The $100K Marketing Budget: Where to Spend When You Can't Waste a Dollar

Practical channel allocation for capital-constrained companies with $500K-$3M ARR

TL;DR

The Problem: You have $100K for marketing this year. Spend it wrong and you've burned 6-12 months of runway proving nothing. Every dollar needs to work.

The Solution: 70% on one proven channel. 20% validating one new channel. 10% on foundation (tools, basic content). Cut ruthlessly every 90 days based on actual CAC and retention data.

The Impact: Know within 90 days if your money is generating traction. Clear kill/continue decisions every quarter. No budget wasted on "brand awareness" or channels that can't prove ROI.

Implementation: Month-by-month spend allocation with specific KPIs and decision triggers for each channel.

Why Most $100K Budgets Get Wasted

Capital-constrained companies spread their budget across 6 channels and prove nothing about any of them.

You've got $100K for the year. Your advisor says "diversify your channels—don't put all your eggs in one basket." So you allocate $1,500/month to LinkedIn ads, $1,000/month to Google Search, $2,000/month to content, $1,500/month to a part-time contractor, and $1,000/month to tools.

Six months later: You have data on everything and clarity on nothing. LinkedIn generated 12 leads at $750 each. Google got 8 at $900 each. Content produced 47 blog posts that drove 4 form fills. None of the channels have enough volume to know if they actually work.

Now you're $50K in with no clear winner and no idea what to do next. Double down? Cut it all? Try something new? You're guessing.

The brutal reality: With $100K/year, you can afford to prove ONE channel works, maybe validate a second. That's it. Spreading thin guarantees you'll learn nothing actionable before your cash runs out.

The 70-20-10 Capital-Efficient Framework

Concentrate fire. Prove one thing. Then expand.

70%: Your Proven Channel ($70K/year = $5,800/month)

What it is: The one channel that's already shown early signal—even if it's not scalable yet

How to pick it: Where did your last 10 customers actually come from? That's your 70%.

Allocation:

  • If it's founder-led outbound: $3K/month SDR or LinkedIn automation tool + $2K/month founder time opportunity cost + $800/month tools
  • If it's paid search: $4,500/month ad spend + $1,000/month landing page optimization + $300/month tools
  • If it's content/SEO: $3,500/month writer + $1,500/month distribution + $800/month SEO tools
  • If it's partner-led: $4,000/month partnerships person + $1,500/month partner enablement + $300/month CRM

Success metric: CAC under $2,000 and 30-day retention above 40% within 90 days

Kill trigger: If CAC is still above $3,000 after 90 days with 30+ customers acquired, kill it and move the budget

20%: One New Channel Validation ($20K/year = $1,650/month)

What it is: Testing the second-best hypothesis for where your customers might be

How to pick it: Ask your 70% channel customers "Where else do you hang out professionally?" Test that.

Allocation:

  • Month 1-2: $1,200/month ad spend + $450/month creative/setup
  • Month 3: Evaluate. CAC under $3,000 and leads converting at 10%+? Continue. If not, kill it and test something else.
  • Months 4-12: If it's working, maintain $1,650/month. If it died, try a different channel with the same budget.

Success metric: Prove it can generate leads under $3,000 CAC by Month 3

Kill trigger: If no meaningful leads (<10) or CAC above $4,000 by end of Month 3, shut it down immediately

10%: Foundation ($10K/year = $850/month)

What it is: Minimum viable tools and content to not look incompetent

Allocation:

  • $200/month: CRM (HubSpot Starter or Pipedrive)
  • $150/month: Email tool (Customer.io or Loops)
  • $100/month: Analytics (basic GA4 + Amplitude free tier)
  • $400/month: One freelance writer for foundational content (case study, comparison pages, FAQ)

Success metric: Prospects don't bounce because your site looks empty or broken

Don't allocate here: Brand design, rebranding, video production, webinars, events, swag, brand awareness campaigns

The math: $70K focused on one channel is enough to run real tests. $20K is enough to validate if a second channel has legs. $10K keeps the basics running. That's your entire $100K—ruthlessly focused.

How to Pick Your 70% Channel

Don't guess. Follow the signal you already have.

