Are you paying for a full-time hire… when you only need 30% of a role?
If you’re trying to decide whether to hire internally or outsource, the agency vs in-house marketing cost calculator gives you a clean, apples-to-apples estimate.
Enter salaries for the senior roles you think you need, dial the percentage of time you actually need them, and compare that “in-house equivalent” monthly cost to an agency retainer—without building a spreadsheet jungle.
Stop Asking “Should We Hire or Hire an Agency?”
Most teams treat this like a culture question. Or a trust question. Or a “who do we like more” question.
The wrong metric is headcount. The right question is: How much senior time do we truly need—and what does that cost per month once you include the real overhead?
Because the lever isn’t “agency vs in-house.” The levers are:
Time needed (%) (rarely 100%)
Burden + overhead (benefits, payroll, management time)
Scope clarity (what outputs you need monthly)
It’s not guesswork. It’s math that makes sense.
Why Use This Calculator
See the True Monthly Cost
Convert annual salaries into a realistic monthly “in-house equivalent” based on actual time needed.Find Your Break-Even Retainer
Know the monthly agency retainer that matches your internal cost—so you can negotiate and scope with confidence.Avoid the Hidden Overhead Trap
Benefits, management time, recruiting, tools… the stuff that doesn’t show up in the salary number still counts.
What You'll Need to Use This Calculator
To get the most accurate estimate, grab a few quick numbers (or use reasonable guesses—we designed it for that):
Annual salary estimates for the senior roles you’d hire (even ranges are fine).
Percent of time needed for each role (e.g., 25%, 50%, 75%).
Benefits/payroll burden estimate (if you’re unsure, 20–35% is common).
Any fixed costs you want to include (tools/software, recruiting/onboarding).
Agency retainer you’re considering (plus any setup fee if applicable).
If you’re not sure what to count or how to scope the roles, reach out—we can help you define a realistic “time needed” model without overbuilding.
How to Use This Calculator
You don’t need perfect data to get a useful estimate. Just follow the prompts below:
Add the roles you’re considering
Enter salary for each senior role (up to three) and give it a label (optional).Set “time needed” for each role
Use the % slider to reflect reality (most teams don’t need 100% of senior talent monthly).Include burden + overhead
Add benefits/payroll burden and (optionally) management overhead and fixed costs like tools and recruiting.Enter the agency retainer
Add the monthly retainer and any one-time setup fee. The calculator can amortize setup over a chosen number of months.Review your break-even number and grade
Use the break-even retainer as your anchor, then decide based on speed, scope, and accountability.
Don’t worry about being exact. This isn’t accounting—it’s strategy.
How It Works (What Goes Into the Math)
Step 1: Convert salary into “time-needed” cost
We multiply each role’s salary by your time-needed percentage so you’re not paying full-time math for part-time need.
Step 2: Add real employment burden
We apply benefits/payroll burden so you’re not comparing a loaded agency number to an unloaded salary number.
Step 3: Add overhead and fixed costs (optional)
Management overhead and fixed costs (tools, recruiting) can be included to reflect the real cost of running in-house.
Step 4: Compare to agency pricing
We add your retainer plus any setup fee (spread across your chosen amortization period) to get an “all-in” monthly agency number.
Step 5: Grade the gap
We grade the agency cost vs the in-house equivalent so you know if it’s cheaper, comparable, or carrying a premium.
Agency vs. In-House Cost Comparison Calculator
Plug in the salary for the senior people you *think* you need, then dial the % of their time you actually need. We’ll convert that into an estimated monthly “in-house equivalent” cost and compare it to an agency retainer.
1) Your In-House “Time Needed” Model
Roles (add up to 3)
2) Extra In-House Costs (optional)
3) Agency Comparison
Results
Live calculationEffective rates (sanity check)
Grade & guidance
Results Explainer (Grade bands A–F + advice)
Grade A (Agency ≤ 85% of in-house): Agency is materially cheaper. Confirm scope + deliverables and move fast.
Grade B (86%–100%): Agency is slightly cheaper. Good fit if you want speed and breadth without hiring drag.
Grade C (101%–120%): Comparable. Use the break-even retainer as your anchor—decision comes down to execution and management load.
Grade D (121%–145%): Agency is noticeably higher. Only worth it if you’re getting leverage (multiple skills, output volume, accountability).
Grade F (>145%): Agency is far higher. Tighten scope, demand clear deliverables, or rethink the model.
Cost Decisions Fall Apart Without Infrastructure
“Agency vs in-house” gets messy when the real system isn’t defined—roles overlap, priorities shift, and nobody owns the outcome. The best cost decision is the one tied to clear infrastructure:
Web Presence (being found)
Reputation Layer (being trusted)
Conversion Layer (turning visits into leads)
CRM & Data Layer (tracking and follow-up)
Automation Layer (speed and consistency)
Insights Layer (knowing what’s working)
What Impacts Agency vs In-House Cost the Most?
Senior time is lumpy: You usually need strategy in bursts, not 40 hours every week.
Hiring drag is real: Recruiting, onboarding, and ramp time inflate “cheap salary” assumptions.
Management load compounds: In-house isn’t just salary—it’s meetings, approvals, context, and process.
Scope creep is the silent killer: If outputs aren’t defined, both models get expensive fast.
Speed-to-execution changes ROI: Faster launches and faster iteration often beat cheaper hourly math.
Real Example
“A 12-person service business assumed they needed a full-time marketing lead at $140K. After mapping the work, they realized they only needed ~40% senior strategy, plus a small monthly execution lane. Their ‘in-house equivalent’ cost came out to about $6.8K/month after burden and overhead—so they used the break-even retainer to negotiate a tighter agency scope and avoided a hire they couldn’t fully utilize.”
Your Next Step Depends on What the Numbers Reveal
If your in-house equivalent is high, it’s usually a sign you need a clearer system: defined outputs, measurable goals, and a real workflow that doesn’t rely on heroics. If the agency number is high, it’s often scope ambiguity or missing infrastructure driving inefficiency.
This calculator is one of many free tools inside our Tools Hub. Explore our Builder’s Blocks framework. Run a free Website Audit (SEO Checker).
Frequently Asked Questions
What should I use for benefits/payroll burden?
If you don’t know your exact number, use a conservative estimate like 25%. Many businesses land between 20–35% depending on benefits and payroll costs.
How do I estimate “time needed” for a senior role?
Start with what outputs you need monthly (strategy, reporting, campaign direction, approvals). Then ask: would this truly fill someone’s week—or is it more like 10–20 hours per month?
Does agency cost include tools and software?
Sometimes. Many retainers bundle tools; some don’t. That’s why the calculator lets you optionally add tools to the in-house model—so you can match your reality.
Is cheaper always better?
No. Cost is only one side. Speed, accountability, breadth of skill sets, and consistent execution matter just as much.
Can I compare multiple agency options?
Yes—run the calculator again with different retainers and setup fees. Your break-even retainer stays the anchor.
Services Connected to This Calculator
This calculator is part of a larger content and service ecosystem. Depending on your results, your next best step might involve:
Sales Funnel Review
To fully audit and optimize your sales funnel across traffic, conversion, follow-up, and ROI levers.PartnerCRM
For CRM setup, lead tracking, and sales process improvementsGrowthPath
If your nurture systems are weak or nonexistentWebInsights
To track what’s really working on your siteLeadLift
If your traffic and lead volume are underperforming
This isn’t just about websites.
It’s about whether your business is built to grow.
