How to Build a Headcount Plan for Your 2027 Budget (and Why Salary Times Heads Is Always Wrong)

The most common headcount plan we see is a list of names, a salary column, and a total. Multiply, sum, drop it into the budget. It's also the line most likely to be wrong by the end of Q1, and it's usually the biggest line in the budget.

For a services or software business in the $5M–$50M range, people are often 50% to 70% of operating expenses. Miss that line by 10% and you've missed EBITDA by more than any other assumption in the model. So it deserves more than a salary column.

What "fully loaded" actually means

One-line definition: fully loaded cost is everything the company pays to employ a person for a year, not just what shows up on their offer letter.

That includes base salary, bonus or commission, employer payroll taxes, health insurance, retirement match, workers' comp, and the smaller stuff like software seats and equipment. Most models capture the salary and add a flat 15% for "taxes and benefits." That's too low.

The Bureau of Labor Statistics reported that in June 2026, total employer compensation cost for full-time private industry workers averaged $54.00 per hour worked, of which wages and salaries were $36.97. Benefits made up 31.5% of total cost. Put another way, for every dollar of wages, the average employer spent about $1.46 in total.

Your number will be different. A company with a rich health plan and a 6% 401(k) match will run higher. A younger team on a high-deductible plan will run lower. But if your model is using 1.15x, you're probably understating people cost by a meaningful amount, and your board will find out in the March actuals.

The five columns every headcount plan needs

A plan that survives contact with reality is built one row per role, not one row per department. Here's what each row needs.

1. Role, department, and status

Existing employee, open requisition, or planned hire. Keep them visibly separate. Existing heads are close to certain. Planned hires are a bet, and the board should be able to see how much of the budget is riding on them.

2. Base salary and annual raise date

Don't apply a merit increase to everyone on January 1 unless that's actually when raises happen. If reviews happen in April, the increase affects nine months of the year, not twelve. On a $6M payroll with a 4% merit pool, that's a $60,000 difference.

3. Variable comp

Sales commission, bonus targets, and when they're paid. A bonus earned in 2026 but paid in March 2027 is a cash event in 2027 but an expense you should be accruing all through 2026. Your P&L and your cash forecast will disagree here, and they should.

4. Load factor, by component

Build the load from its parts rather than a single percentage. Employer FICA is 7.65% up to the Social Security wage base, then drops to 1.45%. Federal and state unemployment taxes hit early in the year and then stop once each employee crosses the wage base. That's why Q1 payroll tax is always higher than Q4, and a flat percentage hides it. Health insurance is a per-head dollar amount, not a percent of salary. A $45,000 coordinator and a $200,000 VP cost roughly the same to insure.

5. Start date and end date

This is the one that breaks budgets. A plan that says "hire 8 people in 2027" and spreads their full annual cost across the year overstates expense and then quietly gets bailed out by hiring delays. The model looks conservative, the actuals come in under, and everyone concludes the budget was fine. It wasn't. It was wrong in a direction nobody complained about.

A worked example

Say you're budgeting a new senior accountant at $90,000 base with a planned start date of April 1.

A salary-times-heads model books $90,000 for the year.

A properly built row books nine months of salary ($67,500), plus employer FICA at 7.65% ($5,164), plus health insurance at, say, $1,100 a month for nine months ($9,900), plus a 4% 401(k) match ($2,700), plus state and federal unemployment, workers' comp, and a laptop and software seats (call it $3,000 combined). Total 2027 cost: about $88,300.

Close to the naive number, right? Now look at 2028. That same person costs a full year: roughly $117,000 before any raise. That's 1.30x base, and the naive model never shows it. The run-rate impact of a hire is what matters to a PE sponsor, because they're valuing the business on exit EBITDA, not on this year's partial-year numbers.

Now add time-to-fill. If your recruiting history says a finance role takes 60 days to fill after the req opens, and the req opens April 1, the realistic start date is June 1. The honest plan shows the hire in June and flags the April assumption as upside risk.

Q&A: the questions boards actually ask

What's the difference between budgeted headcount and FTEs? Headcount counts people. FTEs count full-time equivalents, so two half-time employees are one FTE. Report both if you have part-timers, and budget cost off FTEs.

Should open roles be in the budget at 100%? Only if you're confident you'll fill them on schedule. Many teams apply a vacancy factor, typically a few percent of planned-hire cost, to reflect the reality that some roles slip. Show it as its own line so it's visible, not buried.

How often should the headcount plan be updated? Monthly, as part of the close. Actual heads by department against plan, with open reqs listed. It takes 20 minutes once the template exists, and it's the first thing an operating partner looks at when EBITDA misses.

Tie it to the rest of the model

A headcount plan that lives in a separate spreadsheet isn't a plan. It needs to feed the P&L by department, the cash forecast (with bonus and commission timing), and your KPI set. Revenue per employee and payroll as a percent of revenue are two of the ratios sponsors track most closely, and both depend on this file being right.

It should also connect to your revenue drivers. If the sales plan assumes 30% growth, somebody has to sell it and somebody has to deliver it. If the headcount plan adds two reps in Q3, the revenue from those reps shouldn't show up until they've ramped, which in most B2B businesses is two to three quarters later.

The best headcount plans read like a hiring story. Here's who we have, here's who we need, here's when they start, here's what they cost this year and next. If you can tell that story in one page to your board, the rest of the budget gets a lot easier to defend.

Plametrix builds and maintains headcount plans like this as part of its outsourced FP&A service for PE-backed and growing companies, tied into the monthly close, the budget, and the rolling forecast.