What is the Average Daily Balance Method?

The average daily balance is a common accounting method that calculates interest charges by considering the balance invested or owed at the end of each day of the billing period, rather than the balance invested or owed at the end of the week, month, or year.

Understanding the Average Daily Balance Method

The federal Truth-In-Lending-Act (TILA) requires lenders to disclose their method of calculating finance charges, as well as annual percentage rates (APR), fees, and other terms, in their terms and conditions statement. Providing these details makes it easier to compare different credit cards.

TILA permits the interest owed on credit card balances to be calculated in various different ways. The most common methods are:

• Average daily balance method: Uses the balance on each day of the billing cycle, rather than an average balance throughout the billing cycle, to calculate finance charges.
• Previous balance method: Interest charges are based on the amount owed at the beginning of the previous month’s billing cycle.
• Adjusted balance method: Bases finance charges on the amount(s) owed at the end of the current billing cycle after credits and payments have been posted.

How the Average Daily Balance Method Works

The average daily balance totals each day’s balance for the billing cycle and divides by the total number of days in the billing cycle. Then, the balance is multiplied by the monthly interest rate to assess the customer’s finance charge—dividing the cardholder’s APR by 12 calculates the monthly interest rate. However, if the lender or card issuer uses a method that compounds interest daily, the interest associated with the day’s ending balance gets added to the next day’s beginning balance. This will result in higher interest charges and the reader should confirm which method is being used.

The average daily balance credits a customer’s account from the day the credit card company receives a payment. To assess the balance due, the credit card issuer sums the beginning balance for each day in the billing period and subtracts any payments as they arrive and any credits made to the customer’s account that day.

Cash advances are usually included in the average daily balance. The total balance due may fluctuate daily because of payments and purchases.

Average Daily Balance Method Example

A credit card has a monthly interest rate of 1.5 percent, and the previous balance is $500. On the 15th day of a billing cycle, the credit card company receives and credits a customer’s payment of $300. On the 18th day, the customer makes a $100 purchase.

The average daily balance is ((14 x 500) + (3 x 200) + (13 x 300)) / 30 = (7,000 + 600 + 3,900) / 30 = 383.33. The bigger the payment a customer pays and the earlier in the billing cycle the customer makes a payment, the lower the finance charges assessed. The denominator, 30 in this example, will vary based on the number of days in the billing cycle for a given month.

Average Daily Balance Method Vs. Adjusted Balance Method Vs. Previous Balance Method

Interest charges using the average daily balance method should be lower than the previous balance method, which charges interest based on the amount of debt carried over from the previous billing cycle to the new billing cycle. On the other hand, the average daily balance method will likely incur higher interest charges than the adjusted balance method because the latter bases finance charges on the current billing period’s ending balance.

Card issuers use the adjusted balance method much less frequently than either the average daily balance method or the previous balance method.

Special Considerations

Some credit card companies previously used the double-cycle billing method, assessing a customer’s average daily balance over the last two billing cycles.

Double-cycle billing can add a significant amount of interest charges to customers whose average balance varies greatly from month to month. The Credit CARD Act of 2009 banned double-cycle billing on credit cards.

What Is Adjusted Gross Income (AGI)?

Adjusted gross income (AGI) is the figure that the Internal Revenue Service (IRS) uses to determine your income tax liability for the year. It is calculated by subtracting certain adjustments from gross income, such as business expenses, student loan interest payments, and other expenses. After calculating a taxpayer’s AGI, the next step is to subtract deductions to determine their taxable income.

The IRS also uses other income metrics, such as modified AGI (MAGI), for specific programs and retirement accounts.

Understanding Adjusted Gross Income (AGI)

As prescribed in the United States tax code, AGI is a modification of gross income. Gross income is simply the sum of all the money you earned in a year, which may include wages, dividends, capital gains, interest income, royalties, rental income, alimony, and retirement distributions, before tax or other deductions. AGI makes certain adjustments to your gross income to reach the figure on which your tax liability will be calculated.

Many U.S. states also use the AGI from federal returns to calculate how much individuals owe in state income taxes. States may modify this number further with state-specific deductions and credits.