If Your Last 10 Customers Came From... Your 70% Channel Is... Monthly Budget Breakdown
Founder direct outreach on LinkedIn Scaled LinkedIn outbound $3K SDR/VA + $1,500 LinkedIn automation + $800 enrichment tools + $500 founder time
People searching "[problem] solution" on Google Google Search Ads $4,500 ad spend + $1,000 landing page testing + $300 tools
Your content/blog posts SEO content engine $3,500 experienced writer + $1,500 link building/distribution + $800 SEO tools
Partner/integration referrals Partner program $4,000 partnerships lead + $1,500 co-marketing/enablement + $300 partnership CRM
Community (Slack, Discord, Reddit) Community-led growth $4,000 community manager + $1,200 sponsorships + $600 tools
Customer referrals Referral program $3,000 referral incentives + $2,000 program management + $800 referral software

Critical rule: If your last 10 customers came from 6 different places with no clear pattern, you don't have a 70% channel yet. Spend $0 on paid marketing and spend 100% of your time talking to customers to figure out the pattern first.

90-Day Decision Framework

Evaluate ruthlessly every quarter. Kill what's not working. Double down on what is.

End of Q1 (Month 3): Initial Signal Check

Your 70% Channel:
  • Acquired 20+ customers? Continue current spend.
  • Acquired 10-19 customers with CAC under $2,500? Continue, add $1K/month from 20% budget.
  • Acquired <10 customers or CAC above $3,500? Cut 50% of spend immediately. Diagnose what's broken.
Your 20% Test Channel:
  • Generated 15+ qualified leads with 10%+ conversion? Keep testing, increase to $2K/month.
  • Generated 5-14 leads? Give it one more month at current spend, then decide.
  • Generated <5 leads or leads not converting? Kill it. Test something new.

End of Q2 (Month 6): Scale or Pivot

Your 70% Channel:
  • Acquired 50+ customers total with improving CAC? Increase to $8K/month (take from 20% if needed).
  • Acquired 25-49 customers, CAC flat? Maintain current spend. Optimize conversion.
  • Acquired <25 customers after 6 months? This isn't your channel. Cut it entirely. Promote your 20% test to 70%.
Your 20% Test Channel (if still running):
  • Proven CAC under $2,500 with 20+ customers? Promote to 50% budget split with original channel.
  • CAC $2,500-$4,000 with 10-19 customers? Keep testing at current level.
  • Still not producing? Kill it. You've tested enough.

End of Q3 (Month 9): Efficiency Check

By month 9, you should have 75+ total customers and clear CAC data. Decision point:

  • If you have ONE channel with CAC under $2,000: Congratulations. Put 90% of your budget there. Kill everything else.
  • If you have TWO channels both under $2,500 CAC: Split 60/30/10 (60% on best, 30% on second, 10% on foundation).
  • If NO channels have CAC under $3,000: You're spending wrong. Shut down all paid marketing. Go back to founder-led sales for 90 days.

What not to do: "Let's give it one more quarter to see if it improves." If a channel hasn't proven itself in 6 months with focused budget, it's not going to magically work in month 9. Cut it.

What to Cut When Money Gets Tight

First things to kill if you need to preserve cash or CAC isn't working.

Cut First Why Cash Saved
Brand awareness campaigns Can't track ROI, doesn't generate pipeline $2-5K/month
Video production High cost, unclear conversion impact $3-8K/project
Events/conferences (as sponsor) Expensive, hard to attribute, long sales cycles $5-15K/event
PR/media relations agency No direct pipeline, expensive retainer $3-6K/month
Marketing automation platforms Overkill for <100 customers, use simpler tools $500-2K/month
Display/banner ads Low intent, expensive, hard to convert B2B $2-4K/month

Last things to cut: Your proven channel spend, basic CRM/email tools, case study/comparison content. These directly impact your ability to acquire and convert customers.

Real Budget Example: $100K Over 12 Months

B2B SaaS company, $1.2M ARR, $15K ACV, 6-month sales cycle. Last 10 customers came from LinkedIn outbound + Google Search.

