Cost Calculation for A 0 APR Balance Transfer Over Time

What is a 0 APR Balance Transfer?

A 0 APR balance transfer is a promotional offer from credit card issuers that allows you to transfer a balance from one credit card to another with a temporary 0% interest rate. This can be a useful strategy to pay off high-interest debt, but it's important to understand the terms and conditions.

Typically, a 0 APR balance transfer offer includes:

• A promotional 0% interest rate for a set period (usually 12-18 months)
• A balance transfer fee (usually 3-5% of the transferred amount)
• No annual fees during the promotional period
• Standard purchase APR that applies after the promotional period

Once the promotional period ends, the transferred balance will accrue interest at the standard purchase APR, which is typically much higher than the promotional rate.

How Does Interest Accrue on a Balance Transfer?

When you transfer a balance to a 0 APR card, the interest calculation begins immediately. The interest is calculated daily on the outstanding balance and added to your account. Here's how it works:

1. The credit card company calculates the daily interest rate based on the annual percentage rate (APR).
2. Each day, the interest is calculated and added to your balance.
3. When you make a payment, the payment first goes toward the interest, then the principal.
4. Once the promotional period ends, the interest rate reverts to the standard purchase APR.

This means that even though you're not paying interest during the promotional period, interest is still accruing and will be added to your balance when the promotional period ends.

Formula Used

The total cost of a 0 APR balance transfer can be calculated using the following formula:

Where:

• Balance Transferred - The amount of debt you're transferring to the 0 APR card
• Balance Transfer Fee - The percentage fee charged by the credit card issuer (typically 3-5%)
• Remaining Balance - The amount of the balance that remains after the promotional period ends
• Standard Purchase APR - The interest rate that applies after the promotional period ends (typically 15-25%)

This formula helps you estimate the total cost of the balance transfer, including both the upfront fee and the interest that will accrue after the promotional period ends.

Worked Example

Let's look at an example to illustrate how the cost calculation works.

Scenario:

• Balance transferred: $5,000
• Balance transfer fee: 3%
• Promotional period: 18 months
• Standard purchase APR: 18%
• Minimum monthly payment: 2% of the remaining balance

Step 1: Calculate the balance transfer fee

Balance transfer fee = $5,000 × 3% = $150

Step 2: Calculate the interest that will accrue after the promotional period

Assuming you make the minimum payment each month, the remaining balance after 18 months will be approximately $4,850. The interest charged will be $4,850 × 18% = $873.

Total cost = Balance transfer fee + Interest = $150 + $873 = $1,023

In this example, the total cost of the balance transfer is $1,023, which includes both the upfront fee and the interest that will accrue after the promotional period ends.