How to Use This Savings Calculator
This calculator has two modes ??? switch between them using the tabs above the calculator:
- Balance Growth ??? enter your initial deposit, monthly contribution, interest rate, and time period to see your projected balance.
- Savings Goal ??? enter a target amount and the calculator tells you the required monthly deposit to reach it in your chosen timeframe.
The Inflation Adjustment toggle shows your future balance in today's purchasing power, assuming ~3% average annual inflation. This is especially useful for long-term goals like a home down payment or retirement planning, where inflation meaningfully erodes the real value of money.
Where to Earn the Best Savings Rates (2026)
Where you keep your savings dramatically impacts how fast it grows. Here's a comparison of typical rates:
| Account Type | Typical APY | Best For |
|---|---|---|
| Traditional bank savings | 0.01%???0.10% | Emergency access ??? not growth |
| Credit union savings | 0.50%???2.00% | Better than banks, still low |
| High-yield savings (HYSA) | 4.00%???5.25% | Emergency fund + short-term goals |
| Money market account | 4.00%???5.00% | Larger balances, check access |
| 1-year CD | 4.50%???5.50% | Known future date, locked rate |
| S&P 500 index fund (historical avg.) | ~10% nominal / ~7% real | Long-term (5+ years), accepts volatility |
Rates as of 2026. HYSA and CD rates change with Federal Reserve policy. Always compare current rates before opening an account.
The 50/30/20 Rule and Savings
A popular budgeting guideline suggests allocating 50% of after-tax income to needs, 30% to wants, and 20% to savings and debt repayment. If you earn $5,000/month after tax, that's $1,000/month toward savings. Enter that into the Monthly Deposit field above to see how quickly it compounds at current HYSA rates.
Emergency Fund First
Before investing, most financial advisors recommend building a 3???6 month emergency fund in a liquid, high-yield savings account. This is the foundation everything else is built on ??? it prevents you from taking on high-interest debt when unexpected expenses arise. Use the Savings Goal mode to calculate how long it'll take to build your emergency fund at your current contribution rate.