SnowballFi: Compound Interest

Watch your money snowball. SnowballFi is a powerful yet simple compound interest calculator and FIRE planner that shows exactly how your investments grow over time — after inflation and taxes, not just on paper.

Whether you're saving for retirement, building passive income, or chasing financial independence (FIRE), SnowballFi gives you the real numbers behind your strategy.

KEY FEATURES

• Compound interest calculator — set your initial capital, contribution amount and frequency (daily, weekly, monthly, quarterly, or annual).
• Flexible contributions — choose start- or end-of-period timing and see the difference instantly.
• Annual contribution growth — increase your investments each year by a percentage or a fixed amount.
• Inflation adjustment — see your real purchasing power, not just nominal figures.
• Tax on gains — apply a withholding rate for a realistic after-tax result.
• FIRE target — set your desired monthly income and find out when you reach financial independence.

ADVANCED INSIGHTS

• Gross and net annual return
• Real CAGR and inflation-adjusted capital
• Estimated tax cost and net capital after tax
• Effective Annual Rate (EAR)
• Contribution leverage, payback period and Net Present Value (NPV)
• Interest momentum and wealth velocity

VISUALIZE EVERYTHING

• Interactive charts of your capital growth
• Clear summary and milestone breakdown
• Export your projection to PDF to save or share

WHY SNOWBALLFI

• Clean, fast and easy to use
• No account required
• Works fully offline
• Designed for beginners and experienced investors alike

Start planning your financial future today — and watch your wealth snowball.

SnowballFi is an educational planning tool and does not provide financial advice.