Payroll accounts for 60-80% of startup burn. The true cost of a U.S. employee is 1.25x-1.4x base salary after taxes, benefits, and overhead — a $140K engineer actually costs ~$187K/year.

Payroll is the single largest expense for most startups, typically accounting for 60 to 80% of total burn. One bad hiring decision or one poorly timed hiring spree can cut months off your runway. Yet most founders budget for payroll by looking at salary benchmarks and ignoring the other 25 to 40% of the true cost.

This guide covers how to accurately budget for payroll at every stage, including the hidden costs most founders miss, when to use contractors vs full-time hires, and a framework for knowing how many people you can afford.

The True Cost of a Hire

A $140K software engineer costs ~$187K/year fully loaded (1.34x multiplier), including payroll taxes (~10%), health insurance, 401(k), equipment, and workspace.

The salary you agree to in an offer letter is not what the hire will cost you. The fully loaded cost includes taxes, benefits, equipment, and overhead. For U.S.-based employees, the multiplier is typically 1.25x to 1.4x base salary.

Payroll Tax Obligations (2026)

Tax	Rate	Cap/Notes
Social Security (FICA, employer share)	6.2%	On first $184,500 of wages (2026 cap)
Medicare (employer share)	1.45%	No cap
Federal Unemployment (FUTA)	0.6%	On first $7,000 of wages
State Unemployment (SUTA)	1 to 6%	Varies by state, higher for new employers
Total Payroll Tax	~9 to 14%	Depends on state and salary level

For a $120K salary, payroll taxes alone add $11K to $17K.

Benefits Cost Benchmarks

Benefit	Typical Annual Cost Per Employee
Health insurance (employer share)	$7,000 to $15,000
Dental and vision	$600 to $1,500
401(k) match (3 to 6% of salary)	$3,600 to $7,200 (on $120K)
PTO (15 to 20 days, including holidays)	~$7,000 to $9,000 in implicit cost
Life and disability insurance	$500 to $1,500
Workers' compensation	$500 to $2,000

Health insurance is the biggest variable. According to the KFF 2025 Employer Health Benefits Survey, the average employer cost for health insurance was about $17,500 per employee in 2025. Mercer projects this will exceed $18,500 per employee in 2026 (a 6.7% increase). Startups often offer individual coverage initially and expand to family coverage as they grow.

Equipment and Workspace

Item	Typical Cost	Frequency
Laptop	$1,500 to $3,000	Every 3 to 4 years
Monitor, peripherals	$500 to $1,000	One-time
Software licenses	$1,200 to $3,600/year	Annual
Coworking or office space	$3,000 to $12,000/year	Monthly
Home office stipend (remote)	$1,000 to $2,000	One-time or annual

Putting It All Together

For a software engineer at a $140K base salary:

Component	Annual Cost
Base salary	$140,000
Payroll taxes (~10%)	$14,000
Health insurance	$10,000
401(k) match (4%)	$5,600
PTO cost (implicit)	$8,100
Equipment (amortized)	$2,000
Software licenses	$2,400
Workspace	$4,800
Fully loaded cost	$186,900
Multiplier	1.34x

That $140K engineer actually costs $187K, or about $15,575 per month. When you're running a burn rate analysis, this is the number you should use, not the base salary.

Use our true employee cost calculator to get exact numbers for your situation, factoring in your specific benefits, location, and overhead.

Contractor vs Full-Time: A Cost and Strategic Comparison

Contractors appear more expensive on an hourly basis but cheaper on a total cost basis because you don't pay benefits, taxes, or overhead.

Factor	Full-Time ($140K salary)	Contractor (equivalent)
Annual base compensation	$140,000	$165,000 to $185,000 (higher rate)
Payroll taxes	$14,000	$0 (contractor responsibility)
Benefits	$25,700	$0
Equipment and workspace	$9,200	$0 (typically)
Total annual cost	$188,900	$165,000 to $185,000

At face value, a contractor at $80 to $90/hour (roughly $165K to $185K annually at 40 hours/week) costs about the same or less than a full-time employee at $140K, once loaded costs are included.

But the calculation changes when you factor in:

Ramp-up time: Contractors are expected to be productive immediately. Employees may take 2 to 3 months to fully ramp.
Continuity: Contractors can leave at the end of their engagement. Employees provide continuity and institutional knowledge.
Management overhead: Contractors often need less management but also receive less context about company goals.
IP and confidentiality: Employees have clearer IP assignment. Contractor IP rights must be explicitly contracted.

When to Use Contractors

Short-term projects: A 3-month mobile app build, a website redesign, a data migration
Specialized skills: Security audit, tax compliance, a technology your team doesn't know
Demand spikes: Seasonal increases, launch crunch, one-time projects
Early validation: Testing whether a role is needed before committing to a full-time hire

When to Hire Full-Time

Core product development: Engineers building your primary product
Customer-facing roles: Sales, support, and success that require deep product knowledge
Long-term functions: Finance, operations, leadership roles that need continuity
IP-sensitive work: Anything involving core algorithms, proprietary data, or competitive advantages

Use our contractor vs employee calculator to model the exact cost difference for any role.

Stage-by-Stage Hiring Budget Framework

How much of your burn should go to payroll, and how many people can you afford? Here's a framework based on Carta's startup data and Kruze Consulting benchmarks for 2025.

