud tool over HTTP. Authenticate with `Authorization: Bearer iot_live_…`. **Only `POST /v1/tool/{slug}` costs credits.** Every GET here — the catalog, a tool's schema, your balance — is free. A tool call is charged its own weight or your plan's per-call minimum, whichever is larger; `x-iotools-credit-cost` on each operation is quoted at the free-tier minimum, and `GET /v1/tools/list` returns the exact figure for your key. `GET /v1/me/credits` reports what you have left, and `GET /v1/me/usage` reports what it went on. Failures are RFC 9457 problem documents — branch on `code`. servers: - url: https://api.iotools.cloud description: Production security: - bearerAuth: [] tags: - name: Catalog description: Find a tool and read its contract. Free. - name: Converters description: >- Convert between formats, encodings, and units — Base64, CSV and JSON, timestamps, and more. Fast, free, and processed right in your browser. - name: Formatters description: >- Format, beautify, minify, and validate code and data — JSON, HTML, CSS, SQL, and regex. Clean up messy input in one click, with nothing to upload. - name: Generators description: >- Generate exactly what you need and on demand — passwords, UUIDs, QR codes, hashes, random numbers, and more. Secure, instant, and free. - name: Calculators description: >- Crunch the numbers fast — from everyday math to specialized conversions and unit work. Free online calculators that run entirely in your browser. - name: Editors description: >- Edit and transform text, code, and images with quick, focused editors that run entirely in your browser — nothing to install, and no sign-up needed. - name: Utilities description: >- Everyday developer and web utilities — DNS and IP lookups, redirect and certificate checkers, and other quick diagnostics. Free and privacy-friendly. - name: Account description: Your key's allowance, limits and usage history. paths: /v1/tool/dividend-reinvestment-calculator: post: tags: - Calculators summary: Dividend Reinvestment (DRIP) Calculator description: >- Simulate a Dividend Reinvestment Plan (DRIP) period by period — enter an initial investment, dividend yield, dividend growth rate, and share price growth to see a year-by-year share count, dividend income, and portfolio value, plus a DRIP-on vs. cash-dividend comparison. [Try Dividend Reinvestment (DRIP) Calculator in your browser →](https://iotools.cloud/tool/dividend-reinvestment-calculator/) operationId: run_dividend_reinvestment_calculator requestBody: required: false content: application/json: schema: type: object properties: initialInvestment: type: number description: Initial Investment ($) minimum: 0 sharePrice: type: number description: Starting Share Price ($) minimum: 0.01 dividendYield: type: number description: Dividend Yield (%) minimum: 0 maximum: 100 dividendGrowthRate: type: number description: Annual Dividend Growth Rate (%) sharePriceGrowthRate: type: number description: Annual Share Price Growth Rate (%) years: type: number description: Investment Period (Years) minimum: 1 maximum: 100 dividendFrequency: enum: - '4' - '1' description: Dividend Frequency reinvestDividends: type: boolean description: Reinvest Dividends (DRIP) required: [] examples: 10_000_quarterly_drip_10_years: summary: $10,000 quarterly DRIP, 10 years value: initialInvestment: '10000' sharePrice: '50' dividendYield: '3' dividendGrowthRate: '5' sharePriceGrowthRate: '6' years: '10' dividendFrequency: '4' reinvestDividends: 'true' cash_dividends_no_drip_annual_payout_5_years: summary: Cash dividends (no DRIP), annual payout, 5 years value: initialInvestment: '5000' sharePrice: '25' dividendYield: '4' dividendGrowthRate: '3' sharePriceGrowthRate: '4' years: '5' dividendFrequency: '1' reinvestDividends: '' flat_dividend_and_price_quarterly_3_years: summary: Flat dividend and price, quarterly, 3 years value: initialInvestment: '1000' sharePrice: '10' dividendYield: '5' dividendGrowthRate: '0' sharePriceGrowthRate: '0' years: '3' dividendFrequency: '4' reinvestDividends: 'true' responses: '200': description: Tool output content: application/json: examples: 10_000_quarterly_drip_10_years: summary: $10,000 quarterly DRIP, 10 years value: tool: dividend-reinvestment-calculator tool_version: 1.0.1 outputs: summary: - metric: Starting Shares value: '200.0000' - metric: Ending Share Price value: $89.54 - metric: Final Shares Held value: '263.6680' - metric: Total Dividends Received value: $4,389.36 - metric: Portfolio Value value: $23,609.46 - metric: Total Return value: +136.09% - metric: Yield on Cost value: +4.65% - metric: Portfolio Value (With DRIP) value: $23,609.46 - metric: Portfolio Value (Without DRIP) value: $21,681.84 - metric: DRIP Advantage value: $1,927.62 (+8.89%) schedule: - year: '1' share-price: $53.00 shares-held: '205.8493' dividends-received: $303.31 portfolio-value: $10,910.01 - year: '2' share-price: $56.18 shares-held: '211.8122' dividends-received: $327.76 portfolio-value: $11,899.61 - year: '3' share-price: $59.55 shares-held: '217.8893' dividends-received: $354.08 portfolio-value: $12,975.48 - year: '4' share-price: $63.12 shares-held: '224.0813' dividends-received: $382.41 portfolio-value: $14,144.87 - year: '5' share-price: $66.91 shares-held: '230.3885' dividends-received: $412.90 portfolio-value: $15,415.59 - year: '6' share-price: $70.93 shares-held: '236.8114' dividends-received: $445.70 portfolio-value: $16,796.07 - year: '7' share-price: $75.18 shares-held: '243.3504' dividends-received: $480.99 portfolio-value: $18,295.45 - year: '8' share-price: $79.69 shares-held: '250.0060' dividends-received: $518.93 portfolio-value: $19,923.58 - year: '9' share-price: $84.47 shares-held: '256.7784' dividends-received: $559.72 portfolio-value: $21,691.09 - year: '10' share-price: $89.54 shares-held: '263.6680' dividends-received: $603.57 portfolio-value: $23,609.46 credits_used: 3 credits_remaining: null cash_dividends_no_drip_annual_payout_5_years: summary: Cash dividends (no DRIP), annual payout, 5 years value: tool: dividend-reinvestment-calculator tool_version: 1.0.1 outputs: summary: - metric: Starting Shares value: '200.0000' - metric: Ending Share Price value: $30.42 - metric: Final Shares Held value: '200.0000' - metric: Total Dividends Received value: $1,061.83 - metric: Portfolio Value value: $7,145.09 - metric: Total Return value: +42.90% - metric: Yield on Cost value: +4.50% - metric: Portfolio Value (With DRIP) value: $7,320.76 - metric: Portfolio Value (Without DRIP) value: $7,145.09 - metric: DRIP Advantage value: $175.67 (+2.46%) schedule: - year: '1' share-price: $26.00 shares-held: '200.0000' dividends-received: $200.00 portfolio-value: $5,400.00 - year: '2' share-price: $27.04 shares-held: '200.0000' dividends-received: $206.00 portfolio-value: $5,814.00 - year: '3' share-price: $28.12 shares-held: '200.0000' dividends-received: $212.18 portfolio-value: $6,242.50 - year: '4' share-price: $29.25 shares-held: '200.0000' dividends-received: $218.55 portfolio-value: $6,686.02 - year: '5' share-price: $30.42 shares-held: '200.0000' dividends-received: $225.10 portfolio-value: $7,145.09 credits_used: 3 credits_remaining: null flat_dividend_and_price_quarterly_3_years: summary: Flat dividend and price, quarterly, 3 years value: tool: dividend-reinvestment-calculator tool_version: 1.0.1 outputs: summary: - metric: Starting Shares value: '100.0000' - metric: Ending Share Price value: $10.00 - metric: Final Shares Held value: '116.0755' - metric: Total Dividends Received value: $160.75 - metric: Portfolio Value value: $1,160.75 - metric: Total Return value: +16.08% - metric: Yield on Cost value: +5.00% - metric: Portfolio Value (With DRIP) value: $1,160.75 - metric: Portfolio Value (Without DRIP) value: $1,150.00 - metric: DRIP Advantage value: $10.75 (+0.94%) schedule: - year: '1' share-price: $10.00 shares-held: '105.0945' dividends-received: $50.95 portfolio-value: $1,050.95 - year: '2' share-price: $10.00 shares-held: '110.4486' dividends-received: $53.54 portfolio-value: $1,104.49 - year: '3' share-price: $10.00 shares-held: '116.0755' dividends-received: $56.27 portfolio-value: $1,160.75 credits_used: 3 credits_remaining: null schema: type: object required: - tool - tool_version - outputs - credits_used - credits_remaining properties: outputs: type: object properties: summary: type: array description: Summary items: type: object properties: metric: type: string description: Metric value: type: string description: Value x-iotools-columns: - metric - value schedule: type: array description: Year-by-Year Breakdown items: type: object properties: year: type: string description: Year share-price: type: string description: Share Price shares-held: type: string description: Shares Held dividends-received: type: string description: Dividends Received portfolio-value: type: string description: Portfolio Value x-iotools-columns: - year - share-price - shares-held - dividends-received - portfolio-value tool: type: string description: The tool's slug, echoing the {slug} in the request path. tool_version: type: string description: Output-contract version for this tool. credits_used: type: integer description: >- Credits this call consumed, after any settlement refund. 