How to Use the Savings Calculator
- Enter your starting balance and monthly deposit.
- Enter the account’s APY.
- Enter how many years you plan to save.
- Optionally enter a savings goal.
- Press Calculate and read the projected balance and time to goal.
Formula
Monthly rate = (1 + APY)^(1/12) − 1 Each month: balance = balance × (1 + monthly rate) + deposit Months to goal: repeat until balance ≥ goal
Example Calculation
Starting with $5,000 and adding $300 a month at 4.5% APY for 5 years gives about $26,328. You deposit $23,000 and earn about $3,328 in interest. Setting a $30,000 goal would show roughly 5 years and 10 months.
What Is a Savings Calculator?
A savings calculator projects balance growth from deposits and interest. It is helpful for turning a goal like a down payment or a vacation into a monthly amount and a timeline.
How Interest Adds Up
Interest on savings is typically small compared with what you deposit in the first few years, so consistent deposits do most of the work early on. Over longer periods compounding becomes more visible.
Factors That Affect the Result
- Monthly deposit size and consistency.
- The APY, which can change with the market.
- Time: more months means more compounding.
- Withdrawals, which reduce the base earning interest.
Tips
- Automate deposits right after payday.
- Keep goals in separate accounts so you can track each one.
- Compare APYs periodically, but weigh switching costs.
- Build an emergency fund first with the emergency fund calculator.
Common Mistakes
- Assuming a promotional rate will last.
- Keeping long-term goals in cash and losing ground to inflation.
- Forgetting fees that reduce interest.
For long-horizon goals, see how growth changes with the compound interest calculator.