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CALCULATOR
Low Rate vs. Cash Back Auto Financing Calculator
How It Works
When buying a car, you may be faced with either a cash back incentive or lower interest rate. This calculator outlines the total amount you’ll pay with either option, comparing total savings.
Enter the price, down payment, loan term, and interest rate (not the low offer rate) for the car you’re hoping to buy. You’ll also be given options to enter a trade in value. When done, you’ll see which offer saves you more money, the predicted loan amount, and how much you could save.
What is an auto refinance calculator and how does it work?
When buying a car, you may be faced with either a cash back incentive or lower interest rate. This calculator outlines the total amount you’ll pay with either option, comparing total savings.
Enter the price, down payment, loan term, and interest rate (not the low offer rate) for the car you’re hoping to buy. You’re also given options to enter a trade in value. When done, you’ll see which offer saves you more money, the predicted loan amount, and how much you could save.
What are the pros and cons of trading my car in for cash back?
Trading in your car for cash puts money directly in your pocket, and can immediately reduce the overall cost of a new car. This can be particularly beneficial if you need to lower your out-of-pocket expenses. However, the trade-off is that you might not get the absolute highest value for your car compared to selling it privately. Additionally, the amount of cash back offered may be less than the potential savings from a lower interest rate over the loan term.
When is it better to trade my car in for a lower interest rate?
Trading in your car for a lower interest rate is generally advantageous when you plan to finance a significant portion of your new vehicle and keep it for an extended period. Over the life of the loan, even a small reduction in the interest rate can result in substantial savings. This option is ideal if you prioritize long-term financial benefits and want to minimize the total amount you pay for the car.
How does the car trade-in calculator help me decide between cash back and lower interest?
Our calculator allows you to input the trade-in value of your car, the cash back offer, and the potential interest rate savings. By comparing these figures, you can see the immediate impact of cash back versus the long-term savings of a lower interest rate. The calculator provides a clear financial picture, helping you determine which option aligns best with your financial goals and circumstances.
What factors should I consider beyond cash back and interest rates?
Beyond the immediate cash back and interest rate savings, consider the condition of your trade-in vehicle, the current market demand for your car’s make and model, and the terms of the loan agreement. Of course, don’t forget to factor in your personal financial situation, including your monthly budget and long-term financial plans. If you decide to get a new car after trading your old car in, aim for your car payment to be less than 15% of your after-tax income (thank you, 50/30/20 rule!)
Can I negotiate both the trade-in value and the interest rate?
Yes, it’s possible to negotiate both the trade-in value of your car and the interest rate on your new vehicle loan. Do your research beforehand to understand the market value of your trade-in and the average interest rates offered by lenders. If you play your cards right, you may be able to walk away with cash in your pocket and a lower interest rate for a new car. Remember to always get quotes from more than one dealer or lender!
Can I trade in a financed car?
Yes, you can trade in a financed car, but the process is a bit more complex. The dealership will assess your car’s value and compare it to your remaining loan balance. If the trade-in value is higher than your loan balance—or you have a positive equity in the car—the difference can be applied towards your new vehicle. However, if your loan balance exceeds the trade-in value, also known as negative equity, you’ll need to pay the difference, which can be rolled into your new loan. It’s crucial to understand your loan balance and the car’s market value before proceeding.
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.
Disclaimer: This calculator provides estimates for informational purposes only. Actual savings may vary. Consult with a financial advisor for personalized guidance.
Posted In: Auto
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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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