Enter a start date and a processing duration into the calculator to estimate a future (target) filing date. (This does not determine an official “filing date,” which is set by when an authority actually receives/accepts a filing.)

Estimated Filing Date Calculator

Enter any 2 values to calculate the missing value (uses calendar days; does not adjust for weekends/holidays).

Related Calculators

Filing Date Formula

The following formula is used to estimate a future (target) filing date by adding a duration (in calendar days) to a start date.

FD = CD + PD

Variables:

  • FD is the estimated filing date (target date)
  • CD is the current date (start date)
  • PD is the processing duration (days)

To estimate the filing date, add the processing duration to the current date. The result is the expected/target date based on calendar-day addition and does not account for jurisdictional filing rules, cut-off times, weekends, or holidays.

What is a Filing Date?

A filing date is the specific date when a document (such as a legal form or application) is officially submitted and received by a relevant authority or agency. This date is important because it can determine timelines for further actions or deadlines related to the document. For example, in patent applications, the filing date helps establish priority and can affect the applicant’s rights. Note: the calculator above does not determine an official filing date; it estimates a target date by adding a number of calendar days to a start date.

How to Calculate an Estimated Filing Date?

The following steps outline how to estimate a filing date using the formula FD = CD + PD (calendar days).

  1. First, determine the current date (CD) as your start date.
  2. Next, determine the processing duration (PD) in days.
  3. Next, use the formula FD = CD + PD.
  4. Finally, calculate the estimated filing date (FD) by adding PD calendar days to CD.
  5. After inserting the variables 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.

current date (CD) = 2022-10-15

processing duration (PD) = 7 days

estimated filing date (FD) = 2022-10-22