First of The Month Following 90 Days Calculator

This calculator helps you determine the first day of the month that occurs exactly 90 days after a given starting date. This is useful for scheduling payments, contracts, or any event that needs to occur on a specific day of the month after a fixed period.

What is the First of the Month Following 90 Days?

The "first of the month following 90 days" refers to the first calendar day of the month that occurs exactly 90 days after a specified starting date. This calculation is commonly used in financial contracts, lease agreements, and other time-sensitive documents where payments or events need to align with the first day of a month.

For example, if a contract starts on January 15, 2023, the first of the month following 90 days would be April 1, 2023, because 90 days after January 15 is April 14, and the first day of the following month is April 1.

Key Points

The calculation always rounds up to the first day of the next month after the 90-day period.
This method ensures that the date falls on the first day of a month, which is often required by legal or financial agreements.
The result is not simply 90 days after the starting date but the first day of the month that contains that date.

How to Calculate the First of the Month Following 90 Days

Calculating the first of the month following 90 days involves these steps:

Select or enter your starting date.
Add exactly 90 days to the starting date.
Identify the first day of the month that contains the date resulting from step 2.

Formula

Let D be the starting date. The first of the month following 90 days is calculated as:

First of Month = First day of the month containing (D + 90 days)

For example, if the starting date is March 10, 2023:

March 10 + 90 days = June 8, 2023
The first day of the month containing June 8 is June 1, 2023

Examples of Calculating the First of the Month Following 90 Days

Here are three examples to illustrate how the calculation works:

Example 1: Starting on January 1, 2023

January 1, 2023 + 90 days = March 31, 2023

First of the month following 90 days: April 1, 2023

Example 2: Starting on June 15, 2023

June 15, 2023 + 90 days = September 13, 2023

First of the month following 90 days: October 1, 2023

Example 3: Starting on December 20, 2023

December 20, 2023 + 90 days = March 18, 2024

First of the month following 90 days: April 1, 2024

Frequently Asked Questions

Why is the first of the month following 90 days important?: The first of the month following 90 days is important in financial and legal agreements because it provides a fixed, predictable date for payments or events. This ensures clarity and avoids ambiguity in contracts and lease agreements.
How does this differ from simply adding 90 days to a date?: Adding 90 days to a date gives you a specific calendar date, while the first of the month following 90 days gives you the first day of the month that contains that date. For example, 90 days after January 1 is March 31, but the first of the month following is April 1.
Can this calculation be used for leap years?: Yes, the calculation automatically accounts for leap years. For example, if the starting date is January 1, 2024 (a leap year), 90 days later would be March 31, 2024, and the first of the month following would be April 1, 2024.
Is this calculation used in specific industries?: Yes, this calculation is commonly used in finance for contract renewals, lease agreements, and payment schedules. It ensures that payments or events occur on the same day each month, simplifying accounting and scheduling.