Closing ARR
The annualized value of all active recurring subscriptions as of the last day of a period — the ending balance of your ARR waterfall, carried forward as next period's Starting ARR.
◆ Currency
Formula
Built from
What it measures
The sum of every active recurring subscription's normalized monthly value, multiplied by 12, evaluated on the final day of a reporting period. Each contract's recurring rate is its Total Contract Value divided by contract term in months; the company total is the sum across all live contracts as of period end, then annualized. One-time setup fees, professional services, and usage overages are excluded — only contracted revenue you can reliably expect to repeat each year.
Why it matters
Closing ARR is the period-end balance every other ARR movement reconciles to. You report it to know where the recurring business actually landed this month and to set the opening base for next month, since this period's Closing ARR becomes next period's Starting ARR. Finance uses it as the denominator for growth rates and the anchor for the ARR bridge; operations uses it to size quotas and spend against a known base; investors use it because it normalizes the subscription business to an annual scale, comparing cleanly across contract lengths and billing cadences.
How to read it
Read Closing ARR as the ending snapshot of your annual run-rate, not as a forecast. Compare it to the period's Starting ARR to read the motion — opened at $1.2M, closed at $1.332M means +11% for the month — and to plan and prior year to read trajectory. A rising Closing ARR means new and expansion ARR outran downgrades and churn; flat or falling Closing ARR means the leaks are winning, and the total can hide that if fresh bookings are masking heavy churn underneath. Always decompose the move into its components (new, upsell, downsell, churn) to see *why* it changed, and pair it with net revenue retention and customer churn: two companies with identical Closing ARR can have very different health — one expanding with churn under 5%, the other replacing lost logos with a few pricier accounts.
What good looks like
Good
Closing ARR rises every month, driven by new customer acquisition and expansion outpacing downgrades and churn, with net revenue retention above 100%.
Watch
Closing ARR growth is slowing or flat, or it depends on a handful of large accounts or one-time price increases rather than broad new-and-expansion momentum.
Bad
Closing ARR is flat or declining; churn and downgrades are outpacing new and upsell ARR.
Watch-outs
- Forgetting to annualize. If you normalize a contract by dividing TCV by term in months but stop before multiplying by 12, you've reported MRR as ARR and understated Closing ARR by 12×. ARR = MRR × 12, always.
- Including non-recurring revenue. Setup fees, implementation and professional services, usage overages, and one-time price hikes don't recur — folding them into Closing ARR inflates the run-rate and breaks comparability against the next period.
- Backdating or double-counting mid-period changes. If a customer upgrades mid-month, record only the incremental ARR from the effective date forward, not a full month of both old and new rates; if a contract renews mid-period, don't count it twice.
- Letting Closing ARR drift from next period's Starting ARR. The period-end figure must carry forward unchanged; if it doesn't match the next month's opening balance, the waterfall no longer reconciles.
- Reading the total without its quality. $1M of Closing ARR concentrated in 3 customers is far riskier than $1M across 300 — always pair it with logo count, concentration, and net revenue retention.
Worked example
Hypothetical
Open January at $100K ARR (Starting ARR). You sign $12K of new annualized contracts, existing customers upgrade by $4K, one downgrades by $2K, and you lose $3K to churn. Closing ARR for January is $111K, which becomes February's Starting ARR. In February you add $5K new and lose $1K to churn with no expansion, so February closes at $115K.