Most leaders love flexibility in their projects, until the board asks: “How long will it take and how much will it cost?”
Fixed Cost, Fixed Time works when certainty is not optional. Here’s when it becomes the right tool:
1. Predictability Over Drift
- Fixed dates → fixed budgets
- Clear scope → clear contract
- Works best when requirements won’t move
2. Discipline Over Chaos
- No room for ambiguity
- Forces upfront alignment
- Everyone knows exactly what “done” means
3. Control Over Creativity
- Perfect for compliance, migrations, integrations
- Upfront planning > mid-project reinvention
- Reduces surprises in regulated environments
4. Accountability Over Assumptions
- Success depends on monitoring quality, not rewriting scope
- Vendor owns execution
- You own acceptance
5. Efficiency Over Exploration
- Minimal back-and-forth
- Great for repeatable, well-understood work
- Predictable outcomes for predictable problems
Fixed Time, Fixed Cost shines when the problem is known, the scope is stable, and the business needs certainty. Use it when failure isn’t an option, and variation isn’t a luxury.