See how a starting balance plus regular monthly deposits grow with interest over time, right in your browser. Estimates only — not financial advice.
Savings Calculator Online
See how a starting balance plus regular monthly deposits grow with interest over time, right in your browser. Estimates only — not financial advice.
The Savings Calculator runs entirely in your browser. The balance, deposit, rate, and term you enter never leave your device and nothing is uploaded to ArrayKit. Results are estimates only and are not financial advice.
Savings Calculator projects how a starting balance plus regular monthly deposits grow once interest compounds every month. Enter your current balance, how much you plan to deposit each month, an annual interest rate, and a number of years, and it shows the final balance, the total amount you deposited, and the interest earned on top. It is useful for setting a savings goal, comparing how a higher monthly deposit or a better rate changes the outcome, or checking how long it takes to reach a target. Everything runs locally in your browser — your figures stay on your device and nothing is uploaded. These are estimates only and are not financial advice; verify important savings decisions with a qualified professional.
Features
Projects final balance from a starting amount plus monthly deposits
Monthly compounding matches how most savings and high-yield accounts accrue interest
Shows total deposited separately from interest earned
Instantly recalculates as you adjust the deposit amount, rate, or term
Copy a plain-text summary of the starting balance, deposit, rate, term, and results
Works with any currency amount — just type the numbers
Handles a 0% rate as a plain running total of deposits
Runs entirely in your browser with no figures sent anywhere
How to use the Savings Calculator
Enter your current starting balance
Enter how much you plan to deposit each month
Enter the annual interest rate and the number of years
Read the final balance, total deposited, and interest earned
Example
Input
$1,000 + $200/mo, 4%, 5 yr
Output
Final balance: ~$14,270
A $1,000 starting balance plus $200 a month at 4% for 5 years grows well past what you deposited.
Common errors & troubleshooting
Final balance looks lower than expected. — Enter the rate as a plain percent, e.g. 4 for 4%, not 0.04 — the Savings Calculator already divides by 100 internally.
Result shows only the starting balance with no growth. — Make sure the years field is greater than 0 — a zero or blank term returns the starting balance unchanged.
Interest earned shows as 0 even with a rate entered. — Check that the monthly deposit and starting balance are not both 0 — with nothing in the account, there is nothing for interest to compound on.
Numbers don't match a bank's exact projection. — Banks may compound daily, credit interest on different dates, or apply tiered rates. The Savings Calculator assumes simple monthly compounding as a close estimate, not an exact bank statement.
Frequently asked questions
What is the Savings Calculator?
It is a tool that projects how a starting balance plus regular monthly deposits grow over time once you add an annual interest rate. It reports the final balance, the total amount deposited, and the interest earned.
How does the Savings Calculator compound interest?
It compounds monthly: each month it adds interest on the current balance, then adds your deposit, matching how most everyday savings and high-yield accounts accrue interest.
Can I use the savings growth calculator with a 0% rate?
Yes. With a 0% rate, the final balance is simply your starting balance plus every monthly deposit, with no interest added — useful for comparing a plain savings jar to an interest-bearing account.
Does the monthly savings calculator account for taxes on interest?
No. It shows gross interest earned before any taxes. Depending on your account type and jurisdiction, some or all of that interest may be taxable — check with a tax professional for your situation.
Is the Savings Calculator's projection financial advice?
No. It gives estimates only, based on the numbers you enter and a simple monthly compounding model. It is not financial advice — confirm important savings decisions with a qualified professional.
Does the savings account calculator upload my balance or deposit amounts?
No. The Savings Calculator runs entirely in your browser. The balance, deposit, rate, and term you enter never leave your device and are not uploaded to ArrayKit.
Related tools
Compound Interest Calculator — Project savings growth with compound interest and optional regular contributions.
Investment Calculator — Solve for the ending amount, return, contribution or time of an investment.
CD Calculator — Calculate the maturity value and APY of a certificate of deposit.