Launched this week
EcomCalcTools
500+ free calculators for Amazon, TikTok, Stripe & Shopify
1 follower
500+ free calculators for Amazon, TikTok, Stripe & Shopify
1 follower
Free calculators for Amazon FBA, Shopify, TikTok Shop, Stripe & more. 500+ tools for ecommerce sellers.



Hey Product Hunt! π
I built EcomCalcTools because I kept seeing ecommerce sellers
lose money on hidden fees they never calculated upfront.
The problem: Amazon FBA fees, Stripe charges, TikTok Shop
commissions, Etsy vs eBay costs β they're all buried in
different help pages, and doing the math manually wastes hours.
So I built free calculators covering:
π Ecommerce β FBA profit, Shopify margin, Etsy/eBay fees
π Marketing β ROAS, CAC, CLV, Email ROI, ACOS
π³ Payment β Stripe, PayPal, VAT, Sales Tax
π» SaaS β MRR, Churn, Burn Rate, LTV
π΅ TikTok Shop β Seller fees, Local delivery VAT
All free. No sign-up. Updated with 2026 rates.
Would love your feedback β especially if there's a calculator
you wish existed but don't see yet! π
What are the Amazon FBA fees in 2026?
Most beginners quote "around 15%" for Amazon FBA fees. That's dangerously incomplete. Here's the real breakdown for 2026:
The actual numbers on a $40 sale:
Fee Type
Rate
Example
Referral Fee
6β17%
$2.40β$6.80
Closing Fee
$0.30β$1.80
$0.30
FBA Fulfillment
$3.22β$52.38/unit
$4.36β$7.24
All-in cost: 17β40% of sale price, depending on category and weight.
Q4 storage spike nobody warns you about: OctoberβDecember, storage fees jump from $0.78 to $2.40/cubic foot/month β that's 3Γ the normal rate.
Most guides calculate fees based on "standard size" but forget weight tier. A 2-lb product costs 65% more in fulfillment than a 10oz one in the same category.
Net = Sale Price β Referral Fee β Closing Fee β Fulfillment Fee β Storage
Full 2026 rate tables and free calculator: https://ecomcalctools.com/blog/amazon-fba-fees-2026/
TikTok Shop Fee Calculator: Commission Rates by Category and Profit Margin in 2026
TikTok Shop Fee Structure
Total Fees = Commission + Transaction Fee
Net Profit = Sale Price β Total Fees β Product Cost β Shipping to Customer
Commission Rates by Category
Category
Commission
Transaction Fee
All-in
Fashion & Apparel
8%
1β2%
9β10%
Electronics
5%
1β2%
6β7%
Beauty
6%
1β2%
7β8%
Home & Living
5%
1β2%
6β7%
Example: $50 Electronics Sale
Commission (5%): $2.50
Transaction (1.5%): $0.75
βββββββββββββββββββββββββββββ
Total Fees: $3.25
Net (excl. COGS): $46.75
Effective Rate: 6.5%
Comparison: TikTok vs Amazon vs eBay
Platform
Est. All-in Fees
Notes
TikTok Shop
3β10%
Best for Fashion/Electronics
Amazon FBA
15β40%
Higher but passive sales
eBay
16%+
High fees, large audience
Etsy
9.5%+
Good for handmade/creative
Tools
TikTok Shop Fee Calculator
Profit Margin Calculator
Full guide: https://ecomcalctools.com/blog/tiktok-shop-fees-2026/