New York simple-interest worksheet
Rate9
Enter a constant USD principal, choose start and end dates, then select the general 9% rate, the qualified 2% consumer-debt rate, or a custom annual rate. Rate9 shows calendar days, per diem, simple interest and principal plus interest. You can copy or share the worksheet. The app has no account and does not save a worksheet history.
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Include the app name, iOS version, the figures you entered (use fictional figures if possible), and what you expected. Do not email confidential case information unless necessary.
Calculation scope
Rate9 excludes the start date and uses a fixed 365-day denominator. It cannot decide which rate, accrual period, judgment date, or court convention applies to your matter. Rate changes, payments and accrued balances need separate treatment. Confirm the law and your record; this is not legal advice or an official court tool.