Max MRR Calculator

Calculate your growth ceiling

Max MRR = New MRR ÷ Cancellation Rate. See exactly where your revenue will plateau.

Based on "Max MRR" by Jason Cohen, founder of WP Engine.

Monthly new MRR $1.0k/mo

$100$50k

Monthly cancellation rate 5.0%

0.5%15%

Projection period 60 months

1 year10 years

Max MRR
$20.0k

Max ARR

$240.0k

MRR at month 60

$19.5k

Months to 80%

Progress to ceiling 97.5%

Projected MRR

Max MRR ceiling

How it works

Every SaaS company has a revenue ceiling determined by two forces: new MRR (from new customers and upgrades) and cancellation rate (the percentage of existing MRR lost each month).

As MRR grows, the absolute dollars lost to churn increase—even if the rate stays constant. Eventually, churn dollars equal new dollars, and growth stops. That’s your Max MRR.

Max MRR = New MRR ÷ Cancel Rate

Halve your cancellation rate → double your ceiling. That’s why retention is the most powerful growth lever in SaaS.

◎

Know your ceiling

Your revenue will stop growing at a predictable point. This calculator shows you where.

★

Retention > acquisition

Cut churn in half and your ceiling doubles. Keeping customers matters more than finding new ones.

▲

Track it monthly

Max MRR updates as your inputs change — see if you're raising or lowering your ceiling over time.

◆