The maturity date calculator provided by Hesapstan is designed to calculate the maturity (due) date of a financial instrument — such as a loan, deposit, promissory note, bond, or invoice — by adding a term you enter to its start (issue) date.
What is a maturity date?
A maturity date is the date on which a financial obligation (debt, note, deposit, invoice, etc.) must be paid or comes to an end. In commercial practice, phrases like "a 90-day note" or "a 32-day deposit" mean the maturity date is reached that many days after the issue date.
This tool adds the term you select (days, months, or years) to the start date you enter, and calculates the maturity date, the number of days remaining until it, and the total term length in days.
How are month- and year-based terms calculated?
For terms entered in months or years, the day number of the start date is preserved (e.g. January 15 + 2 months = March 15). If the target month does not have that many days (e.g. January 31 + 1 month), the day is reduced to the last day of that month (February 28 or 29).
What does this tool not calculate?
- It does not calculate the amount-weighted average maturity of multiple payments; use Hesapstan's average maturity calculator for that.
- It does not calculate the interest a deposit will earn; use Hesapstan's fixed deposit interest calculator for that.
- It does not produce an official document, contract, or registry record; it performs calendar calculation only.
Frequently Asked Questions
How is the maturity date calculated?
The term you enter (in days, months, or years) is added to the start (issue) date.
What happens if the day number doesn't exist in a month-based term?
For example, adding 1 month to January 31 lands on a month without a 31st day, so the result is calculated as the last day of that month (February 28 or 29).
Does this tool calculate the average maturity of multiple payments?
No. This tool calculates for a single start date and a single term. For the amount-weighted average maturity of multiple payments, use Hesapstan's average maturity calculator.
What does a negative "days remaining" mean?
It means the calculated maturity date is before today — in other words, the maturity has already passed.