Upsell Live ARR

What it measures

Upsell Live ARR annualizes the positive month-over-month change in MRR from customers who were already live in the prior month. It captures pure expansion within the currently billing base — the value your existing relationships generate through upgrades, add-ons, and seat growth — and excludes new logos, downgrades, churn, and any forward-dated bookings not yet billing. The "Live" qualifier restricts it to contracts active and invoicing today, and the ×12 lens turns a single month's expansion into a run-rate you can compare against annual targets.

Why it matters

Expansion revenue tells you whether your product creates enough value that live customers willingly spend more. It is the cheapest revenue you will ever book — you already own the relationship, the payment method is on file, and adoption is underway, so there is no new acquisition cost to recover. Restricting it to the live base keeps the number honest: it counts only expansion that is actually billing, not amendments signed for some future start date. Operators track Upsell Live ARR to prove to boards that the business isn't just adding logos but deepening the accounts it already serves. Strong live expansion is what pushes net revenue retention above 100%, the single trait investors prize most; weak expansion narrows the path to profitability even while total ARR grows.

How to read it

Read Upsell Live ARR as the annualized run-rate of your expansion engine within the active base, and always read it against its mirror image — Downsell Live ARR and Churned Live ARR. Expansion that comfortably outruns contraction is what lifts net revenue retention above 100%; if downgrades and churn are eating your upsell, your live base is shrinking even when top-line ARR looks flat. Benchmark it as a share of starting live ARR and as a slice of Net New Live ARR so you can see whether growth comes from the base or only from new logos. Above all, segment the source of expansion: upgrades driven by genuine value realization are durable, while expansion propped up by across-the-board price increases can mask weak retention.

What good looks like

Watch-outs

• Counting forward-dated upsells as live expansion. A customer signs an amendment for +$20K ARR effective next quarter — it does not belong in Upsell Live ARR until the higher MRR is actually billing. Only count upgrades where the increased recurring revenue is already live.
• Counting new logos as expansion. If a customer had zero MRR last month and positive MRR this month, that is New Live ARR, not upsell — the convention requires prior-month MRR greater than zero.
• Confusing MRR expansion with ACV. Upsell Live MRR is a normalized monthly amount; a customer signing a $12K-ARR add-on mid-year contributes $1K of Upsell Live MRR that month, which annualizes to $12K of Upsell Live ARR — not $12K of new ARR booked all at once.
• Ignoring the composition of expansion. Upgrades from genuine product need and expansion driven only by an across-the-board price increase look identical in the number — segment the story or you will mistake a pricing action for product-led growth.
• Letting a downsell offset an upsell. If a live customer goes from $10K to $12K then to $8K within the month, the month-end snapshot is a net downgrade, not an upsell — record max(current − prior, 0) per customer, and the contraction flows to Downsell Live ARR.

Worked example