A rolling forecast is an always-forward 12-month (or 18-month) financial forecast that refreshes monthly. Drop the closed month from the front, add a new month at the back, refresh assumptions for everything in between. The forward horizon never compresses. It's the standard upgrade from annual budgeting once you're scaling.
How it works
You're forecasting May 2026 through April 2027. May closes. On June 1 you produce the close, the variance commentary, and roll the forecast: drop May, add May 2027 at the back, refresh assumptions in between. Now you're forecasting June 2026 through May 2027. The full 12-month forward view is preserved.
Why rolling beats annual
- Forward visibility is constant. Never compresses to 1 or 2 months by year-end.
- Forecasting discipline is monthly, not annual.
- Reforecasts are built in, not crisis-triggered.
- Decision-making is anchored to fresh data, not 8-month-old assumptions.
A worked example
It's August. Under an annual budget, you have 4 months of forward visibility (through December). Under a rolling forecast, you have 12 months (through next August). When marketing pitches a Q1 launch campaign, rolling already has the cash and EBITDA impact modeled. The annual budget requires a special-case analysis.
The most common mistake
Skipping a refresh cycle. The rolling discipline only works if you actually roll it. Two skipped months and you're back to a stale forecast with 10 months of forward view. Better than annual, worse than the practice you committed to. Pick the cadence and stick to it.
Frequently Asked Questions
what's a rolling forecast in plain english?
Always-12-month forward view, refreshed every month.
why use a rolling forecast instead of just an annual budget?
Forward visibility never compresses, monthly discipline, reforecasts built in. Worth it above $20M ARR.
does a rolling forecast replace my annual budget?
No. Run both. Annual budget anchors the year. Rolling forecast tracks reality.
Related Terms
- What is a reforecast?
- Budget vs forecast vs actuals
- What is a driver-based forecast?
- What is 13-week cash flow?
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