Pre-Seed (2 to 4 People)

Budget Area	% of Burn	Notes
Payroll (founders + first hires)	70 to 85%	Mostly founders, maybe 1 to 2 contractors
Infrastructure and tools	10 to 15%	Essential SaaS tools, hosting
Everything else	5 to 15%	Legal, accounting, miscellaneous

At pre-seed, payroll essentially is your burn. Keep headcount as low as possible. Use contractors for non-core work. Target monthly burn of $10K to $25K if bootstrapped, $15K to $40K if funded.

Seed (5 to 12 People)

Budget Area	% of Burn	Notes
Payroll	65 to 80%	Core team: engineering, design, maybe first sales
Marketing and acquisition	5 to 15%	Content, early paid experiments
Infrastructure	5 to 10%	Growing tool stack, scaling hosting
Operations	5 to 10%	Legal, accounting, office

With a seed round of $2M to $4M, your target is 18 to 24 months of runway. At $60K to $100K monthly burn with a 10-person team, payroll is $45K to $80K of that.

The biggest mistake at seed: hiring a full sales team before product-market fit. Every hire at this stage should directly contribute to finding PMF.

Series A (15 to 35 People)

Budget Area	% of Burn	Notes
Payroll	60 to 75%	Engineering, sales, marketing, CS, ops
Sales and marketing	15 to 25%	Scaling go-to-market
Infrastructure	5 to 10%	Production-grade systems
Operations	5 to 10%	Finance, HR, legal

Series A typically brings $5M to $15M in funding. Monthly burn rises to $150K to $350K. With benchmark ARR of $2M to $5M at this stage, you're spending to scale what's already working.

At this stage, hiring velocity picks up. Plan for 3 to 5 new hires per quarter. Budget not just for salaries but for recruiting costs ($15K to $30K per hire for technical roles if using agencies) and the ramp period where new hires are consuming resources but not yet productive.

How to Budget for Your Next Hire

Before extending an offer, run this quick assessment:

1. Calculate the Monthly Cash Impact

Monthly cost = Fully loaded annual cost / 12

For a $130K salary at 1.35x multiplier: $175,500 / 12 = $14,625/month added to burn.

2. Model the Runway Impact

New runway = Cash Balance / (Current Monthly Burn + New Hire Cost)

If you have $1.2M in cash and burn $80K/month, your runway is 15 months. Adding a $14.6K/month hire drops it to 12.7 months. That's a 2.3-month runway reduction from a single hire.

3. Set a Revenue Trigger

Define the revenue milestone that justifies the hire. "We'll hire a second sales rep when MRR reaches $40K" is better than "we'll hire when it feels right."

4. Consider the Payback Period

How long until this hire generates enough value to cover their cost? For a salesperson, it might be a quota-to-OTE ratio. For an engineer, it might be the expected revenue impact of the features they'll build.

Common Payroll Budgeting Mistakes

Hiring Too Fast After a Raise

The dopamine hit of closing a funding round leads to hiring sprees. Companies that hire 30% of their eventual team in the first 3 months after a raise often regret it. Hire in stages. Prove the need for each role before filling it.

Ignoring Termination Costs

Firing someone isn't free. Severance (typically 2 to 4 weeks per year of employment), COBRA obligations, potential legal costs, and the productivity loss during the transition add up. Budget $10K to $30K per involuntary termination.

Not Budgeting for Raises

Your team expects annual raises. Budget 3 to 5% per year for cost-of-living increases and 5 to 15% for promotions. If you have 10 employees at an average salary of $120K, a 5% raise round costs $60K annually, or $5K/month added to burn.

Underestimating Recruiting Costs

Technical recruiting is expensive. Agency fees run 15 to 25% of first-year salary ($18K to $30K per hire at $120K). Even in-house recruiting requires job board fees ($300 to $500/month per listing), ATS software, and recruiter time.

Remote and Global Payroll Considerations

If you're hiring internationally, the cost equation changes significantly.

Employer of Record (EOR) Costs

Services like Deel and Remote charge $400 to $700 per employee per month to handle international payroll, compliance, and benefits. This is on top of the employee's salary.

Geographic Arbitrage

Salaries vary dramatically by location. A senior engineer who costs $180K in San Francisco might cost $80K to $120K in Eastern Europe, $60K to $100K in Latin America, or $40K to $80K in Southeast Asia. The savings are real but come with timezone, communication, and management challenges.

Tax Implications

Hiring in a new country can create a "permanent establishment" for tax purposes, potentially subjecting your company to local corporate taxes. Always consult a tax advisor before hiring internationally.

Track Your Payroll Spending

Payroll is too important to manage with spreadsheets and gut feel. culta.ai tracks your expenses by category, so you can see exactly how much of your burn goes to payroll versus marketing, infrastructure, and operations. Watch payroll as a percentage of revenue over time and benchmark against the stage-appropriate targets in this guide.

If you're running multiple entities, you can compare team costs across business lines to understand the efficiency of each operation. For guidance on when to make your first hire or how to structure co-founder compensation, we've got you covered.

Start free with culta.ai and get real-time visibility into your biggest expense. Use our employee cost calculator and contractor vs employee calculator to make data-driven hiring decisions.

Startup Payroll Budgeting: How to Plan Your Biggest Expense Without Running Out of Cash