Months 1-3: Testing Phase

  • $5,500/month on LinkedIn outbound (70%): $3K SDR, $1,500 LinkedIn Sales Nav + automation, $800 ZoomInfo/Apollo, $200 founder time
  • $1,600/month on Google Search Ads (20%): $1,200 ad spend, $400 landing page optimization
  • $850/month foundation (10%): $300 HubSpot, $150 Customer.io, $400 freelance writer for case studies

Total: $7,950/month × 3 = $23,850

Q1 Results: LinkedIn generated 18 customers at $1,850 CAC. Google generated 4 at $2,100 CAC.

Months 4-6: Double Down Phase

  • $7,000/month on LinkedIn (increased from 70%): Added second SDR ($3K), kept tools, added $1K for better targeting
  • $2,000/month on Google (increased from 20%): $1,500 ad spend, $500 conversion optimization
  • $850/month foundation (maintained): Same tools, added competitor comparison content

Total: $9,850/month × 3 = $29,550

Q2 Results: LinkedIn generated 32 customers at $1,650 CAC. Google generated 9 at $1,900 CAC.

Months 7-12: Scale What Works

  • $8,500/month on LinkedIn (primary engine): 2 SDRs + manager, expanded targeting, better tools
  • $2,500/month on Google (validated second channel): Increased ad spend to $2K, ongoing optimization
  • $900/month foundation: Same stack, added basic webinar for late-stage conversion

Total: $11,900/month × 6 = $71,400

Q3-Q4 Results: LinkedIn generated 68 customers at $1,550 CAC. Google generated 22 at $1,800 CAC.

Year-End Results

  • Total spent: $124,800 (went over budget by $24K because channels were working—raised small bridge)
  • Total customers acquired: 153 customers
  • Blended CAC: $1,650
  • Proven channels: 2 (LinkedIn outbound + Google Search)
  • Channels killed: 1 (tested Reddit ads in Month 4, killed after $4,800 spend generated 2 unconverted leads)
  • Key learning: Concentrated spend on LinkedIn proved it could scale. Now comfortable raising Series A to put $500K into it.

5 Ways Founders Waste Their $100K

Mistake 1: Hiring a Full-Time Marketer Too Early

The trap: "We need a marketing hire to run all this." Spend $80K on salary + benefits, leaving $20K for actual programs.

The reality: A marketer with no budget can't prove anything. They'll spend 6 months "building strategy" while you burn cash.

What to do instead: Spend $100K on programs, use fractional/advisor support for 5-10 hours/month ($2-3K). Hire full-time only when you have $200K+ budget.

Mistake 2: Website Redesign Before Channel Validation

The trap: "Our website looks old. Let's spend $30K on redesign before we start marketing."

The reality: Your website conversion rate doesn't matter if you have no traffic. Spend $2K on basic cleanup, put the rest into channels.

What to do instead: Ship a decent-looking site in 2 weeks. Redesign only after you're driving 1,000+ visitors/month and have conversion data.

Mistake 3: Building Content Before Knowing What Converts

The trap: "Let's create 50 blog posts and wait for SEO to kick in." Spend $25K on content with zero short-term pipeline.

The reality: SEO takes 6-12 months. You'll run out of cash before it pays off.

What to do instead: Spend 80% on channels that work this quarter. Invest 20% in content only after you know what problems/keywords actually convert.

Mistake 4: Testing 5 Channels at $1K/Month Each

The trap: "Let's try everything: LinkedIn, Google, Facebook, Reddit, Twitter ads." Spread $5K across all of them.

The reality: $1K/month isn't enough to learn anything. You'll get 10-20 clicks per channel with no conclusions.

What to do instead: Pick the two most likely channels. Give them real budgets ($4K and $2K). Kill the loser after 60 days.

Mistake 5: Keeping Bad Channels Running "To Get More Data"

The trap: Month 4: "LinkedIn isn't working yet but let's give it 2 more months." By month 6, you've spent $30K proving it doesn't work.

The reality: If a channel hasn't shown promise by month 3, it's not suddenly going to work in month 6.

What to do instead: Set kill triggers up front. CAC above $4K after 90 days? Cut immediately. Don't throw good money after bad.

Need Help Allocating Your Budget?

If you're sitting on a limited budget and can't afford to waste it testing the wrong channels, let's talk.

We help capital-constrained companies build focused channel strategies, set proper kill triggers, and make ruthless quarterly decisions based on actual CAC data.

Stop spreading thin. Start concentrating fire on what actually works.

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