Published: December 2025
Say “we’re at a $1M run rate” to an investor, and the first thing they’ll ask is: “…based on what?”
That’s the problem with the run rate. It’s simple to calculate, tempting to show, and incredibly easy to misinterpret. One strong month becomes a year-long projection, and suddenly your metrics look better on paper than they are in reality.
In this article, we’ll speak about what run rate actually means, how to calculate run rate correctly, how founders unintentionally misuse it, and how investors really see it.
Let’s dive in!
What is a run rate?
Run rate is a quick way to project your future revenue by extrapolating what you earned in a recent period and assuming that pace continues.
In other words, you take your latest revenue and extend it forward, as if nothing changed, and that’s it. No forecasting model. No complex math. Just a straight line drawn from today typically into the next 12 months.
Let’s have a look at an example:
If your startup made $20,000 in revenue last month, your annual run rate (often called “revenue run rate”) is:
$20,000 × 12 = $240,000
Run rate is quite popular with early-stage teams because it gives you a fast sense of “scale,” even when you have limited historical data.
However, there’s a catch: Run rate assumes the next 12 months will look exactly like the most recent period. And real businesses rarely behave that neatly.
So, when founders say “we’re at a $1M run rate,” investors usually translate it to:
“Okay… based on what period? How repeatable is that? Is this recurring? One-off? Seasonal? Lucky month? New launch spike?”
That’s why you always need to add context to your numbers, not just dropping them randomly into your pitch deck. Otherwise, investors may see these numbers as inflated or misleading.
Annual run rate vs. annual recurring revenue (ARR)
You’ve probably seen the acronym ARR thrown around in meetings or on LinkedIn. And confusingly, sometimes it means annual run rate, and sometimes annual recurring revenue.
Do they mean the same thing?
Actually, no, and here’s why.
Annual run rate:
Includes all revenue from the recent period (recurring + one-time)
Is simply period revenue × periods per year
Works for any business model
Can easily be skewed by promotions, seasonality, or one-off deals
Annual recurring revenue (ARR)
A SaaS-only metric
Represents recurring subscription revenue only
Excludes implementation fees, services, hardware, discounts, and one-time projects
Formula: ARR = MRR × 12
So yes, in SaaS, you may hear “ARR is the annualized version of MRR,” and that’s correct. But outside SaaS, “ARR” often means annual run rate, which is something entirely different.
To make the distinction more obvious:
If it’s recurring, call it ARR.
If it’s everything, call it a run rate.
Related read: Key SaaS metrics founders should track
The pros and cons of using a run rate
Revenue run rate isn’t a good or bad metric; it’s just a rough tool. And like any rough tool, it works in some situations and completely fails in others.
| When run rate is useful | When run rate breaks |
| You’re an early startup with only a few months of data | You’re calculating it off your best month ever |
| Your recent growth inflection says more than your last 12 months | You’re in a seasonal industry (tax season, holidays, tourism, Black Friday, etc.) |
| You need a simple internal benchmark for sales targets | Your revenue includes large one-off deals or depends heavily on discounts and promotions |
| You want a quick snapshot for planning or budgeting (and you stay conservative) | You haven’t accounted for churn, downgrades, or short-term promos |
How to calculate a run rate
As we’ve already mentioned, run rate is quite a straightforward metric with a simple formula:
Run rate = Revenue in period × Number of periods in a year
So, if your period is:
1 month → multiply by 12
1 quarter → multiply by 4
Any irregular period → use daily revenue
And remember that the output is always the same (an annual projection), but the input (the revenue period you base it on) can differ.
Before we enter different scenarios, let’s settle on a starting number, which we’re going to use across all scenarios, so it’s easy to compare how the run rate changes depending on the timeframe:
Imagine your startup made $40,000 in revenue in November 2025.
➡️ Monthly-based annual run rate
Run rate = $40,000 × 12 = $480,000
So, based on November 2025, your annual run rate would be $480k.
This is the most basic way to calculate run rate: take one month and annualize it.
➡️ Quarterly-based annual run rate
Some businesses just don’t behave on a steady monthly rhythm. B2B especially has weird timing: invoices land late, clients batch purchases, and sales cycles slip into the next month. In this case, you’d better base your run rate calculation on a quarter rather than a month.
So, we take Q3:
July 2025 → $25,000
August 2025 → $28,000
September 2025 → $30,000
Total Q3 revenue = 25k + 28k + 30k = $83,000
Quarterly-based annual run rate = $83,000 × 4 = $332,000
If your business has uneven months, the quarterly run rate is usually the better story to tell.
➡️ Run rate from irregular time periods
Sometimes your “month” isn’t quite a month, but 45 or 75 days. However, you can still calculate your revenue run rate; you just switch to daily revenue.
Run rate = (Revenue ÷ Days in period) × 365
Imagine your new pricing went live on September 17, and you only want to measure revenue under the new model. From September 17 to November 30 (75 days), you made $60,000.
