Quota design: top-down vs bottom-up methodologies in UK SaaS

Quota design is the single most political exercise in a UK SaaS sales operation. Done well, it lines up the rep's incentive with the company's growth target and gives the field a number they can plan against. Done poorly, it produces sandbagging at the top, demotivation at the bottom, and a 12-month argument every January.

Two methodologies dominate UK SaaS practice in 2026: top-down and bottom-up. The strongest sales operations teams use both, reconcile the gap, and re-run the process every 12 months.

Top-down: from the company target

Start with the company's revenue target for the year. Subtract whatever's expected from existing customer expansion (renewals plus upsells). What remains is the new-business number the field needs to deliver.

Divide by the number of quota-carrying AEs you'll have in the year, weighted by their ramp status (a new AE in month two contributes maybe 20 percent of full quota; an AE in their second year contributes 100 percent). The result is the average new-business quota per fully-ramped AE.

Then apply two adjustments:

• Productivity assumption: not every AE will hit 100 percent. Top-down quota math should assume some attainment distribution, typically 60-80 percent average attainment with a long tail. If you set quotas that require 100 percent average attainment to land the company target, you will miss the company target.
• Coverage adjustment: divide the productivity-adjusted quota by your team's realised close rate from qualified pipeline. The result is the pipeline coverage requirement implicit in the quota. If that coverage requirement is meaningfully higher than your team has historically generated, the quota is structurally unrealistic.

Top-down is necessary because it ties the field's number to the company's number. It is insufficient because it ignores territory differences, AE differences, and bottom-up reality.

Bottom-up: from territory capacity

Look at each territory or each AE's account list. Estimate the realistic new-business potential of that book in the year, given:

• Account count and size distribution
• Historical pipeline generation from that book
• Stage of buyer-journey for the existing accounts (some are Year-1 cold; others have run a procurement evaluation already)
• AE-specific factors (ramp status, recent attainment, vacation, parental leave)

Sum the bottom-up estimates. The result is what the team thinks it can deliver if the territories are actually as represented.

Bottom-up is necessary because it surfaces structural problems (one territory is impossible; another is too easy; a third needs splitting). It is insufficient because field teams will systematically underestimate to set themselves up for over-attainment, and a quota built purely from bottom-up estimates will miss the company target.

The reconciliation

The gap between top-down and bottom-up is the conversation. If top-down says 600k pounds per AE and bottom-up says 450k pounds per AE on average, you have three honest options:

1. Accept the bottom-up number and revise the company target. This is the right answer when bottom-up is built carefully and the gap reveals genuine territory constraint.
2. Accept the top-down number and increase capacity (more AEs, more SDRs, better tooling, larger marketing investment). This is the right answer when the gap reveals capacity shortage rather than territory constraint.
3. Compromise on a middle number and adjust the comp plan to make the higher attainment unattractive economically. This is the wrong answer most of the time, because it produces a quota that nobody believes.

The reconciliation is where sales leadership earns its keep. The quota that emerges should be defensible from both directions.

Common UK SaaS quota patterns

Three common shapes in 2026 at 50-300 person scale:

• Mid-market AE, 100k pounds OTE, 60/40 split: 400-500k pounds annual new-business quota. Quota-to-OTE ratio of 4-5x.
• Enterprise AE, 150k pounds OTE, 60/40 split: 700k-1.2m pounds annual new-business quota. Quota-to-OTE ratio of 5-8x. Higher because enterprise deals are larger and slower.
• SMB AE / commercial AE, 75k pounds OTE, 50/50 split: 250-400k pounds annual new-business quota. Quota-to-OTE ratio of 3-5x. Lower because cycle is shorter and conversion is higher.

Quota-to-OTE ratios outside these bands deserve a closer look. Below 3x usually means the variable is too small to motivate or the role is more account management than new-business. Above 8x for non-enterprise is usually disguised stretch quota with structurally unattainable variable.

Two patterns that fail predictably

The 'stretch' quota that nobody believes. Set quota at the 90th percentile of plausible attainment, justified as 'aspirational'. The result: the field stops trying to hit it, the comp plan becomes a hygiene factor, and the company misses its number with no early warning because the field signal was 'we're behind' from week one and management filtered it out.

The annual rebase. Quota is set in January. By March, marketing pipeline is below target. The proposed fix: cut quotas mid-year. The result: the field learns that quota is negotiable if they sandbag early enough, and the next year's quota-setting becomes adversarial. Rebasing should be an exception with documented cause, not an annual ritual.

Operational ask

In your next quota-setting cycle, write the top-down and bottom-up numbers down separately before you reconcile. Document the assumptions behind each. When you choose a number, document the reconciliation. The next cycle will be meaningfully easier because last cycle's logic is on file.

This is editorial coverage of public sales-operations methodology. For specific advice on quota-setting at your company, consult your sales operations or finance lead.