Most founders don’t decide to hire because a spreadsheet told them to. They decide because they’re exhausted, or because a customer complained about a slow response, or because someone on the team said “we need help” for the third week in a row. The feeling is real. The urgency is often real too. But feelings don’t tell you whether your business can actually support another salary for the next twelve months, and that’s the question that matters.
Quick answer: You’re ready to hire when five numbers line up: the fully loaded cost of the role, your revenue per employee, the size of the capacity gap you’re trying to close, the cash runway you’d have left after the hire, and a realistic break-even timeline. If even one of these is badly out of range, it’s worth pausing, not because hiring is risky in general, but because this specific hire, at this specific time might not be.
This isn’t a gut-check exercise. It’s a five-number checklist, and small and mid-sized business (SMB) owners who run through it before extending an offer tend to make hires that stick, grow into their cost, and strengthen the business instead of straining it.
Why “I Feel Busy” Isn’t a Hiring Signal
Busy is not a metric. Busy is a symptom, and symptoms have more than one possible cause. Sometimes the fix is a new hire. Sometimes it’s a process that’s broken, a tool nobody set up correctly, or a founder who hasn’t delegated a task in eighteen months because “it’s faster if I just do it myself.”
The danger of skipping straight from feeling to hiring is that payroll is one of the few costs in a business that’s genuinely difficult to reverse. You can cancel a software subscription in an afternoon. Letting someone go takes weeks of planning, carries real human cost, and can damage team morale and your reputation as an employer. That asymmetry is exactly why this decision deserves five numbers instead of one feeling.
The Five Numbers, at a Glance
| # | The number | What it tells you |
|---|---|---|
| 1 | Fully loaded cost of the hire | What this person actually costs you, not just their salary |
| 2 | Revenue per employee | Whether your business is generating enough per person to support another one |
| 3 | Capacity gap (unmet demand hours) | Whether there’s real, measurable work this person would fill |
| 4 | Cash runway after the hire | How many months you could sustain the business if revenue stalled |
| 5 | Break-even timeline | How long until the hire pays for itself |
1. The Fully Loaded Cost of the Hire
Founders routinely price a hire at their salary and stop there. That number is almost always low, sometimes by 25 to 40 percent, because a salary is only the base layer of what a new employee costs.
The fully loaded cost includes:
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- Base salary or hourly wage
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- Payroll taxes (employer-side Social Security, Medicare, unemployment insurance)
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- Benefits, if offered (health insurance, retirement matching, paid time off)
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- Software, tools, and equipment (laptop, licenses, a seat on every platform they’ll touch)
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- Recruiting and onboarding time, including the hours you and your team spend training someone who isn’t yet productive
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- Workspace costs, if applicable
A useful rule of thumb: take the salary you’re planning to offer and multiply it by 1.25 to 1.4 to estimate the true annual cost. A $60,000 salary is closer to $75,000 to $84,000 once everything else is accounted for. If your hiring budget is built around the salary line alone, you’re already underestimating what you’re signing up for, and that gap tends to surface exactly when cash is tightest, three or four months in, right after the excitement of the hire has worn off.
Where to find this number: your payroll provider or accountant can usually calculate your true burden rate. If you don’t have a fully loaded cost estimate before you post the job, get one before you post the job.
2. Revenue per Employee
Revenue per employee is one of the simplest and most underused numbers in small business finance. Take your trailing twelve months of revenue and divide it by your current headcount, including yourself.
This number does two things. First, it gives you a baseline. Second, and more importantly, it lets you model what happens after the hire. If your revenue per employee is $150,000 and you’re about to go from four people to five, you need to ask honestly: will this hire help generate enough incremental revenue to keep that ratio roughly intact, or will it dilute it?
There’s no universal “good” revenue-per-employee benchmark, because it varies enormously by industry. A service-based consultancy will look different from a product business with thin margins. What matters is the trend within your own business. If revenue per employee has been climbing as you’ve grown, that’s a green light. If it’s been flat or declining while headcount grows, a new hire won’t fix that pattern on its own, and it’s worth understanding why before adding another person to it.
A helpful gut-check: model your revenue per employee twelve months from now, assuming the new hire is fully ramped and productive but revenue grows at a conservative, not best-case, pace. If that projected number still looks healthy, you’re in reasonable territory.
