Downsell Monthly Recurring Revenue
MRR lost when active customers contract their recurring spend by downgrading plans or dropping add-ons, while remaining paying customers.
◆ Currency
Formula
Built from
What it measures
The sum of all negative MRR deltas across customers who downgrade but keep paying. It isolates revenue lost to shrinkage on live accounts — not from customers leaving (that is churn), but from existing ones spending less than they did last month.
Why it matters
Downsells expose two truths: where your product isn't delivering enough value to hold a paid tier, and whether your team is protecting expansion. Boards read downsells as revenue leakage and CFOs track them as an outflow in the MRR waterfall. A cluster of downsells in one segment is often the first signal to rework positioning, packaging, or support for that tier — before those accounts churn outright.
How to read it
Downsell MRR is reported as a positive magnitude in the waterfall, then subtracted from MRR growth. Read it as a trend, not a snapshot: if downsells creep up while upsells stay flat, a retention problem is hiding inside your active base. Always segment by tier and cohort — a spike in mid-market downgrades demands a different fix than one in SMB. Pair it with Upsell MRR to see net expansion: healthy bases expand more than they contract.
What good looks like
Good
Downsell MRR stays a small fraction of starting MRR and is flat or shrinking as the base grows; expansion outpaces contraction.
Watch
Downsell MRR is rising, or concentrated in one tier or cohort — investigate which segment is trading down and why before it churns.
Bad
Downsell MRR is a large, growing share of the base; customers are systematically right-sizing down, signaling pricing or value misalignment.
Watch-outs
- Confusing downsell with churn. Downsell = the customer stays and pays less; churn = the customer leaves entirely (drops to $0). The formula counts contractions only while current MRR is above $0.
- Forgetting the $0 boundary. A customer who drops to $0 is churn, not downsell — counting them in both double-counts the loss.
- Ignoring the prior-period baseline. Anniversary renewals or promo expirations can create phantom downsells; always compare like-for-like contracts month over month.
- Misreading the sign. Downsells are stored as positive but subtracted in the waterfall — watch for reversals or restated amendments that hide the real contraction volume.
Worked example
Hypothetical
Three existing customers downgrade this month: Company A by $2K/month, Company B by $1K/month, and Company C by $3K/month — all still paying. Downsell MRR for the month is $6K.