Guide To Project Planning

How Much Buffer Time To Add To A Project Plan

PROJECT PLANNING

Tinna Lyngholm Thomsen

2/5/20251 min read

When planning a project it's important to add buffer time to your plan. This is needed because a lot of unforeseen things can happen during a project, and you need to have time in your calendar to handle that. So how much extra time is needed? Here's our advice 👇

How much buffer time to add to your project plan?

Expected project length:

<3 MONTHS
For a project lasting less than 3 months, add one week extra.

3 TO 6 MONTHS
For a project lasting 3 to 6 months, add one month extra.

>6 MONTHS
For a project lasting more than 6 months, add one month extra for every 6 months. Meaning a project estimated to last 6 months = a 7 months plan, 12 months = a 14 months plan etc.