ELI5: 11th District Cost of Funds Index (COFI)

Advanced Definition
Last updated: Jul 27, 2023

11th District Cost of Funds Index (COFI) - The Magic Number for Adjustable-Rate Mortgages

Imagine you have a magical meter that tells you how much it costs for banks to get the money they lend to people. Well, the 11th District Cost of Funds Index (COFI) is like that magic meter! It's a special number that helps determine the interest rate on certain home loans. Don't worry; I'll explain it in simple terms using our magical meter analogy!

💡 Key Ideas

  • Definition: The 11th District COFI is a magic number that represents the average interest rate banks in the 11th Federal Home Loan Bank District pay on their deposits. It's a benchmark used to set the interest rate on certain adjustable-rate mortgages (ARMs).

  • Adjustable-Rate Mortgages (ARMs): The 11th District COFI is used to adjust the interest rate on ARMs periodically. When the COFI goes up, the interest rate on ARMs increases, and when it goes down, the interest rate decreases.

  • Calculation: The 11th District COFI is calculated based on a weighted average of interest rates from various deposit sources, such as checking accounts, savings accounts, and certificates of deposit (CDs).

  • Real-World Impact: The 11th District COFI helps keep the interest rate on ARMs in line with the cost of funds for banks, ensuring a fair balance for both borrowers and lenders.

  • Economic Indicator: Changes in the 11th District COFI can provide insights into the health of the economy and the cost of borrowing funds for banks in the region. It's closely watched by investors and policymakers.

Understanding the 11th District COFI

Okay, let's break it down further:

What is the 11th District COFI?

The 11th District COFI is like a magic meter that shows how much interest banks pay to borrow money from their depositors and other sources. Just like your magic meter indicates the cost of magical energy, the 11th District COFI shows the cost of funds for banks.

How Does It Work?

Banks need money to lend to people who want to buy homes, just like wizards need magical energy to perform spells. They get this money from different sources, like people depositing money into their accounts or borrowing from other banks. The 11th District COFI looks at how much interest banks pay on these funds.

The magic number is calculated based on a weighted average of interest rates that banks in the 11th Federal Home Loan Bank District pay on their deposits. It includes rates from various sources, like checking accounts, savings accounts, and certificates of deposit (CDs).

Why Is It Important?

The 11th District COFI is essential because it's used to set the interest rate on certain adjustable-rate mortgages (ARMs). These are like magical home loans where the interest rate changes over time, just like your magic meter fluctuates as you use more or less magical energy.

Banks use the 11th District COFI as a benchmark to adjust the interest rate on ARMs. When the magic number goes up, the interest rate on ARMs increases, and when it goes down, the interest rate decreases. It helps keep the interest rate on ARMs in line with the cost of funds for banks, ensuring a fair balance for both borrowers and lenders.

Real-World Example: The Enchanted Mortgage Adventure

Let's imagine you're a curious wizard named Alex, and you're ready to buy an enchanted house in the magical kingdom. You need a magical home loan to make your dream come true.

You visit the local bank, and they offer you two types of home loans: a fixed-rate mortgage and an adjustable-rate mortgage (ARM).

  • Fixed-Rate Mortgage: This is like a magic spell with a constant effect. The bank tells you that your interest rate will stay the same throughout the entire loan term, whether it's for 15 or 30 years. It's like having a stable magic meter that doesn't change.

  • Adjustable-Rate Mortgage (ARM): This is like a dynamic magic spell. The bank says that your interest rate will start with a lower rate than the fixed-rate mortgage, making your initial monthly payments more affordable. However, they also explain that the rate can change periodically based on the 11th District COFI, just like your magic meter fluctuates as you use different amounts of magical energy.

To help you decide, the bank shows you a magical table that displays how the interest rate on the ARM could change over time based on the 11th District COFI. Let's take a look at a simplified version of the table:

Year11th District COFIInterest Rate Adjustment
Year 12%+2%
Year 23%+1%
Year 33.5%+0.5%
Year 43.2%-0.3%

In this example, you start with an initial interest rate of 4% on your ARM. In the first year, the 11th District COFI is 2%, so your interest rate adjusts to 6%. In the second year, the COFI increases to 3%, leading to a rate adjustment of 7%. In the third year, the COFI rises to 3.5%, causing a smaller rate adjustment of 7.5%. However, in the fourth year, the COFI drops to 3.2%, resulting in a rate decrease to 3.7%.

So, with an ARM, you get the benefit of lower initial payments, but you also take the risk of potential rate increases over time. It's like going on a magical mortgage adventure with ever-changing spells! Before making your decision, make sure to understand how the 11th District COFI can affect your monthly payments and choose the option that fits your magical homeownership journey best!

Conclusion

The 11th District Cost of Funds Index (COFI) is like a magic meter that shows how much banks pay to borrow the money they lend to people. It's a crucial number used to set the interest rate on certain adjustable-rate mortgages. So, next time you hear about the 11th District COFI, you'll know it's not just a number - it's a magic tool for adjusting home loan rates!