What should my CAC target be for a marketplace startups?

Dual-sided: buyer CAC $20 $80; seller/supplier CAC $50 $200 (higher because supply is the scarce side). The LTV:CAC rule: Take rate economics: if you take 15% on $500 avg transaction, GMV CAC = transaction value × take rate / repeat orders. $500 × 15% × 4 transactions/year = $300 LTV → $60 $100 CAC is viable.

Which platform works best for marketplace startups ads?

Supply side: LinkedIn + Google Search. Demand side: Meta + TikTok + Google Shopping (depending on category)

Guide

StartupPerformance marketingVideo adsPaid acquisition

Video Ads for Marketplace Startups: [2026] Performance Guide

If you're running a marketplace startups, paid acquisition looks completely different to other startup types. Here's the real data on CAC, which platforms work at which stage, and the one mistake that burns most marketplace startups ad budgets.

By the FluxNote Editorial Team · Last updated: March 18, 2026

Video Ads for Marketplace Startups: [2026] Performance Guide visual guide

Unit Economics You Need to Know Before Spending

Feature	Details
Average CAC via paid	Dual-sided: buyer CAC $20 $80; seller/supplier CAC $50 $200 (higher because supply is the scarce side)
LTV	CAC target: Take rate economics: if you take 15% on $500 avg transaction, GMV CAC = transaction value × take rate / repeat orders. $500 × 15% × 4 transactions/year = $300 LTV → $60 $100 CAC is viable.
Stage to start	Post-launch, need to solve both supply and demand sides simultaneously

Platform & Format Strategy

Feature	Details
Best platform	Supply side: LinkedIn + Google Search
Demand side	Meta + TikTok + Google Shopping (depending on category)
Best ad format	For supply: 'Earn with us' format showing income potential (Income Calculator)
For demand	Product Showcase or social proof
Channel order	Supply first via LinkedIn/Google; then demand via Meta/TikTok once supply liquidity is proven; then cross-side network effects take over
Budget at stage	Seed: split budget 60/40 supply/demand (supply is harder to acquire)
Growth	shift to 30/70 once supply is healthy.

The Core Creative Challenge

Marketplace ads need two entirely different creative strategies, supply-side ads are B2B recruitment ('earn $X on our platform'), demand-side ads are B2C commerce ('find X here'). Most startups mistakenly blend them.

What Separates Winners From Wasted Spend

Income specificity on the supply side. 'Earn $1,200/month on weekends' outperforms 'join our platform'. Real provider income data (even from 5 early suppliers) transforms conversion rates.

The FluxNote Workflow for This Vertical

Create two video series in parallel

1Provider testimonials showing income earned, use Income Calculator format.
2Buyer product/service demos showing value, use Product Showcase. Keep these 100% separate in ad accounts.

The Mistake That Burns Budgets

Trying to grow both sides simultaneously with one ad budget, pick the scarce side (usually supply) and over-invest there until you have enough to guarantee buyer value, then shift budget to demand.

Pro Tips

Target CAC: Dual-sided: buyer CAC $20 $80; seller/supplier CAC $50 $200 (higher because supply is the scarce side)
Channel order: Supply first via LinkedIn/Google; then demand via Meta/TikTok once supply liquidity is proven; then cross-side network effects take over
Income specificity on the supply side. 'Earn $1,200/month on weekends' outperforms 'join our platform'. Real provider income data (even from 5 early s
Avoid: Trying to grow both sides simultaneously with one ad budget, pick the scarce side (usually supply) and over-invest there until you have enough to gua

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