3. The Capacity Gap: How Much Unmet Demand Actually Exists
This is the number that turns “I feel overwhelmed” into something you can act on with confidence. The capacity gap is the volume of real, revenue-generating or client-critical work that isn’t getting done, measured in hours, not vibes.
Ways to quantify it:
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- Track how many hours per week you or your team spend on tasks that a new hire could take over
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- Count how many client requests, projects, or leads are currently delayed, declined, or handled late because of a lack of hands
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- Look at overtime hours across the team over the last two or three months
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- Estimate how many hours of billable or revenue-producing work are being turned away or postponed
If the answer is “roughly 15 hours a week of work is sitting in a queue, unbilled, unstarted, or handled late,” that’s a specific, defensible reason to hire. If the answer is “I just feel stretched thin,” it’s worth spending two weeks tracking time before committing to a six-figure annual decision. Founders are often surprised to discover the bottleneck isn’t headcount at all. It’s a manual process eating six hours a week that automation or a better workflow could eliminate for a fraction of the cost of a new salary.
The capacity gap number also tells you what kind of hire you need. A backlog of specialized, high-skill work points toward a full-time role. A steady trickle of overflow work points toward a part-time hire, a contractor, or a fractional resource, all of which carry a much lighter fully loaded cost than a full-time employee.
4. Cash Runway After the Hire
This is the number that keeps founders up at night, and it should be calculated before the offer letter goes out, not after.
Take your current cash reserves and divide by your monthly burn rate (the amount your expenses exceed revenue, or if you’re profitable, look at how much cushion you have above break-even). Then rerun that calculation with the new hire’s fully loaded monthly cost added to your expenses.
The question isn’t “can I afford the first paycheck.” It’s “if revenue stayed completely flat, or dipped 15 percent, for the next six months, would I still have enough runway to operate comfortably with this person on payroll.” A common benchmark: aim to have at least three to six months of operating expenses in reserve after factoring in the new hire’s cost, more if your revenue is seasonal or concentrated in a small number of clients.
This is also where days sales outstanding (DSO), the average number of days it takes to collect payment after a sale, matters more than founders expect. A business with strong revenue but slow-paying clients can look cash-rich on paper and still struggle to cover payroll on time. If your DSO is high, or trending up, build extra cushion into your runway calculation before adding a fixed monthly cost like a new salary.
5. Break-Even Timeline: When Does This Hire Pay for Itself
The last number ties everything together. Based on the capacity gap this person will fill and the revenue or time-value that work represents, how many months until their fully loaded cost is offset by what they produce?
For a revenue-generating role, like sales or client delivery, this is fairly direct: estimate the additional revenue this person will help generate monthly, apply your gross margin, and compare that against their fully loaded monthly cost. For a support or operations role, the math is less direct but still calculable: what is the dollar value of the hours they’ll free up for you or your highest-value team members to spend on revenue-generating work instead?
A break-even timeline of three to six months is generally healthy for most SMB roles. Beyond nine to twelve months, the hire isn’t necessarily a bad idea, but it does mean you’re making a longer-term bet, and that bet needs to be backed by stronger cash runway (see number four) to absorb the gap.
Bringing the Five Numbers Together
None of these numbers works well in isolation. A strong capacity gap with weak cash runway is a recipe for a hire you’ll have to unwind within six months. A comfortable runway with no measurable capacity gap often means the real fix is a process problem, not a people problem. The five numbers are meant to be read together, as a system, the same way a doctor doesn’t diagnose from a single vital sign.
Here’s a simple way to apply them before your next hiring decision:
- Calculate the fully loaded cost of the role.
- Check whether your revenue per employee can absorb it.
- Quantify the capacity gap in actual hours, not impressions.
- Rerun your cash runway with the new cost included.
- Estimate the break-even timeline and compare it against your runway.
If all five point the same direction, the decision gets a lot less emotional and a lot more obvious. If they conflict, that friction is valuable information, not a reason to force the hire through anyway.
