Savings & Investment Calculator
Track your trajectory toward financial milestones. Whether saving for an emergency fund, home down payment, or capital growth, calculate how steady monthly deposits combined with yield build serious wealth.
Current amount already saved
Amount consistently added each month
Annual interest rate (e.g. 4.5% - 5.0% HYSA, 7% - 9% equities)
Number of years you plan to save
Future total portfolio value
How to Use This Calculator
- Enter your existing savings or cash reserve balance.
- Set how much surplus cash flow you can reliably allocate each month.
- Enter the estimated annual yield of your savings vehicle (e.g. HYSA, CD, or index fund).
- Adjust the slider to your intended target horizon.
- See the exact split between your deposited cash and passive compound growth.
Formula & Calculation Methodology
Calculates periodic compound growth on initial liquid reserves combined with a recurring monthly deposit stream.
Worked Example
$5,000 initial balance, $400 monthly deposit at 5.0% APY over 5 years
Frequently Asked Questions
What is a High-Yield Savings Account (HYSA)?↓
An HYSA is an FDIC- or NCUA-insured bank account that pays significantly higher interest (typically 10x to 12x higher) than traditional checking or brick-and-mortar savings accounts, while preserving liquidity.
How does tax apply to savings account interest?↓
In the United States, interest earned in non-retirement accounts is taxed as ordinary income at your marginal tax bracket and reported annually on IRS Form 1099-INT.
When should I transition from savings accounts to investment funds?↓
Once you hold 3 to 6 months of living expenses in an emergency cash reserve, excess monthly cash flow is often more effectively deployed into diversified equity index funds for higher long-term inflation-adjusted growth.
Does this calculator lock funds like a Certificate of Deposit (CD)?↓
No, this models flexible savings with monthly liquidity. If using fixed CDs, early withdrawal penalties would apply if accessed prior to term maturity.
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Source Citation & Disclaimer
Informational tool only; not licensed tax, legal, or financial advice.