What is Run Rate? (Definition + SaaS example)
Run rate is an annualized projection of future revenue based on current period performance. In SaaS, run rate is typically calculated by multiplying the most recent month's revenue by 12, providing a forward-looking estimate of annual revenue if current conditions remain unchanged.
Formula and Calculation
Run Rate (monthly)
Run Rate = Current Month Revenue × 12
Run Rate (quarterly)
Run Rate = Current Quarter Revenue × 4
For partial periods:
Run Rate (any period)
Run Rate = Period Revenue × (12 ÷ Months in Period)
Worked SaaS Example
A SaaS company just completed Q1 with the following revenue breakdown:
| Revenue Source | Q1 Amount | Monthly Avg | Annualized |
|---|---|---|---|
| Subscription MRR | $450,000 | $150,000 | $1,800,000 |
| Usage-based fees | $75,000 | $25,000 | $300,000 |
| Professional services | $30,000 | $10,000 | $120,000 |
| Total | $555,000 | $185,000 | $2,220,000 |
- Revenue run rate: $555,000 × 4 = $2,220,000
- ARR (recurring only): $150,000 × 12 = $1,800,000
The $420,000 gap between run rate and ARR represents non-recurring and variable revenue that may or may not persist.
Run Rate vs Actual Annual Revenue
| Metric | Value | Includes |
|---|---|---|
| Run Rate | $2,220,000 | All revenue annualized from most recent quarter |
| ARR | $1,800,000 | Only recurring subscription revenue |
| Last Year's Actual Revenue | $1,650,000 | Total revenue for the prior fiscal year |
Run rate is forward-looking, ARR is recurring-only, and actual revenue is backward-looking. All three serve different analytical purposes.
Why Run Rate Matters for SaaS
Finance teams use run rate as a quick shorthand for annualized revenue when a full year of data is not yet available. It is especially common at early-stage companies reporting to boards and investors — saying "we are at a $2M run rate" is more compelling than "we earned $170K last month."
In investor reporting, run rate frames the current momentum. During fundraising, founders use run rate to communicate traction: "$3M ARR run rate, growing 15% month-over-month" paints a growth picture that trailing twelve-month revenue cannot capture. Investors understand the limitations but use it as a directional signal.
A common mistake is treating run rate as a forecast. A company that closes a large enterprise deal in one quarter may report a significantly inflated run rate that does not reflect sustainable revenue. Always disclose whether the period included one-time or unusually large items.
Run rate connects to ARR as the recurring component of the broader run-rate figure. For pure-subscription SaaS companies with no services or usage fees, run rate and ARR are identical. For companies with mixed revenue, the gap between run rate and ARR reveals how much of the business is truly recurring, which directly impacts MRR reporting.
Track your revenue run rate in JustPaid
Frequently Asked Questions
ARR is specifically the annualized value of committed recurring subscriptions. Run rate is broader — it annualizes total revenue from the most recent period, including one-time fees, services, and usage-based charges. ARR is a subset of run rate for pure SaaS companies.
Related Terms
ARR (Annual Recurring Revenue)
Annual Recurring Revenue (ARR) is the annualized value of a SaaS company's committed recurring subscription revenue. ARR equals MRR multiplied by 12 and usually excludes one-time fees, services, and purely variable usage, making it a standard metric for investor reporting, valuation, and annual planning.
MRR (Monthly Recurring Revenue)
Monthly Recurring Revenue (MRR) is the predictable revenue a SaaS company earns each month from active subscriptions. MRR normalizes different billing periods — annual, quarterly, and monthly — into one consistent monthly figure, making it the foundational metric for SaaS financial planning.