Daily revenue = $60,000 ÷ 75 = $800/day
So, your daily-based annual run rate = $800 × 365 = $292,000
Given how simple it is to calculate, the revenue run rate is also very easy to misuse. That’s why you should never look at it in isolation (just like any other metric). Let’s look at a few hypothetical scenarios where founders often run into trouble when calculating their run rate.
📌 Scenario #1: Seasonal businesses
Imagine you run a tax-productivity tool, and April is always your big month. You make $40K, your best month of the entire year. And you decide to calculate your run rate based on April earnings:
$40,000 × 12 = $480,000 run rate.
On paper, you suddenly look like a half-million-dollar business. But if you step back for a second, you’ll see that your typical off-season month (August, for example) brings barely $8K. So, does April really represent your business? Not quite so. It represents a moment in your business. And as soon as investors spot strong seasonality, they mentally adjust the number down (way down).
📌 Scenario #2: One large enterprise contract
Now, you’re building a B2B tool. Most months, you bring in around $10K in recurring revenue. But then July arrives, and you land your first big enterprise customer, a $50K one-off implementation project.
Your financials now show:
$10K recurring
$50K single enterprise project—Total: $60K
And of course, the run rate explodes: $60,000 × 12 = $720,000.
Suddenly, you look “on track” to hit three-quarters of a million. Except you’re not. Because that $50K isn’t part of a repeatable pattern; it’s a milestone.
So, a more honest approach (and the one investors expect) here is to:
Calculate run rate from repeatable revenue only (the $10K)
Treat the $50K as a non-recurring win
📌 Scenario #3: A SaaS startup with churn
This time, you’re running a SaaS business with $20K MRR, early traction, paying customers, and stable onboarding. And you calculate your run rate:
$20,000 × 12 = $240,000
Except that last month your churn was 9%, and you barely replaced the revenue you lost.
Run rate assumes the next 12 months will look exactly like the most recent month. But churn doesn’t behave that way. If anything, churn compounds.
This is why SaaS investors barely look at run rate. They look at:
MRR stability
Net revenue retention
Expansion vs contraction
Cohort retention curves
Because a SaaS business with high churn will never see the run-rate revenue the formula projects, as the model literally collapses faster than the run rate grows.
So, yes, you’re at a $240K run rate on paper, but in practice, your revenue curve might be flat or even shrinking.
How founders misuse a run rate
Investors see the same run-rate mistakes over and over again. Here are some of the biggest ones:
Mistake #1: Using your best month ever as the baseline
Every startup has a “hero month.” For example, a big customer signs, a promo lands, or something just finally clicks. But turning that one month into an annual projection won’t work well for you and your business.
If your November was $40K but your normal months sit around $12–15K, you’re not “on a $480K run rate.” You just had a great November, and investors will spot this.
Mistake #2: Ignoring discounts or promotions
If you earned more money because of giving heavy discounts, that doesn’t count as true earning power. And your run rate shouldn’t reflect that discounted month as if it were sustainable.
Mistake #3: Treating one-off deals as recurring revenue
This is the classic trap. You close a $50K implementation project, and you plug that entire $50K into calculating your run rate. As a result, you get an inflated business model overnight.
Mistake #4: Talking about run rate without saying what period it’s based on
The fastest way to confuse investors is to say “we’re at a $1M run rate” without any context. They need to know what you annualized (last month, last quarter, or a promo-driven spike). Without that clarity, the number tells them nothing about how your business actually performs.
Mistake #5: Using run rate to justify hiring or big spending
This one can be dangerous. If you decide to scale your team only based on your run rate, you risk overspending and hiring ahead of real demand. Run rate isn’t a forecast; it’s more like a snapshot of what would happen if everything stayed the same (which almost never happens in a startup).
Related read: What’s the difference between a forecast and a projection
Wrap-up
Run rate is a useful metric that helps founders get a quick sense of momentum. However, it may also create misleading optimism if you ignore seasonality, one-offs, churn, or irregular patterns. Investors don’t just look at the number; they look at how you calculated it and whether it reflects something repeatable.
If you’re working on your pitch deck, preparing for a raise, or trying to build a solid financial model, we can help. At Waveup, we’ve assisted over 1,000 founders in raising funding and growing their businesses.
Contact us, and let’s discuss the details.
Or, if you prefer something flexible and on-demand, check out our subscription service Waves by Waveup.
FAQs
What is the revenue run rate?
Revenue run rate is a quick way to estimate what your business might earn over a full year based on your earnings in a recent period. You basically take what you made in a month or quarter and extend it forward as if the pace stays the same. But it’s not a forecast; run rate only works when the period you’re using actually reflects your normal, repeatable performance.
How do I calculate a run rate?
You calculate the run rate by taking your revenue from a recent period and multiplying it by the number of periods in a year. So, monthly revenue × 12, and quarterly revenue × 4. But if your timeframe is messy (say 45 or 75 days), you need to multiply the daily revenue by 365.