Guide
What is a retro planning (reverse schedule)?
Reverse scheduling starts from the deadline and works backwards to date every task — so you never miss the delivery date.
A retro planning — or reverse schedule — is a planning technique that starts from the project deadline and works backwards to the present, scheduling each task from the final delivery date rather than from the start.
Forward vs. reverse scheduling
Classic (forward) planning starts today and adds durations until it reaches an end date. Reverse scheduling does the opposite: it fixes the mandatory deadline first, then positions every task and milestone backwards, revealing the latest possible start date for the whole project.
When to use it
Reverse scheduling shines whenever the end date is non-negotiable — a trade show, a product launch, a regulatory filing, an event. It immediately shows whether the deadline is realistic and how much slack, or lateness, you already carry.
How to build one
List all tasks and deliverables; estimate each duration; map dependencies; place the final milestone on the deadline; then schedule each preceding task backwards, accounting for resource availability and non-working days. The first task’s start date tells you whether you must start today — or if you are already late.
Benefits
A shared deadline everyone commits to, early detection of unrealistic timelines, clearer prioritisation of the critical tasks, and a strong lever to negotiate scope or resources before work starts.
Retro planning in FoxPlan
FoxPlan’s interactive Gantt supports forward and backward scheduling with dependencies, milestones and baselines — so you can build a reverse schedule, spot the critical path and track progress against the committed deadline across the portfolio.
