The three treatments, and which one holds up
| Treatment | Year 1 ARR on a $100K / $200K / $300K deal | Problem |
|---|---|---|
| Current period rate | $100,000 | None, this is the answer |
| Final year rate | $300,000 | Counts revenue the customer is not paying |
| Blended term average | $200,000 | Overstates year one, understates year three |
Blended ARR breaks retention math
Suppose you book the blended $200,000 in year one. In year two the customer pays $200,000 on schedule, exactly as contracted, and the retention report shows zero growth on an account that grew 100 percent. In year three they pay $300,000 and the report shows expansion the contract locked in two years earlier.
The distortion runs the other way at renewal. A customer whose ramp finished at $300,000 and who renews at $260,000 reads as $60,000 of expansion against blended ARR and as a $40,000 contraction against the rate they were actually paying. Only the second reading tells you something happened, which is why net revenue retention has to be measured against the rate in effect rather than against a term average.
Tag the step-ups so expansion means expansion
A contracted increase raises ARR on its effective date and lands in the expansion side of a monthly retention waterfall. ORM's waterfall runs beginning ARR through churned customer ARR, churned product ARR, product decrease ARR, new customer ARR, new product ARR, and increased product ARR to ending ARR. A contracted ramp step reads as increased product ARR unless it carries its own tag.
Tag it. Expansion driven by a customer choosing to buy more is a different signal from expansion the customer agreed to at signature, and a forecast that cannot separate the two will read contracted growth as sales performance.
Put the ramp schedule in the plan
Every contracted step-up has a known amount and a known effective date, which makes it the most predictable ARR growth on the books. Build the schedule, load it into the annual plan as a known increase, and net out the accounts most likely to renegotiate before the step lands. Ramp step-ups are also where discount pressure resurfaces, because a customer facing a scheduled increase in a tight budget year has an obvious reason to reopen the contract early.
Frequently Asked Questions
Should you use the final-year rate as ARR?
No. That counts revenue the customer has not started paying and will not pay for another year or two. It inflates the current recurring base and pulls forward growth that belongs to a future period.
Is blended ARR ever acceptable on a ramp deal?
Blended ARR is the standard input for ACV on a multi-year contract, since ACV is defined as an average across the term. It is a poor input for ARR, which is meant to describe the recurring rate today.
Do contracted step-ups count as expansion?
They increase ARR, so they land in the expansion side of the waterfall unless you tag them. Tag them as contracted ramp so the expansion line reflects what the customer chose to buy rather than what they already signed for.
How do you forecast ARR from a book of ramp deals?
Build a schedule of every contracted step-up by effective date and add it to the ARR forecast as a known increase. It is the most predictable growth on the books, which makes leaving it out of the plan an avoidable miss.
Put these metrics to work
ORM builds custom revenue forecast models that turn concepts like how do you calculate arr for a ramp deal? into prescriptive action for your team.
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