Quick Answer: Interest income is revenue earned from lending money or holding interest-bearing assets such as notes receivable, bonds, or bank deposits. Under accrual accounting, interest income is recorded when it is earned, not when cash is received. The standard journal entry is a debit to Interest Receivable (or Cash) and a credit to Interest Income (or Interest Revenue).
What Is Interest Income?
Interest income is the compensation a business receives for allowing another party to use its funds. Common sources include interest on bank account balances, interest on notes receivable, interest on bonds held as investments, and interest charged on loans made to employees, shareholders, or related parties.
In accrual-basis accounting, interest income is recognized as it accrues over time, regardless of when the cash is actually received. This follows the revenue recognition principle under both GAAP and IFRS. For most businesses, interest income appears in the "Other Income" or "Non-Operating Income" section of the income statement, below operating income.
Key Accounts Involved
When recording journal entries for interest income, you will typically work with the following accounts:
- Interest Receivable — An asset account representing interest that has been earned but not yet collected in cash.
- Interest Income (or Interest Revenue) — A revenue account credited when interest is earned. This flows to the income statement.
- Cash — Debited when interest payments are actually received.
- Notes Receivable — The underlying asset that generates the interest, if the interest-bearing instrument is a promissory note.
Core Journal Entry: Accruing Interest Income
When interest has been earned during a period but the cash has not yet been received, you accrue the income. The interest is calculated using the formula:
Interest = Principal × Annual Interest Rate × (Number of Days / 365)
Example 1: On December 1, 2026, ABC Corp holds a $50,000 note receivable from a customer at 6% annual interest. By December 31, 30 days of interest have accrued. The accrued interest is $50,000 × 6% × (30/365) = $246.58.
| Account | Debit | Credit |
| Interest Receivable | $246.58 | |
| Interest Income | $246.58 |
To record accrued interest income on the note receivable for December.
At this point, the interest has been earned but not received. Interest Receivable appears as a current asset on the balance sheet, and Interest Income increases net income on the income statement.
Recording Receipt of Interest Payment
When the interest payment is actually collected — for example, on the note's maturity date — you reverse the receivable and record the cash inflow:
Example 2: On January 31, 2027, ABC Corp receives the full 2 months of interest ($50,000 × 6% × 61/365 = $501.37). Of this, $246.58 was already accrued in December and the remaining $254.79 was earned in January.
| Account | Debit | Credit |
| Cash | $501.37 | |
| Interest Receivable | $246.58 | |
| Interest Income | $254.79 |
To record receipt of interest payment and reversal of accrued receivable.
Interest Income on Bank Deposits
Businesses often earn modest interest on checking and savings account balances. Bank interest is typically credited to the account automatically at month-end. The journal entry is straightforward:
Example 3: XYZ Consulting earns $34.50 in interest on its business savings account for the month of June 2026, credited directly by the bank.
| Account | Debit | Credit |
| Cash | $34.50 | |
| Interest Income | $34.50 |
To record interest earned on business savings account.
Since the bank deposits the interest directly, there is no need for an Interest Receivable account — Cash is debited immediately. You should always reconcile bank interest against the monthly bank statement to catch any discrepancies.
Interest Income on Bonds
When a business invests in bonds, interest is typically received semi-annually. Under accrual accounting, interest must be accrued between payment dates so that each period reflects the interest earned during that period.
Example 4: On October 1, 2026, DEF Manufacturing purchases a $100,000 corporate bond with a 5% coupon paid semi-annually on March 31 and September 30. At December 31, three months of interest have accrued: $100,000 × 5% × (3/12) = $1,250.
| Account | Debit | Credit |
| Interest Receivable | $1,250.00 | |
| Interest Income | $1,250.00 |
To accrue three months of bond interest at year-end.
When the semi-annual coupon is received on March 31, the entry debits Cash for $2,500, credits Interest Receivable for $1,250 (reversing the accrual), and credits Interest Income for the remaining $1,250 earned in the new year.
Interest Income vs. Interest Expense
It is important not to confuse interest income with interest expense. Interest income is a credit-side revenue entry representing money earned on assets. Interest expense, by contrast, is a debit-side cost representing the cost of borrowing. If your business both earns interest (on investments) and pays interest (on loans), these are recorded in separate accounts and presented separately on the income statement.
Tax Implications
Interest income is generally taxable in the year it is earned. For accrual-basis taxpayers, this means interest is included in taxable income when it accrues, even if the cash has not yet been received. There are limited exceptions — for example, interest on certain municipal bonds may be tax-exempt at the federal level. Consult with a tax professional or refer to tax planning strategies for guidance specific to your situation.
Common Mistakes to Avoid
- Recording interest only when cash is received — Under accrual accounting, this understates revenue in the period earned and overstates it in the period of receipt. Always accrue.
- Using the wrong interest calculation basis — Most commercial notes use a 365-day year (actual/365). Some use 360 days (30/360). Confirm the note's terms before computing accrued interest.
- Forgetting to reverse the receivable — When cash is received, remember to credit Interest Receivable for the previously accrued amount so your balance sheet doesn't carry a stale receivable.
- Misclassifying interest income as operating revenue — Interest income is almost always non-operating income unless your business is a financial institution. Present it below the operating income line.
Summary
Recording journal entries for interest income follows a consistent pattern: accrue the interest as it is earned (Debit Interest Receivable, Credit Interest Income), then record the cash receipt when payment arrives (Debit Cash, Credit Interest Receivable and Interest Income as applicable). Whether the interest comes from notes receivable, bonds, bank deposits, or related-party loans, the underlying accrual principle is the same: recognize revenue when earned, not when cash changes hands.