0 when metering is disabled. credits_remaining: type: - integer - 'null' description: >- Credits left in the current monthly allowance, or null when metering is disabled. request_id: type: string description: Correlation id, also sent as x-request-id. '400': $ref: '#/components/responses/ValidationError' '401': $ref: '#/components/responses/Unauthorized' '402': $ref: '#/components/responses/InsufficientCredits' '403': $ref: '#/components/responses/ToolNotAllowed' '404': $ref: '#/components/responses/ToolNotFound' '413': $ref: '#/components/responses/PayloadTooLarge' '429': $ref: '#/components/responses/RateLimited' '500': $ref: '#/components/responses/ToolFailed' '503': $ref: '#/components/responses/ToolDisabled' security: - bearerAuth: [] components: responses: ValidationError: description: Invalid request. content: application/problem+json: schema: type: object description: >- RFC 9457 problem document, served as application/problem+json. Branch on `code`; `title` is human prose and may be reworded without notice. Some failures add extension members — `fields` on validation errors, `retry_after` on 429s, `credits_used`/`credits_remaining` on billing-adjacent failures — documented on the responses that carry them. required: - type - title - status - code properties: type: type: string format: uri description: Stable documentation URI for this failure. examples: - https://iotools.cloud/docs/errors/validation_error title: type: string description: Short human-readable summary of the failure. examples: - Invalid request status: type: integer description: HTTP status code, matching the response's own status. code: type: string description: >- Stable machine-readable error code — branch on this, not `title`. enum: - validation_error detail: type: string description: Human explanation of this occurrence. request_id: type: string description: Correlation id, also sent as x-request-id. fields: type: - object - string additionalProperties: type: string description: >- What failed: a map of field name → message. Absent when the body itself is malformed; a single string when the failure isn't tied to one field. example: type: https://iotools.cloud/docs/errors/validation_error title: Invalid request status: 400 code: validation_error detail: One or more inputs are invalid — see `fields`. request_id: e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11 fields: inputString: Required Unauthorized: description: Missing or invalid API key. content: application/problem+json: schema: type: object description: >- RFC 9457 problem document, served as application/problem+json. Branch on `code`; `title` is human prose and may be reworded without notice. Some failures add extension members — `fields` on validation errors, `retry_after` on 429s, `credits_used`/`credits_remaining` on billing-adjacent failures — documented on the responses that carry them. required: - type - title - status - code properties: type: type: string format: uri description: Stable documentation URI for this failure. examples: - https://iotools.cloud/docs/errors/invalid_api_key title: type: string description: Short human-readable summary of the failure. examples: - Invalid API key status: type: integer description: HTTP status code, matching the response's own status. code: type: string description: >- Stable machine-readable error code — branch on this, not `title`. enum: - invalid_api_key detail: type: string description: Human explanation of this occurrence. request_id: type: string description: Correlation id, also sent as x-request-id. example: type: https://iotools.cloud/docs/errors/invalid_api_key title: Invalid API key status: 401 code: invalid_api_key detail: 'Provide ''Authorization: Bearer ''.' request_id: e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11 InsufficientCredits: description: Monthly credit allowance exhausted. content: application/problem+json: schema: type: object description: >- RFC 9457 problem document, served as application/problem+json. Branch on `code`; `title` is human prose and may be reworded without notice. Some failures add extension members — `fields` on validation errors, `retry_after` on 429s, `credits_used`/`credits_remaining` on billing-adjacent failures — documented on the responses that carry them. required: - type - title - status - code properties: type: type: string format: uri description: Stable documentation URI for this failure. examples: - https://iotools.cloud/docs/errors/insufficient_credits title: type: string description: Short human-readable summary of the failure. examples: - Insufficient credits status: type: integer description: HTTP status code, matching the response's own status. code: type: string description: >- Stable machine-readable error code — branch on this, not `title`. enum: - insufficient_credits detail: type: string description: Human explanation of this occurrence. request_id: type: string description: Correlation id, also sent as x-request-id. credits_used: type: integer description: Always 0 — a refused call charges nothing. credits_remaining: type: