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CALCULATOR
Savings Calculator
How to Calculate Interest on Savings
With a savings account, your money grows over time based on how much you save each month, the interest rate on the account, and how long you save. This savings calculator is designed to illustrate how your savings will grow using compound interest, which is the most common type of interest for savings accounts. The interest in this calculator is compounded monthly.
Enter how much your initial deposit will be or how much you currently have in savings as the Starting Amount. Move the Monthly Savings slider to the amount you plan to contribute each month. Adjust the Interest Rate slider to the interest rate on your savings account. Finally, move the Years to Save slider to see how much you can save over time if you keep saving the same amount each month.
Savings Calculator Help
Starting Amount: This is the initial principal that you plan to deposit or that’s in your account now.
Monthly Savings: This slider represents the amount of money you intend to contribute every month.
Years to Save: This shows how many years your savings will be in the account.
Interest Rate: This is the compound interest rate (APY) of your savings account.
FAQS
What is an average interest rate?
Interest rates vary greatly depending on the type of account, supply and demand, and what the Federal Reserve sets. For a typical savings account, you could expect anywhere from 0.01-0.08%. For a high yield savings account, on the other hand, it’s not uncommon to see interest rates of 0.2%-0.6%. A CD (certificate of deposit) can earn 0.07-1.2%, or even higher, depending on the length and financial institution.
How does compound interest work?
Compound interest means that the money you earn in interest also earns interest, rather than just the principal. Basically, the amount of interest you earn will grow every time interest is added (or compounded) rather than staying the same. This makes it ideal for savings accounts. The formula for calculating compound interest is A = P (1 + r/n)^(nt). The variables for this formula are:
- A = Total amount
- P = Principal or staring amount
- r = Annual interest rate
- n = Number of times interest is added per time period
- t = Number of time periods
How much should I save each month?
Some people save a set amount, such as $200. The Saving With a Purpose Coach can help you determine what you’ll need to save each month in order to reach your goals in your timeline. Others prefer to save a percentage of their monthly income. The 50/30/20 Rule can help in that respect. With this budgeting technique, you spend 50% of your income on needs, 30% and wants, and save the remaining 20%.
How do you calculate interest on a savings account?
The simplest way to calculate interest is to use an online savings calculator like this one. But if you want to do the math yourself, you can plug your information into the compound interest formula of A = P (1 + r/n)^(nt).
Where should I keep my savings?
An account at an insured bank or credit union is by far the best place to keep your savings. You may opt for a regular savings account, a CD, an IRA, or one of the many other savings vehicles available. What’s most important is that, due to insurance from the FDIC and NCUA, your money will be safe as it grows.
Where can I put my money to earn the most interest?
A high yield savings account or CD will likely earn you the highest interest rate. Be aware, though, that money in a CD cannot be withdrawn until it matures without facing penalties and fees.
How much would you earn on $1,000?
The interest you’ll earn on $1,000 depends on the interest rate of the account and how long you store it there. The longer it’s saved and the higher the interest rate, the more you’ll earn. For example, if you kept $1,000 in an account for 5 years with a 0.25% interest rate, you would earn $25 in interest. But that same $1,000 in an account for 20 years with a 0.5% interest rate would earn $105 in interest. You can use the savings calculator above to compare other options.
Disclaimer
While we hope you find this content useful, it is only intended to serve as a starting point. Your next step is to speak with a qualified, licensed professional who can provide advice tailored to your individual circumstances. Nothing in this article, nor in any associated resources, should be construed as financial or legal advice. Furthermore, while we have made good faith efforts to ensure that the information presented was correct as of the date the content was prepared, we are unable to guarantee that it remains accurate today.Neither Banzai nor its sponsoring partners make any warranties or representations as to the accuracy, applicability, completeness, or suitability for any particular purpose of the information contained herein. Banzai and its sponsoring partners expressly disclaim any liability arising from the use or misuse of these materials and, by visiting this site, you agree to release Banzai and its sponsoring partners from any such liability. Do not rely upon the information provided in this content when making decisions regarding financial or legal matters without first consulting with a qualified, licensed professional.
Posted In: Savings
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Lost or Stolen Card?
We’re here to help. If your card has been misplaced or stolen, we’ll act quickly to protect your account. You can report a missing card in the following ways:
Online and Mobile Banking
Log in and follow these three easy steps:
- From the menu, select Tools
- Select Card Manager
- Report your card as Lost or Stolen*
By phone or at a Grow store
Call 800.839.6328 to speak to a team member or let us know in person at any Grow store.Notice: Taking these steps will immediately cancel your card to prevent unauthorized transactions. If you find your card later after reporting it lost or stolen, it cannot be reactivated.
*The selected card will be canceled and removed from Manage Cards when it is reported as lost. Once your new card has been issued, it will be available in Manage Cards. The replacement card will have a new card number. Your replacement card will be sent to the mailing address on your account, and you should receive it within 7 to 10 business days.
How to Find Your Routing & Account Numbers
When you make a payment online, by phone or on a mobile device, you may be asked for our routing number and your checking account number. Credit unions and banks use these numbers to identify accounts and make sure money gets where it’s supposed to be. You’ll also need to provide your routing and checking account numbers for:
- Direct deposits
- Electronic checks
- Military allotments
- Wire transfers
Where to Find Your Routing & Checking Account Numbers
Your personal checks include both our routing number and your account number, as shown on the Grow check example below.

Where to Find Your Checking Account Number in Grow Online and Mobile Banking
If you don’t have a physical check on hand, you can also locate your Checking Account Number for Electronic Transactions in Grow Online and Mobile Banking.*
Here’s how to find it:
- In the Grow Mobile Banking app, select your checking account, then tap Show Details in the top right corner.
- In Grow Online Banking, select your checking account, then click Account Details.
Don’t have a Grow check or Online Banking? No worries.
Visit any Grow store or call us and ask for a Direct Deposit Form. It lists both your routing number and checking account number.
Making a Loan Payment
When it comes to making payments, we try to make it as painless as possible to pay your loan every month. We have several different ways to pay, including convenient online options.
Pay Online
You have two ways to pay online by transferring funds from another bank or credit union.
- Grow Online Banking (Preferred payment method for any loan)
This is the simplest way to pay your loan. You can make one-time payments or set up automatic recurring payments in Grow Online Banking. Once you log in, select “Transfer/Payments” from the menu. If you’re not enrolled in Grow Online Banking yet, you can set up your account in just a few minutes.
Log In
- Debit Card or ACH (Available for auto, personal loans and HELOCs)
Note: ACH and debit card payments are not available for credit cards or most mortgages, except HELOCs.
We accept ACH payments with no additional fees, consumer Mastercard® and Visa® debit cards with a convenience fee of $4.95, or commercial Mastercard® and Visa® debit cards with a convenience fee of 2.95% of the payment amount. To get started with an online ACH or debit card payment, select Pay Now below.
Pay Now
Pay by Mail
You can also pay any Grow loan by check through the mail. Please remember to include your account number and Grow loan number on the check. (For credit card payments, please do not write your 16-digit credit card number on the check, which can cause a delay in processing the payment.)
Address for auto, credit card, personal loan and HELOC payments:
Grow Financial Federal Credit Union
P.O. Box 75466
Chicago, IL 60675-5466Address for personal first or second mortgages and home equity payments:
Grow Financial Federal Credit Union
P.O. Box 11733
Newark, NJ 07101-4733You Are About To Leave GrowFinancial.org
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