TikTok Shop Contribution Margin Calculator
Most brands track GMV. Smart brands track contribution margin. Enter your numbers below to see your real per-unit profitability on TikTok Shop — after every variable cost is accounted for.
Revenue
Product Costs
Platform & Fees
Samples & Returns
Ad SpendOptional
Contribution margin is the revenue remaining after subtracting all variable costs directly tied to a sale. It tells you whether each unit sold is making or losing money — the single most important metric for TikTok Shop profitability.
Selling Price
Your retail price on TikTok Shop before any deductions.
COGS + Shipping
Cost of goods sold plus your per-unit shipping expense.
Platform Fee
TikTok Shop's commission on every sale (typically 6-8%).
Affiliate Commission
What you pay creators per sale (typically 15-25%).
Samples & Returns
Amortised sample costs and estimated return rate impact.
Every cost that changes with each sale is a variable cost. Our calculator captures them all — including the ones most brands forget.
Revenue − COGS = "Profit"
- Ignores 6% TikTok platform fee
- Ignores 15-25% affiliate commission
- Ignores sample, shipping, & return costs
- Leads to negative margin at scale
Revenue − All Variable Costs = True Margin
- COGS + shipping + payment processing
- Platform fee + affiliate commission
- Amortised sample costs + return rate
- Ad spend, break-even & annual projections
Based on data from 500+ TikTok Shop brands we've analysed, here's what healthy margins look like across categories.
Contribution margin is the revenue remaining after subtracting all variable costs directly tied to a sale — including COGS, TikTok's platform fee (typically 6%), affiliate commissions (15-25%), shipping, payment processing, amortised sample costs, and return costs. It tells you whether each unit sold is making or losing money before fixed costs and ad spend.
A healthy contribution margin for TikTok Shop is 15-30% after all variable costs. Beauty and supplements brands often achieve 20-30% margins, while fashion brands typically see 10-20% due to higher return rates. If your margin is below 15%, you may struggle to profitably scale with paid ads.
TikTok Shop charges a platform commission of 6% for most categories (up to 8% for some). Additionally, you'll pay affiliate commissions to creators (typically 15-25%), payment processing fees (~2.9%), and should account for return costs and sample costs sent to creators. Our calculator factors in all of these.
Divide your monthly fixed costs (primarily ad spend) by your per-unit contribution margin. For example, if your margin is $8 per unit and you spend $3,000/month on ads, you need 375 units to break even. Our calculator does this automatically in the break-even analysis section.
The ROAS you need depends on your contribution margin percentage. If your per-unit margin is 25%, you need a minimum ROAS of 4x to break even on ad spend. Most profitable TikTok Shop brands target 4-6x ROAS. Use our calculator to model the exact ROAS threshold for your specific cost structure.
Ad spend is a semi-variable cost that should be tracked separately from per-unit contribution margin but included in total profitability. Our calculator shows both: contribution margin per unit (before ad spend) and net profit (after ad spend), giving you a complete picture of your unit economics.
TikTok Shop Contribution Margin Explained
Deep dive into how contribution margin works on TikTok Shop and why it matters more than GMV.
The Real Economics of TikTok Shop
What no agency tells you about the true costs and profitability of selling on TikTok Shop.
Commission Benchmarks by Category
2026 data on what commission rates top brands are paying across every TikTok Shop category.
Commission Optimization
How to protect margin without losing creators — the balancing act every brand faces.
Book a free strategy call and we'll model your full TikTok Shop unit economics — including category-specific benchmarks, commission recommendations, and a custom scaling roadmap.