Accrued Interest Calculator
Reviewed by Hamza Gujjar, Algorithm Architect & Software Developer
Last updated: July 27, 2026
Disclaimer: This calculator is provided for informational and educational purposes only and does not constitute financial, medical, legal, or other professional advice. Always consult a qualified professional before making decisions based on these results.
Recording interest before cash actually moves
Proper accrual-basis accounting requires recording interest as it is earned or incurred, not just when cash physically changes hands - accrued interest captures this gap at period-end.
Worked example
For $10,000 principal at a 5% annual rate, accrued over 90 days:
Accrued Interest = 10000 x (5/100) x (90/365) = 123.29
This journal entry matters for accurate period-end financial statements - without recording accrued interest, both interest income (or expense) and the corresponding receivable (or payable) would be understated until the interest is actually paid.