What Is Run Rate?
Key Takeaways
- Run rate annualises a recent period's financial performance to estimate annual results.
- It is useful for fast-growing businesses where historical annual data is not representative.
- Run rate is a simplification — it does not account for seasonality or growth trends.
- Always disclose the period used when quoting a run rate figure.
What run rate means
Run rate is a financial metric that extrapolates a recent period of performance to estimate what full-year results would look like if current conditions continued unchanged. The most common version takes a single month's revenue and multiplies by 12, or takes a quarter's revenue and multiplies by 4. For a business that has grown significantly during the year, the run rate based on the most recent month gives a more representative picture of current scale than the actual year-to-date total, which includes earlier periods when the business was smaller.
When run rate is most useful
Run rate is particularly useful for early-stage or fast-growing SMEs. If your business launched eight months ago, you have no prior full year of data — but if you have three months of stable trading, an annualised run rate gives investors, lenders, and you a sense of scale. It is also used in acquisition analysis, SaaS metrics (annual recurring revenue is essentially a run rate of monthly recurring revenue), and internal planning when a business has recently restructured and past annual data is no longer relevant to current performance.
The limitations you must understand
Run rate is a projection, not a forecast. It assumes the period you are extrapolating is representative, which is often not true. A December revenue run rate for a retailer will dramatically overstate annual revenue. A month with an unusually large one-off contract will inflate the run rate beyond what is realistic. Seasonality, one-off events, and growth trends are all ignored. Always label a run rate as an estimate, disclose the period it is based on, and supplement it with a proper forecast that accounts for known future variations.
Run rate for cost planning
Run rate is equally applicable to costs. If you hired three new employees in October, your monthly payroll cost has increased — applying the new payroll run rate to estimate annual staff costs is more accurate than using the year-to-date average, which includes the months before those hires. Similarly, if you signed a new software contract in November, the annual run rate of your software costs should reflect the new monthly total, not the historical average. Run rate thinking applied to costs helps avoid under-budgeting for commitments you have already made.