Interest Expense Accrual Journal Entry
Learn how to accrue interest expense at period-end for loans, notes payable, and lines of credit. Covers the calculation formula, monthly accruals, quarterly payment clearing, and partial-period prorations.
Learn how to accrue interest expense at period-end for loans, notes payable, and lines of credit. Covers the calculation formula, monthly accruals, quarterly payment clearing, and partial-period prorations.
Scenario
On October 1, Keystone Corp. borrows $120,000 on a 2-year bank loan at 6% annual interest, payable quarterly (January 1, April 1, July 1, October 1). The company prepares monthly financial statements. Record the month-end accruals for October, November, and December, then the quarterly payment on January 1.
Journal Entries
October 31 — Accrue one month of interest. Monthly interest = $120,000 × 6% / 12 = $600. The borrowing cost for October is recognized even though no payment is due until January.
| Account | Debit | Credit |
|---|---|---|
| Interest Expense | $600 | |
| Interest Payable | $600 |
November 30 — Accrue second month. Same calculation. Cumulative Interest Payable balance is now $1,200.
| Account | Debit | Credit |
|---|---|---|
| Interest Expense | $600 | |
| Interest Payable | $600 |
December 31 — Accrue third month. Cumulative Interest Payable is now $1,800, covering the full October–December quarter.
| Account | Debit | Credit |
|---|---|---|
| Interest Expense | $600 | |
| Interest Payable | $600 |
January 1 — Make quarterly interest payment. Pay the $1,800 that accumulated over the past three months. This clears the liability without creating additional expense.
| Account | Debit | Credit |
|---|---|---|
| Interest Payable | $1,800 | |
| Cash | $1,800 |
Explanation
Interest accrues continuously — every day that a loan balance is outstanding, the borrower is incurring interest cost. But payments happen on a schedule (monthly, quarterly, semi-annually). The gap between continuous accrual and periodic payment is why adjusting entries are needed. Without month-end accruals, Keystone’s October, November, and December income statements would each understate expenses by $600, and January’s would be overstated by $1,800 when the payment hits. The accrual entries allocate exactly $600 of interest cost to each month the loan is outstanding, matching the expense to the period that benefited from having the borrowed funds. The January 1 payment entry only touches the balance sheet — it clears the liability (Interest Payable) and reduces cash. No expense is recorded on payment day because the expense was already recognized through the three monthly accruals.
Variations
If the loan starts mid-month (e.g., October 15): Prorate the first month. October accrual = $120,000 × 6% × (16/365) = $315.62. November onward would be calculated using either 30/360 or actual/365 convention per the loan agreement.
If the company uses reversing entries: Reverse the December 31 accrual on January 1 (debit Interest Payable $600, credit Interest Expense $600). When the $1,800 payment is made, the full amount debits Interest Expense and credits Cash. The reversing entry and payment net to the correct $600 December expense and $0 January expense.
Variable-rate loan: If the rate resets monthly, recalculate each month’s accrual using the current rate. January: $120,000 × 5.5% / 12 = $550; February: $120,000 × 5.75% / 12 = $575, etc.
Common Mistakes to Avoid
- ✗Recording interest expense only when the cash payment is made — this bunches 3 months of expense into one month and leaves the other months understated
- ✗Forgetting to clear Interest Payable when the payment is made, leaving a phantom liability on the balance sheet
- ✗Using the wrong day-count convention — loan agreements specify whether to use 30/360, actual/360, or actual/365, and the calculation must match
- ✗Accruing interest on the original principal when the loan has been partially repaid — always use the current outstanding balance
FAQs
Common questions about this journal entry
Because interest cost is incurred every day the loan is outstanding. Each month that Keystone has $120,000 borrowed costs $600 in interest, whether or not a payment is due. Monthly accruals ensure each month’s income statement reflects its true borrowing cost. Without accruals, three months of expense would suddenly appear on one month’s income statement.
Monthly Interest = Outstanding Principal × Annual Interest Rate / 12. For Keystone: $120,000 × 0.06 / 12 = $600. For exact day calculations: Principal × Annual Rate × (Days in Month / 365). The loan agreement specifies which convention to use.
Interest payable is almost always a current liability because it represents interest that has accrued and will be paid within the next payment cycle (typically within a few months). The loan principal itself may be long-term, but the accrued interest on that loan is current.
As the borrower makes principal payments, the outstanding balance shrinks, so each month’s interest accrual decreases. For example, if Keystone repays $10,000 of principal, the next month’s interest is ($120,000 − $10,000) × 6% / 12 = $550. Amortizing loans automatically reduce the interest portion of each payment over time.
Interest expense is reported below operating income in the ‘Other Income and Expenses’ or ‘Non-Operating’ section. It is not part of operating expenses because borrowing costs relate to financing decisions, not day-to-day operations. This placement allows analysts to evaluate operating performance separately from capital structure decisions.