How do I calculate my potential tax savings?

Use the `evaluate_harvesting_opportunity` tool by providing your current positions, the applicable tax rate, and any reinvestment friction costs.

What is the wash sale rule window for the USA?

For the USA, the `get_wash_sale_window` tool confirms a 30-day period surrounding the transaction where you must avoid repurchasing substantially identical securities.

Can I retrieve tax rates for European countries?

Yes, use `retrieve_tax_rate_by_jurisdiction` to get the flat capital gains rate for supported EU nations.

Tax Loss Harvesting Calculator MCP Connector for Claude

A+

Calculate the financial benefits and tax savings from harvesting capital losses.

3 tools Official Updated Jun 28, 2026 Official Vinkius Partner

More Details Connect to Claude

This MCP server provides specialized tools to calculate the economic impact of tax-loss harvesting. Use evaluate_harvesting_opportunity to determine avoided taxes and net savings after reinvestment friction. You can also use get_wash_sale_window to check compliance periods for different jurisdictions like the USA or Germany, and retrieve_tax_rate_by_jurisdiction to find applicable capital gains rates based on your location and income band.

tax-loss-harvestingcapital-gainsusa-taxeu-taxfinancial-planning

Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_jSCMED19kifpgyPFj9uGc4g1EhRru6u9Swzn5eMr/mcp

② Claude Code (terminal)

claude mcp add --transport http tax-loss-harvesting-calculator https://edge.vinkius.com/vk_preview_jSCMED19kifpgyPFj9uGc4g1EhRru6u9Swzn5eMr/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "tax-loss-harvesting-calculator": {
      "url": "https://edge.vinkius.com/vk_preview_jSCMED19kifpgyPFj9uGc4g1EhRru6u9Swzn5eMr/mcp"
    }
  }
}

Get full access on Vinkius

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