Most executives ask the wrong question when they consider hiring an executive assistant. They ask, "Can I afford an EA?" The better question is, "How much is it costing me not to have one?" Research from McKinsey suggests a skilled EA can reclaim up to 20% of an executive's time each week. For a founder billing at $200 per hour, that's a significant number. Here's how to run the math for your situation.
What Does an Executive Assistant Actually Cost?
Before you can calculate ROI, you need a clear picture of the cost. Executive assistant costs vary widely depending on the type of support you hire.
- US-based, full-time EA: $55,000 to $95,000 per year in salary, plus benefits (add 20-30% for total compensation)
- Virtual EA through an agency: $2,000 to $5,000 per month for part-time to full-time support
- Offshore EA: $800 to $2,500 per month depending on skill level and location
- AI executive assistant: $50 to $200 per month for tools like River Executive Assistant
The cost range is enormous. But so is the potential value, and that's where most people stop doing the math. They see the price tag and flinch without calculating what they get back.
How Do You Calculate Your Effective Hourly Rate?
The ROI calculation starts with your time. If you're a founder or executive, your time has a real dollar value, even if you're not billing hourly. A simple way to estimate it: divide your annual revenue or salary by 2,000 working hours per year.
A founder whose company generates $500,000 in revenue is working at roughly $250 per hour in terms of the value they create. A VP of Sales earning $180,000 is working at about $90 per hour. These numbers aren't perfect, but they give you a baseline for the calculation.
Now think about how much of your week goes to tasks an EA could handle. Harvard Business Review research found that executives spend an average of 41% of their time on tasks that could be delegated. Scheduling, email triage, travel booking, document prep, vendor coordination. These tasks matter, but they don't require your specific expertise.
The Simple ROI Formula
Here's the framework. It's not complicated, but most people never actually sit down and run it.
Start with your hourly rate and estimate how many hours per week an EA would free up. Research from Oceans Talent, based on 600+ company engagements, puts the typical time reclaimed at 2 to 4 hours per day for executives who delegate effectively. Even if you're conservative and assume just 1 hour per day, that's 5 hours per week.
Run the numbers:
- Your hourly rate: $150
- Hours reclaimed per week: 5
- Value reclaimed per week: $750
- Value reclaimed per month: $3,000
- EA cost per month (virtual): $2,500
- Net monthly gain: $500 (and growing as you delegate more)
At a higher hourly rate or with more hours reclaimed, the math shifts dramatically in your favor. A founder at $250 per hour reclaiming 2 hours per day generates $10,000 in recovered capacity each month. That's not a cost center. That's a lever.
What the Math Doesn't Capture
The ROI formula above only counts time. It doesn't count the quality improvement that comes from doing fewer things at once. When you're not switching between strategic decisions and scheduling conflicts, your thinking gets sharper. You make better calls on the things that matter most.
River Executive Assistant users report something similar. When inbox management and relationship tracking happen in the background automatically, the mental overhead of keeping everything in your head drops significantly. That's harder to put a dollar figure on, but it's real.
There's also the compounding effect. An EA doesn't just save you time this week. They build systems, learn your preferences, and get faster over time. The ROI improves the longer the relationship continues. A human EA takes three to six months to reach full effectiveness. An AI assistant like River gets more useful as it learns your context and priorities.
When the ROI Doesn't Work Out
The calculation breaks down in a few specific situations. If you're spending less than 5 hours per week on delegatable tasks, the math is tight. If you're not willing to actually let go of tasks and trust someone else to handle them, you'll pay for an EA and still do the work yourself. And if you hire for the wrong type of support, you'll get capability you don't use.
The honest answer is that an EA is worth it for most founders and executives who are genuinely time-constrained. The question isn't whether the ROI is there. It usually is. The question is whether you're ready to delegate, and whether you're choosing the right type of support for where you are right now.
If you're not ready to hire a full-time EA, start with River Executive Assistant. It handles inbox management, relationship tracking, and goal monitoring at a fraction of the cost of human support. You can test what delegation actually feels like before committing to a larger hire.