integer description: Credits left in the allowance — fewer than this call costs. example: type: https://iotools.cloud/docs/errors/insufficient_credits title: Insufficient credits status: 402 code: insufficient_credits detail: This call costs 1 credit and 0 remain in this month's allowance. request_id: e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11 credits_used: 0 credits_remaining: 0 ToolNotAllowed: description: Tool exists but has no API surface. content: application/problem+json: schema: type: object description: >- RFC 9457 problem document, served as application/problem+json. Branch on `code`; `title` is human prose and may be reworded without notice. Some failures add extension members — `fields` on validation errors, `retry_after` on 429s, `credits_used`/`credits_remaining` on billing-adjacent failures — documented on the responses that carry them. required: - type - title - status - code properties: type: type: string format: uri description: Stable documentation URI for this failure. examples: - https://iotools.cloud/docs/errors/tool_not_allowed title: type: string description: Short human-readable summary of the failure. examples: - Tool not available over the API status: type: integer description: HTTP status code, matching the response's own status. code: type: string description: >- Stable machine-readable error code — branch on this, not `title`. enum: - tool_not_allowed detail: type: string description: Human explanation of this occurrence. request_id: type: string description: Correlation id, also sent as x-request-id. example: type: https://iotools.cloud/docs/errors/tool_not_allowed title: Tool not available over the API status: 403 code: tool_not_allowed detail: >- "Background Remover" is available on iotools.cloud but has no API endpoint. request_id: e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11 ToolNotFound: description: No such tool. content: application/problem+json: schema: type: object description: >- RFC 9457 problem document, served as application/problem+json. Branch on `code`; `title` is human prose and may be reworded without notice. Some failures add extension members — `fields` on validation errors, `retry_after` on 429s, `credits_used`/`credits_remaining` on billing-adjacent failures — documented on the responses that carry them. required: - type - title - status - code properties: type: type: string format: uri description: Stable documentation URI for this failure. examples: - https://iotools.cloud/docs/errors/tool_not_found title: type: string description: Short human-readable summary of the failure. examples: - Tool not found status: type: integer description: HTTP status code, matching the response's own status. code: type: string description: >- Stable machine-readable error code — branch on this, not `title`. enum: - tool_not_found detail: type: string description: Human explanation of this occurrence. request_id: type: string description: Correlation id, also sent as x-request-id. example: type: https://iotools.cloud/docs/errors/tool_not_found title: Tool not found status: 404 code: tool_not_found detail: No tool with that slug. See GET /v1/tools/list. request_id: e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11 PayloadTooLarge: description: Body too large. content: application/problem+json: schema: type: object description: >- RFC 9457 problem document, served as application/problem+json. Branch on `code`; `title` is human prose and may be reworded without notice. Some failures add extension members — `fields` on validation errors, `retry_after` on 429s, `credits_used`/`credits_remaining` on billing-adjacent failures — documented on the responses that carry them. required: - type - title - status - code properties: type: type: string format: uri description: Stable documentation URI for this failure. examples: - https://iotools.cloud/docs/errors/payload_too_large title: type: string description: Short human-readable summary of the failure. examples: - Payload too large status: type: integer description: HTTP status code, matching the response's own status. code: type: string description: >- Stable machine-readable error code — branch on this, not `title`. enum: - payload_too_large detail: type: string description: Human explanation of this occurrence. request_id: type: string description: Correlation id, also sent as x-request-id. example: type: https://iotools.cloud/docs/errors/payload_too_large title: Payload too large status: 413 code: payload_too_large detail: Request body exceeds this tool's size limit. request_id: e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11 RateLimited: description: Per-minute rate limit exceeded. headers: Retry-After: description: Seconds to wait before retrying (RFC 9110 delta-seconds). schema: