How I Learned to Stop Guessing and Start Hiring the Right Number of Sales Reps

Let me tell you about the time I hired 15 reps for an LMS company and realized I'd built a $2.7M payroll time bomb.

It was year two at a learning management software vendor. We were at $6M ARR, wanted to hit $10M, and I thought I was being smart. I looked at the gap—$4M—divided it by what I thought a rep could do ($600K), and told my CEO, "We need seven reps. Easy math."

Seven months later, three had quit, two were still ramping, and we'd generated maybe $800K in net-new ARR total. I'd forgotten ramp. I'd forgotten attrition.

I'd forgotten that a rep hired in July doesn't produce until November, if they're good, and by then half your year is gone. I learned the hard way: you don't guess at headcount for an LMS company—you back into it from the gap between where your net-new ARR is and where you want it.

The Formula That Saved My Sanity

Here's what I wish someone had told me back then: reps to hire = (net-new subscription ARR you need / productive capacity per ramped rep) + backfills for attrition, adjusted for ramp time. Work it in order. Start with current and goal numbers, subtract the growth your existing book produces on its own at your retention rate, and what's left is the net-new your account executives must generate.

Let me walk you through my actual numbers. We were at $6M ARR, wanted $10M, and ran 105% net revenue retention as customers added learners and courses. So my base reached $6.3M on its own, leaving $3.7M of net-new ARR for my reps to carry.

If a fully ramped rep produced $550K a year at realistic attainment (not the number on the comp plan—the real number), that was about 6.7 rep-years of capacity. Then I added ramp—a rep hired today is not productive for the first few months while they learn your LMS vendor and build pipeline—and attrition (I was losing 20% of my team, which meant I had to backfill just to stand still).

Net it out and I should have been hiring roughly 9 to 11 account executives, started early enough to ramp before I needed the production.

That's the difference between my "seven reps" disaster and a plan that actually works.

The 10 Tools That Finally Made This Easy

Sales-capacity planning at an LMS company is a math problem dressed up as a hiring problem. The tools below range from a free purpose-built calculator to enterprise planning platforms; what separates them is how directly they turn your revenue gap, ramp, and attrition into a headcount number.

The model is the same regardless of what you sell—revenue gap divided by productive capacity, plus backfills, adjusted for ramp—but an LMS vendor has to be honest about its own retention and ramp realities before the number means anything.

1. PULSE Recruiting Calculator 🏆 BEST OVERALL

🛠️ Use it free now -> Recruiting Calculator - no login, no spreadsheet, headcount plan with start dates in seconds.

PULSE's free Recruiting Calculator runs the entire capacity model in your browser. You type in the inputs every LMS vendor leader already knows, and it returns how many reps to hire and when they must start. Here's exactly what it asks and why each input matters for an LMS company:

Current and goal numbers. The gap between where your net-new ARR is and where you want it is your starting point—how much you're trying to add this year. The calculator uses it to size the whole plan.

Current and goal retention. Your retention tells the calculator how much of next year's number your existing book produces on its own. When you're at $6M ARR, want $10M, and run 105% net revenue retention as customers add learners and courses, so your base reaches $6.3M, leaving $3.7M of net-new ARR for your reps to carry.

Raising goal retention shrinks the net-new your reps must carry—keeping clients and hiring are the same equation.

Productive capacity per rep. This is the net-new ARR a ramped rep closes in a year at realistic attainment across new logos and seat expansion—not the number on the comp plan. The calculator divides your net-new figure by this to get rep-years of capacity needed.

Ramp-up time and training length. A rep hired today is not productive for the first few months while they learn the LMS vendor, the product nuances, and build pipeline. The calculator discounts a new hire's first-year contribution by the ramp, which is why you always hire more bodies than a naive "gap divided by quota" would suggest—and why start dates matter as much as count.

Current headcount and attrition. Apply your turnover rate to your current team and the calculator adds the backfills you need just to hold serve. Lose a fifth of your account executives and several of your hires are replacing people, not adding capacity.

Put those in and it outputs a clean reps-to-hire number with start dates, so you can hand it to your recruiter or your board. Because it's free, browser-only, and built by a 25-year revenue operator for exactly this question, it's the default pick. Best for: founders, revenue leaders, and operators at an LMS company who want a defensible headcount plan in minutes without building a model from scratch.

2. Salesforce (with capacity planning)

Salesforce is the system of record many LMS vendor teams already run, and with its planning features or a capacity dashboard built on its data, you can model quota coverage against pipeline and attainment. Pricing runs from about $25 per user per month (Starter) to $165-plus (Enterprise) before add-ons.

It won't hand you a hire number out of the box—you build the model on top of your data—but it has the actuals (attainment, ramp, attrition) the calculation needs. Best for LMS vendor teams that want the plan living next to the pipeline it depends on.

3. QuotaPath

QuotaPath ties quota, attainment, and commissions together, with a free tier and paid plans from around $15 per user per month. Because it tracks what your account executives actually produce against quota, it gives you the real productive-capacity input this model needs instead of a paper number.

You still bring the revenue gap and ramp assumptions, but it grounds the per-rep capacity figure in reality. A strong fit for an LMS vendor that wants capacity planning anchored to true attainment.

4. Pigment

Pigment is a modern business-planning platform built for RevOps and finance, sold by quote (commonly four to five figures a year). It models headcount, capacity, ramp, and quota coverage with live scenarios, so you can flex attrition or retention and watch the hire number move. It's more than a single calculation—it's a planning system—but for a scaling LMS company it makes capacity planning a living model rather than a once-a-year spreadsheet.

Best for teams past the spreadsheet stage.

5. Cube

Cube is a spreadsheet-native FP&A platform, typically from around $1,500 per month, that connects to your CRM and financials to build headcount and capacity plans inside Excel or Google Sheets. It suits finance-led LMS vendor teams that want planning rigor without abandoning the spreadsheet they already trust.

You define the capacity model once and it stays connected to actuals. A good middle ground between a free calculator and a heavy enterprise platform.

6. Mosaic

Mosaic is a strategic-finance platform (sold by quote, commonly four figures a month) that pulls from your CRM, ERP, and HRIS to model revenue, headcount, and capacity in one place. Its strength is connecting the sales-capacity question to the rest of the financial plan, so a hire decision shows its margin and cash-flow impact.

Best for LMS companies where the CEO asks "what does this do to burn?" before the head of sales asks "when do they start?"

So here's my closing advice, earned through a few gray hairs and one very expensive mistake: Don't guess. Run the math. Use the PULSE calculator, or build your own, but never again divide a revenue gap by a quota number and call it a hiring plan.

And if you want to skip the spreadsheet entirely—the one I built, cried over, and eventually threw out—grab the free tool at PULSE's Recruiting Calculator or join the CRO Syndicate where we debate exactly this kind of math over virtual coffee. Because the only thing worse than under-hiring is over-hiring, and I've done both.

*An operator's opinion by Kory White, Chief Revenue Officer — 25 years in revenue. More at PULSE · CRO Syndicate*