Enter the date of posting and the number of days for service into the calculator to determine the date of deemed service. This calculator performs simple calendar-day addition/subtraction and does not account for jurisdiction-specific rules such as business-day counting, excluding the posting day, or skipping weekends/public holidays.

Date Of Deemed Service Calculator

Note: This tool assumes deemed service occurs N calendar days after the posting date (posting date treated as day 0). Check your applicable court/agency rules for the correct method.

Enter any 2 values to calculate the missing value

Date of Deemed Service Formula

The following formula is used by this calculator in the simple case where the applicable rule defines deemed service as occurring N calendar days after the date of posting.

D_s = D_p + N

Variables:

  • Ds is the date of deemed service
  • Dp is the date of posting
  • N is the number of calendar days after posting (posting date treated as day 0)

To calculate the date of deemed service under this calendar-day assumption, add the number of days for service to the date of posting.

What is the Date of Deemed Service?

The date of deemed service is the date on which a document is considered to have been served under the applicable rules, even if it was not actually received by the recipient on that date. This concept is often used in legal and administrative contexts to ensure that there is a clear and enforceable timeline for the delivery and receipt of important documents. The method of calculating a deemed service date can vary by jurisdiction and service method (for example, it may use business days and exclude weekends/holidays), so always check the specific rule that applies to your situation.

How to Calculate Date of Deemed Service?

The following steps outline how to calculate the Date of Deemed Service using the calculator’s calendar-day method.

  1. First, determine the date of posting (Dp).
  2. Next, determine the number of days for service (N) specified by the applicable rule (calendar days for this calculator).
  3. Finally, calculate the date of deemed service using the formula Ds = Dp + N.
  4. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Date of Posting (Dp) = 2023-10-01

Number of Days for Service (N) = 5

Using this calculator’s assumption (calendar days, posting date treated as day 0): Ds = 2023-10-01 + 5 days = 2023-10-06.