Mortgage interest that has accumulated for a period but has not yet been paid.
Accrued mortgage interest is interest that has accumulated on the outstanding loan balance for a period but has not yet been paid. It is separate from principal and can make a date-specific payoff higher than the principal balance shown on a statement.
Interest accrues as time passes, while mortgage payments occur on scheduled dates. That timing creates periods when interest has been earned under the loan but has not yet been covered by a payment.
The distinction becomes important at payoff, refinance, closing, delinquency review, and servicing transfers. A borrower who sees a $250,000 principal balance should not assume that $250,000 will satisfy the loan on a future date. Interest may continue to accrue until the payoff is received and processed under the loan’s rules.
Accrued interest also helps explain why a regular mortgage payment commonly covers interest for an earlier accrual period before reducing principal under the payment schedule.
| Document or event | What accrued interest explains |
|---|---|
| Payoff statement | Interest included through the good-through date |
| Refinance payoff | Difference between principal balance and old-loan payoff |
| Closing figures | Interest for an opening or ending partial period |
| Periodic statement | Interest charged and paid during the statement period |
| Delinquency accounting | Interest and other amounts that remain unpaid |
The specific treatment depends on the note, payment history, applicable dates, and servicing records.
For a stable balance and daily amount, a simplified estimate is:
$$ \text{Accrued interest} = \text{daily interest} \times \text{applicable days} $$
If daily interest is approximately $49.32 and 12 applicable days have elapsed:
$$ $49.32 \times 12 = $591.84 $$
This is only an estimate. Principal changes, day-count conventions, payment application, cutoff timing, and rounding can change the servicer’s figure.
A payoff statement generally starts with unpaid principal and then accounts for interest through a stated date, along with any other charges, advances, or credits. The result is a payoff amount, not a new principal balance.
If payoff occurs after the good-through date, the borrower or closing agent may need a revised statement or may use per diem instructions supplied by the servicer. Sending only the quoted amount after it expires can leave a small unpaid balance.
A borrower refinances a mortgage with a principal balance of $250,000. The payoff statement is higher because it includes interest accrued since the last covered period through the anticipated funding date.
The new lender or closing agent uses the date-specific payoff rather than the principal balance. If funding moves by several days, the old-loan interest is recalculated so the lien can be satisfied fully.
Accrued mortgage interest differs from Daily Mortgage Interest because the daily amount is a one-day unit. Accrued interest is the total for the applicable period.
It differs from Interest Payment because accrued interest is what has built up; an interest payment is the portion of a payment used to cover that cost.
It differs from Prepaid Interest because prepaid interest is collected at closing for a defined opening period. Accrued interest is the broader concept of interest accumulated but not yet paid.
It also differs from capitalized interest. Accrued interest does not automatically become principal; capitalization requires a contractual or workout event that adds unpaid interest to the balance.