Why are project deadlines and estimates always wrong?
Standard estimation methods like story points and three-point estimation fail to account for the hidden complexities that stretch development far past initial projections. This constant underestimation makes it impossible to plan reliable delivery dates, leading teams to miss about half of their targets.
What the numbers show
Counted from the threads quoted below. How we count
- The most recent one is from October 2026.
- This comes up 108.7× more often in r/CRM than across the site as a whole.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Stopping the team from treating estimates as commitmentsDid this help you?
- 2Tracking where time actually goes and adjusting for meetings and adminDid this help you?
- 3Blocking calendar time for planned workDid this help you?
- 4Using statistical forecasting approaches and reforecasting continuallyDid this help you?
- 5Adding contingency and buffers to estimatesDid this help you?
- 6Breaking down large items and eliminating unknowns earlyDid this help you?
- 7Customizing an existing platform instead of building from scratchDid this help you?
- 8Attempting to handle tasks in the evenings and weekendsDid this help you?
- 9Relying on junior-to-mid level experience to solve edge casesDid this help you?
- 10Handling parts of the project independently to save money or trying to manage contractors directlyDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“I tried story points, three-point estimation, and whatnot. None of it has made our deadlines more accurate. We still miss roughly half of them.”source ↗
“160 hours later, you will realise that NOBODY will buy your so-called CRM”source ↗
“I built one for a small law firm I was helping out, took about 3 months for something usable. The hardest part was making it actually fit the workflow instead just being a fancy spreadsheet.”source ↗
“My project has stretched from 1.5 weeks planned, to 5 weeks... And I don't have a bill yet.”source ↗
Where this came up
People with this problem also raised
- 2How to tell management a deadline is impossible
- 4Why is month-end close so rushed with a skeleton crew?
- 6Why does management give us arbitrary deadlines without explaining why?
- 3Budget projection was way off— how should I move forward?
- 4Do I have to sign a roofing estimate that's missing details?
- 5How to handle students asking for deadline extensions