SextanteTake the helm of your money
Clear calculators for every decision and all your investments in one place: bring together what you hold across different banks, track it with up-to-date prices and, if you like, connect it to your own AI assistant. The full picture of your money, so the decisions are yours.
Your instrument to find your bearings
The essentials to take control of your money, no fluff and no jargon.
A complete suite of calculators
Investing, FIRE, mortgages, savings, debt and taxes: a tool for every decision.
Real Spanish tax focus
Income tax, wealth, gifts and more, with Spain's actual brackets and rules.
All your investments, in one place
Bring together your investments from several banks and track your whole net worth with up-to-date prices.
Understand what you calculate
Clear guides in Learn to understand what you calculate and why, step by step.
Connect your own AI assistant
Sextante exposes your portfolio over MCP, the open standard for connecting AI models. Link your own Claude or ChatGPT and let it analyze your investments with your real data: you bring the assistant, we bring the information.
Calculators for every course
Browse the tools by category and start with whatever interests you most.
Starting from scratch?
In Learn you'll find simple guides on compound interest, mortgages, investing and financial independence. Written to understand everything from the ground up.
Sextante is free and built by one person
The essentials are and will stay free, with no paywalls. If you find it useful and want it to keep growing, you can buy me a coffee. Every contribution helps cover the server and the time I put into it.
Meet the person behind it →Pick an amount
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Sextante provides indicative information for informational purposes and does not constitute financial or tax advice. Don't make decisions based on these calculations alone: always check with a professional and official sources.