Annual Run Rate

Annual run rate takes your revenue from a shorter period and extrapolates it to a full year. Had $85,000 in revenue last month? Your annual run rate is $1,020,000. It's a quick way to express your current revenue momentum in annual terms, and it's the number that often comes up first in board meetings and investor conversations.

How to calculate annual run rate

Annual Run Rate = Monthly Revenue × 12

You can also calculate it from a quarter: Quarterly Revenue × 4. The monthly version is more common in SaaS because it gives you a more current picture. Using a quarter smooths out month-to-month variation, which can be useful if your revenue is lumpy.

Either way, the calculation assumes the period you're measuring repeats identically for the rest of the year. That's a big assumption, and it's where founders get tripped up.

Annual run rate vs ARR

ARR (Annual Recurring Revenue) is specifically the annualised value of your recurring subscription revenue. Annual run rate can include everything: recurring subscriptions, one-time fees, consulting revenue, professional services. That's the key distinction.

If you had a large one-time implementation fee or a consulting project last month, your annual run rate will be higher than your ARR. For pure SaaS businesses with no one-time revenue, the two numbers are the same. But for most businesses at scale, they diverge. When someone asks for your run rate, make sure you're clear about which number you're quoting.

MRR × 12 gives you ARR. Total monthly revenue × 12 gives you annual run rate. Both are useful, but they answer different questions.

Limitations of annual run rate

Annual run rate assumes no seasonality, no churn, and no growth. That's rarely true. A strong December doesn't mean every month will match it. A quiet August doesn't mean the year is lost.

It's also dangerous to rely on run rate in isolation. We've seen businesses quote a $1 million run rate while revenue churn was eating 8% of their base every month. Pair your run rate with net new MRR trends to understand whether the trajectory is real or just a snapshot of a good month. Baremetrics and ChurnWard both surface these metrics side by side so you can see the full picture.

Used correctly, annual run rate is a handy shorthand for communicating scale. Just don't mistake a projection for a forecast.