type: integer content: application/problem+json: schema: type: object description: >- RFC 9457 problem document, served as application/problem+json. Branch on `code`; `title` is human prose and may be reworded without notice. Some failures add extension members — `fields` on validation errors, `retry_after` on 429s, `credits_used`/`credits_remaining` on billing-adjacent failures — documented on the responses that carry them. required: - type - title - status - code properties: type: type: string format: uri description: Stable documentation URI for this failure. examples: - https://iotools.cloud/docs/errors/rate_limited title: type: string description: Short human-readable summary of the failure. examples: - Rate limit exceeded status: type: integer description: HTTP status code, matching the response's own status. code: type: string description: >- Stable machine-readable error code — branch on this, not `title`. enum: - rate_limited detail: type: string description: Human explanation of this occurrence. request_id: type: string description: Correlation id, also sent as x-request-id. retry_after: type: integer description: >- Seconds until the window resets — the same value as the `Retry-After` header. example: type: https://iotools.cloud/docs/errors/rate_limited title: Rate limit exceeded status: 429 code: rate_limited detail: Too many requests. Retry in 30s. request_id: e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11 retry_after: 30 ToolFailed: description: Tool failed to run. content: application/problem+json: schema: type: object description: >- RFC 9457 problem document, served as application/problem+json. Branch on `code`; `title` is human prose and may be reworded without notice. Some failures add extension members — `fields` on validation errors, `retry_after` on 429s, `credits_used`/`credits_remaining` on billing-adjacent failures — documented on the responses that carry them. required: - type - title - status - code properties: type: type: string format: uri description: Stable documentation URI for this failure. examples: - https://iotools.cloud/docs/errors/processing_error - https://iotools.cloud/docs/errors/internal_error title: type: string description: Short human-readable summary of the failure. examples: - Tool failed to run - Internal error status: type: integer description: HTTP status code, matching the response's own status. code: type: string description: >- Stable machine-readable error code — branch on this, not `title`. enum: - processing_error - internal_error detail: type: string description: Human explanation of this occurrence. request_id: type: string description: Correlation id, also sent as x-request-id. credits_used: type: integer description: >- Always 0 on `processing_error` — a failed run is refunded, floor included. credits_remaining: type: integer description: >- Credits left after the refund. Absent when metering is disabled. example: type: https://iotools.cloud/docs/errors/processing_error title: Tool failed to run status: 500 code: processing_error detail: The tool failed to run. Please try again. request_id: e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11 credits_used: 0 ToolDisabled: description: Tool temporarily disabled. content: application/problem+json: schema: type: object description: >- RFC 9457 problem document, served as application/problem+json. Branch on `code`; `title` is human prose and may be reworded without notice. Some failures add extension members — `fields` on validation errors, `retry_after` on 429s, `credits_used`/`credits_remaining` on billing-adjacent failures — documented on the responses that carry them. required: - type - title - status - code properties: type: type: string format: uri description: Stable documentation URI for this failure. examples: - https://iotools.cloud/docs/errors/tool_disabled - https://iotools.cloud/docs/errors/api_unconfigured title: type: string description: Short human-readable summary of the failure. examples: - Tool temporarily disabled - API not configured status: type: integer description: HTTP status code, matching the response's own status. code: type: string description: >- Stable machine-readable error code — branch on this, not `title`. enum: - tool_disabled - api_unconfigured detail: type: string description: Human explanation of this occurrence. request_id: type: string description: Correlation id, also sent as x-request-id. example: type: https://iotools.cloud/docs/errors/tool_disabled title: Tool temporarily disabled status: 503 code: tool_disabled detail: This tool is temporarily unavailable. Try again shortly. request_id: e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11 securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: iot_live_… ````