Define the threshold first
Ramp is only measurable against a stated definition of full productivity. The strictest version is consistently achieving the quota of an established seller. A common practical version is reaching a defined proportion of that target for two consecutive periods, which avoids treating one lucky quarter as arrival.
Measure from the start date
The clock starts on day one, not on the first closed deal. Measuring from the first deal rewards a seller who inherited a nearly complete opportunity and penalises one who built a pipeline from nothing, which is the opposite of what the measure is for.
Respect the sales cycle floor
A seller cannot close a self-generated deal faster than the cycle allows. If the average cycle is four months, no amount of onboarding produces a self-sourced close before month four, and in practice the first weeks go on learning rather than prospecting. Ramp is therefore at least one cycle plus a learning period, and treating a shorter target as ambitious is treating arithmetic as attitude.
A worked example (illustrative figures)
Full quota for an established seller is ₹50,00,000 per quarter, and the threshold for being ramped is achieving that in two consecutive quarters. A seller starts in January. The average sales cycle in this segment is four months. They spend the first six weeks learning the product and the territory while making early calls, begin creating self-sourced opportunities from March, and those deals start closing from July. They reach full quota in the July to September quarter and again in October to December. Ramp time for this hire is roughly nine months from start date. Across four hires with ramps of eight, nine, eleven and ten months, the planning figure is 9.5 months, which is the number that should drive both hiring schedules and next year's capacity model.