Common Adjustments

The items subtracted from your gross income to calculate your AGI are referred to as adjustments to income, and you report them on Schedule 1 of your tax return when you file your annual tax return. Some of the most common adjustments are listed here, along with the separate tax forms on which a few of them are calculated:

• Alimony payments (for divorces filed before Jan. 1, 2019)
• Early withdrawal penalties on savings
• Educator expenses
• Employee business expenses for armed forces reservists, qualified performing artists, fee-basis state or local government officials, and employees with impairment-related work expenses (Form 2106)
• Health Savings Account (HSA) deductions (Form 8889)
• Moving expenses for members of the armed forces (Form 3903)
• Self-employed Simplified Employee Pension (SEP), Savings Incentive Match Plan for Employees of Small Employers (SIMPLE), and qualified plans
• Self-employed health insurance deduction
• Self-employment tax (the deductible portion)
• Student loan interest deduction

How to Calculate Adjusted Gross Income

If you use software to prepare your tax return, it will calculate your AGI once you input your numbers. If you calculate it yourself, you’ll begin by tallying your reported income for the year. That might include job income, as reported to the IRS by your employer on a W-2 form, plus other income, such as dividends and miscellaneous income, reported on 1099 forms.

Next, you add any taxable income from other sources, such as profit on the sale of a property, unemployment compensation, pensions, Social Security payments, or anything else that hasn’t already been reported to the IRS. Many of these income items are also listed on IRS Schedule 1.

The next step is to subtract the applicable adjustments to the income listed above from your reported income. The resulting figure is your AGI. To determine your taxable income, subtract either the standard deduction or your total itemized deductions from your AGI. In most cases, you can choose whichever gives you the most benefit.

For example, the standard deduction for tax returns for married couples filing jointly was $25,900 in 2022, rising to $27,700 in 2023, so couples whose itemized deductions exceed that amount would generally opt to itemize, while others would take the standard deduction.

The IRS provides a list of itemized deductions and the requirements for claiming them on its website. Your AGI also affects your eligibility for many of the deductions and credits available on your tax return. In general, the lower your AGI, the more significant the number of deductions and credits you will be eligible to claim, and the more you’ll be able to reduce your tax bill.

An Example of AGI Affecting Deductions

Let’s say you had some significant dental expenses during the year that weren’t reimbursed by insurance, and you’ve decided to itemize your deductions. You are allowed to deduct the portion of those expenses that exceed 7.5% of your AGI.

This means that if you report $12,000 in unreimbursed dental expenses and have an AGI of $100,000, you can deduct the amount that exceeds $7,500, which is $4,500. However, if your AGI is $50,000, the 7.5% reduction is just $3,750, and you’d be entitled to deduct a larger amount of that $12,000, in this case $8,250.

Adjusted Gross Income (AGI) vs. Modified Adjusted Gross Income (MAGI)

In addition to AGI, some tax calculations and government programs call for using what’s known as your modified adjusted gross income, or MAGI. This figure starts with your AGI, then adds back certain items, such as any deductions you take for student loan interest or tuition and fees.

Your MAGI is used to determine how much, if anything, you can contribute to a Roth individual retirement account (Roth IRA) in any given year. It is also used to calculate your income if you apply for Marketplace health insurance under the Affordable Care Act (ACA).

Many people with relatively uncomplicated financial lives find that their AGI and MAGI are the same number or very close.

Adjusted Gross Income vs. Gross Income vs. Taxable Income

Your gross income is all of the money you’ve earned in a year that isn’t exempt from taxation. This can be in the form of salary, wages, interest, dividends, capital gains, and so on.

Your adjusted gross income takes that amount and takes out certain qualified expenses and adjustments.

Taxpayers can then take either the standard deduction for their filing status or itemize the deductible expenses they paid during the year. You’re not permitted to both itemize deductions and claim the standard deduction. The result is your taxable income.

Frequently Asked Questions

The Bottom Line

Adjusted gross income, or AGI, is your gross income after it has been adjusted for certain qualified deductions that are permitted by the Internal Revenue Service (IRS). These qualified deductions reduce an individual’s gross income, thus reducing the taxable income that they will ultimately have to pay taxes on. You can save money come tax season by lowering your AGI, which will lower your taxable income, in turn. However, many of the adjustments allowed for AGI are specific for particular circumstances that may not apply to everyone.