I built a free tool to project investments in Mexico (Cetes, SOFIPOs, AFORE) and I’m looking for your feedback.

Hi everyone!

I’ve noticed for a while that most compound interest calculators online are either in USD or don't really account for the specific financial/tax context in Mexico. That’s why I decided to build MxCalc.

The goal was to create a clean, "no-registration-required" tool to help with:

• Compound Interest Calculations: Including monthly contributions.
• Cetes vs. SOFIPOs Comparison: To see where your money currently yields better returns.
• Quick Guides: I’ve added simplified info on AFORE and PPR for those just starting out.

The most important part: Privacy. I don’t store any data; everything is processed locally in your browser. This is strictly a tool for information and planning.

I would love for you to take a look and let me know:

1. Are there any other tools or calculators you'd like to see?
2. Are there any interest rates I should adjust to be more accurate?
3. How does the UI feel on your mobile device?

Anyone who wants access to the link can request it in the comments.Anyone who wants access to the link can request it in the comments.

I hope this helps someone plan their finances for 2026! Looking forward to your thoughts.