Where Founders Usually Go Wrong
The most common mistake isn’t hiring too early. It’s hiring based on the wrong signal entirely, most often founder exhaustion, and then backfilling a financial justification after the offer is already out. The second most common mistake is treating the salary as the full cost, which quietly erodes runway that founders thought they had.
The fix for both is the same: build the habit of running these five numbers before every hire, not just the first one. Growing businesses hire repeatedly, and each hire changes the math for the next one. Revenue per employee shifts. Runway shifts. The capacity gap that justified your last hire might already be closed. Treating this as a recurring financial exercise, rather than a one-time gut check, is what separates founders who scale their team sustainably from founders who hire reactively and spend the next year managing the fallout.
Frequently Asked Questions
Should I hire another employee?
Hire when five numbers line up in your favor: you know the true fully loaded cost of the role, your revenue per employee can support it, you have a measurable capacity gap of unmet work (not just a feeling of being busy), your cash runway after the hire stays healthy (generally three to six months of operating expenses in reserve), and the role has a realistic break-even timeline of three to six months. If most of these are unclear or unfavorable, it’s worth addressing the underlying process or workload issue first.
When should I hire another employee?
The right timing shows up as a sustained, measurable capacity gap, several consistent weeks of unmet demand, overtime, delayed client work, or turned-away revenue, combined with cash runway strong enough to absorb the new cost even if revenue doesn’t grow right away. If missed deadlines, slower response times, or overtime have been happening consistently for more than a month or two, that’s usually a sign the capacity gap has moved from worth watching to actively costing the business money. Hiring in reaction to a single busy month or founder burnout, without checking cash runway and break-even timeline first, is one of the most common causes of a hire that doesn’t work out.
What is the true cost of hiring another employee?
The true cost is rarely just the salary. A reliable estimate is the offered salary multiplied by 1.25 to 1.4, which accounts for employer-side payroll taxes, benefits, software and equipment, and onboarding time. A $60,000 salary typically carries a fully loaded annual cost closer to $75,000 to $84,000. Founders who budget for the hire based on salary alone are usually underestimating the real cost by a quarter or more.
How much revenue or cash reserve do I need before hiring?
There’s no fixed revenue threshold that applies across every business, since the right number depends more on margin and cash predictability than on top-line size. A more reliable test is whether the business can absorb the new hire’s fully loaded cost for three to six months from cash on hand, without assuming any revenue growth to cover it. Businesses with seasonal revenue, a small number of concentrated clients, or slow-paying customers (a high days sales outstanding) should lean toward the higher end of that range, since a single delayed payment or slow season could otherwise put payroll at risk.
Should I hire an employee or a contractor?
This comes down to how predictable and ongoing the work is. A contractor fits project-based, seasonal, or specialized work where you don’t need someone available week over week, and it avoids payroll taxes, benefits, and long-term commitment. An employee fits work that’s steady, recurring, and central enough to the business that you need consistent availability and deeper institutional knowledge. Many founders use contractors to validate that a role is real before converting it into a full-time position, which lowers the risk of the fully loaded cost described above.
What percentage of revenue should go toward payroll?
This varies significantly by industry, so treat any benchmark as directional rather than a rule. Service businesses with lean overhead often run payroll, including owner compensation, at somewhere between 15 and 30 percent of revenue, while labor-intensive businesses can run considerably higher. The trend matters more than the exact number: if payroll-to-revenue has been climbing for several quarters while revenue per employee stays flat, that’s a sign to slow down on hiring and investigate why, rather than a reason to hire your way out of it.
Should I hire full-time or part-time first?
If the capacity gap you’ve measured doesn’t add up to a full 30 to 40 hours a week of steady work, a part-time hire or a fractional resource is usually the lower-risk choice, since it carries a smaller fully loaded cost and is easier to scale up later. Full-time hires make more sense once the workload is consistent enough that a part-time schedule would leave real work unfinished every week. Starting part-time and increasing hours as demand grows is a common way to de-risk a first hire in a specific role.
Where Otterz Fits In
This is the kind of analysis we walk clients through as part of ongoing controller and CFO support: benchmarking revenue per employee, modeling cash runway against upcoming payroll decisions, and helping founders see the real, fully loaded picture before they commit. If you’re weighing a hire and want a second set of eyes on the numbers, it’s a conversation worth having before the job posting goes up.