MRR, ARR and revenue growth: a plain-English guide for founders

MRR is the monthly value of all active subscriptions, and ARR is that same figure multiplied by twelve. Revenue growth measures how fast either number changes over time. Most confusion comes from what gets counted, not from the math.

This guide walks through each term with simple examples, shows the mistakes that inflate figures, and explains how investors and buyers read them.

What MRR means

MRR stands for monthly recurring revenue. It counts only revenue that repeats on a schedule, normalized to a single month.

Stripe's support documentation, Understanding MRR and ARR, gives a clear example. An annual subscription of $1,200 contributes only $100 to MRR, because you divide it across twelve months.

So the basic recipe is:

1. List every subscription that is currently paying.
2. Convert each one to a monthly amount.
3. Add them up.

If you have 40 customers on a $29 monthly plan and 10 customers on a $290 yearly plan, your MRR is 40 x $29 plus 10 x ($290 / 12). That is $1,160 plus about $242, or roughly $1,402.

What ARR means

ARR is annual recurring revenue. In its simplest form it is MRR times twelve. In the example above, ARR is about $16,800.

ARR is a run rate. It says what you would earn over the next year if nothing changed, which is never exactly true. Customers cancel, others join and prices move. Still, it is a handy way to compare companies of different sizes on one scale.

Which one should you use? Early-stage products with monthly plans tend to talk in MRR. Companies with annual contracts or larger deals tend to talk in ARR. Neither is better, but you should never mix them without saying so.

What does not count

The most common way to inflate MRR is to include money that does not recur. Leave these out:

• One-time payments, such as setup fees or a lifetime deal.
• Usage overages above a committed base. A heavy month does not repeat on schedule, so multiplying it by twelve bakes in a spike.
• Services and consulting income, unless it is a fixed retainer.
• Free trials that have not converted.
• Refunded or disputed charges.

Lifetime deals deserve a special warning. They bring a burst of cash and no recurring line, so they can make a launch month look far better than the business really is.

Gross, net and new MRR

Once you track MRR monthly, you can break its movement into parts. This is more useful than a single total.

Component	What it captures
New MRR	Revenue from customers who just started
Expansion MRR	Upgrades and extra seats from existing customers
Contraction MRR	Downgrades from existing customers
Churned MRR	Revenue lost when customers cancel
Net new MRR	New plus expansion minus contraction minus churn

Net new MRR tells you whether the business is truly growing. A company can add many new customers and still shrink if churn and downgrades are larger. We look at that side in churn and retention.

How to calculate revenue growth

Growth is a percentage change between two points in time.

Month-over-month growth equals (this month's MRR minus last month's MRR) divided by last month's MRR. If MRR goes from $2,000 to $2,300, growth is 15 percent.

Year-over-year growth compares the same month one year apart. It smooths out seasonality and launch spikes, so investors often prefer it.

Compound monthly growth is what you get when a steady monthly rate repeats. Fifteen percent a month sounds like a modest number but compounds to more than five times in a year. It is rarely sustained for long, which is why headline growth rates fall as companies get bigger.

A useful rule of thumb is to always state the starting point. Growing from $500 to $2,000 in MRR is 300 percent growth and still a small business.

How investors and buyers read these numbers

People who evaluate startups look at a few patterns beyond the total.

• Growth consistency. Steady increases beat a single spike.
• Revenue mix. A product earning most of its MRR from one customer is fragile.
• Billing mix. Annual plans improve cash flow and often reduce churn. See our piece on monthly versus yearly plans.
• Net revenue retention. This shows whether existing customers spend more or less over time.
• Margin. For AI products, MRR with thin gross margin is worth less than MRR with healthy margin.

When you shop for a business, ask for numbers tied to a payment provider, not a spreadsheet. The Buy a startup marketplace uses revenue verified from the payment provider for this reason.

ARR versus bookings versus cash

Three terms often get mixed up.

• ARR is the annualized value of active recurring subscriptions.
• Bookings is the total value of contracts signed, including future years.
• Cash collected is what actually arrived in the bank, which may be higher in the month a customer pays annually upfront.

A two-year deal worth $24,000 adds $12,000 of ARR, not $24,000. The full amount is a bookings figure. Quoting bookings as ARR is one of the most common reasons a number looks bigger than it is.

Estimating MRR for companies you do not own

If you only have public information, you cannot know MRR exactly. You can still build a range.

Start from monthly visits, which you can see in the traffic checker. Multiply by an assumed share of visitors who become paying customers, then by the price of the lowest paid plan. StartupsIntel uses 3 percent paying visitors, split 80 percent monthly and 20 percent yearly, and labels the result as an estimate. The assumptions are listed on the methodology page.

Treat such estimates as a starting point. A sales-led product with few visitors and large contracts will look smaller than it is, and a free tool with huge traffic will look larger.

Common mistakes to avoid

• Counting annual payments as monthly revenue in the month they arrive.
• Reporting ARR from a single strong month.
• Including trials, pilots or unpaid invoices.
• Ignoring currency changes when customers pay in several currencies.
• Comparing your MRR to someone else's ARR.
• Forgetting that discounts reduce the price you should count.

A good habit is to keep one clearly written definition and use it every month. Consistency matters more than which convention you pick.

A small worked month

A concrete month makes the pieces easier to see. Suppose you start with $5,000 in MRR.

• Twelve new customers join at $30 a month, adding $360 of new MRR.
• Five existing customers upgrade by $20 each, adding $100 of expansion MRR.
• Two customers downgrade by $10 each, a contraction of $20.
• Six customers cancel at $30 each, churned MRR of $180.

Net new MRR is $360 plus $100 minus $20 minus $180, which is $260. Ending MRR is $5,260, so month-over-month growth is 5.2 percent. Notice that churn took half of what new sales added. Tracking only the total would hide that.

Keep a simple table like this each month and you will spot trouble early, long before it shows up in the headline number.

FAQ

What is the difference between MRR and ARR?

MRR is the normalized monthly value of active recurring subscriptions. ARR is the annualized version, usually MRR multiplied by twelve. They describe the same revenue at different time scales.

Should a startup report MRR or ARR?

Early products with monthly plans usually report MRR, while companies with annual contracts often report ARR. Pick the one that matches how customers pay and say clearly which you use.

Is a high growth rate always good?

Not necessarily. A large percentage from a tiny base can mean little, and fast growth with heavy churn or thin margins can be unhealthy. Always read growth alongside retention and gross margin.

Do lifetime deals count toward MRR?

No. A lifetime deal is a one-time payment, so it does not recur and should not be counted in MRR or ARR, even though it adds cash.