| What it does | Free Australian tax API and MCP server for AI agents
| Your WhatsApp number, as an API
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| Stage | Not given
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| Founded | Not given
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| Based in | AU
| IL
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| Pricing model | Open source
| Paid
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| Pricing | Not given
| $7.50 per WhatsApp number per month. First month free with code WHATSAPP100. No card needed. Billed monthly in advance. Includes text, media, polls, lists and buttons, webhooks for replies and deliveries, chats, contacts and message history.
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| Key features | - Take-home pay calculator for Australian salaries and hourly rates
- PAYG withholding calculation using ATO Schedule 1 formulas
- Bonus and commission withholding calculation
- Annual tax estimate with offsets and Medicare levy
- Superannuation guarantee calculation at 12%
- ABN, ACN and TFN validation using check-digit algorithms
- MCP server integration for Claude, ChatGPT and Cursor
- JSON API accessible without sign-up or API key
- Open-source JavaScript npm library with no dependencies
- Tax rates and thresholds for 2025–26, 2026–27 and 2027–28
| - Send text messages to any phone number or group with delivery status
- Upload and send images, video and files
- Create polls with 2 to 12 options and interactive menus
- Receive webhooks for messages, deliveries, reads and connection changes
- Query chats, contacts and past message history
- Connect via HTTP API, Cloud MCP or Local MCP
- Each number has its own replaceable API token
- Number stays on your phone with no device to host
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| What makes it different | - Uses ATO's own published formulas, not model memory
- Tested against all 432 ATO sample rows for each tax year
- No sign-up, API key or authentication required
- Open-source code available on GitHub
- Free for reasonable use with no storage of amounts entered
| - Multiple connection methods including cloud MCP for ChatGPT and Claude
- Open-source local MCP server for self-hosted use
- Fully separated numbers with no cross-data access between tokens
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 8 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 0 | 16 |
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| Referring domains (Majestic) | 0 | 2 |
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AfterTax AU
apisapp