Contact Best Fire Calculator

We'd love to hear from you. Whether you've spotted a bug, have a question about how the calculator works, or want to suggest a feature, send us a note and we'll get back to you.

contact@bestfirecalculator.com

We typically reply within 2–3 business days.

What to reach out about

• Questions about Coast, Lean, or Fat FIRE and how the calculator models them
• Bug reports or unexpected results in a projection
• Feature requests and suggestions for the planner
• Press, partnership, or general enquiries

Please note: we can answer questions about the tool itself, but we cannot provide personal financial, investment, or tax advice. Best Fire Calculator is an educational tool only — see our Terms & Conditions.